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@ -0,0 +1,27 @@
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commit 3bde240a2acc85e63e2f7813330713dd9b59386e
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Author: Nathan Scott <nathans@redhat.com>
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Date: Wed Mar 27 14:51:28 2024 +1100
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pmproxy: disable Redis protocol proxying by default
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If a redis-server has been locked down in terms of connections,
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we want to prevent pmproxy from being allowed to send arbitrary
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RESP commands to it.
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This protocol proxying doesn't affect PCP functionality at all,
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its more of a developer/sysadmin convenience when Redis used in
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cluster mode (relatively uncommon compared to localhost mode).
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diff --git a/src/pmproxy/pmproxy.conf b/src/pmproxy/pmproxy.conf
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index e54891792e..4cbc1c96af 100644
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--- a/src/pmproxy/pmproxy.conf
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+++ b/src/pmproxy/pmproxy.conf
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@@ -29,7 +29,7 @@ pcp.enabled = true
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http.enabled = true
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# support Redis protocol proxying
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-redis.enabled = true
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+redis.enabled = false
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# support SSL/TLS protocol wrapping
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secure.enabled = true
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@ -0,0 +1,320 @@
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diff -Naurp pcp-5.3.7.orig/qa/src/test_pcp_sockets.python pcp-5.3.7/qa/src/test_pcp_sockets.python
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--- pcp-5.3.7.orig/qa/src/test_pcp_sockets.python 1970-01-01 10:00:00.000000000 +1000
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+++ pcp-5.3.7/qa/src/test_pcp_sockets.python 2024-09-09 13:47:06.848083320 +1000
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@@ -0,0 +1,23 @@
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+import socket
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+import cpmapi as api
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+from pcp import pmapi
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+
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+address = 'localhost'
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+port = 44321
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+
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+c = []
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+for i in range(0, 1234):
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+ print('context', i)
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+ ctx = pmapi.pmContext(api.PM_CONTEXT_HOST, "local:")
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+ print('created', i)
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+ c.append(ctx)
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+
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+s = []
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+for i in range(0, 1234):
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+ sock = socket.socket()
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+ print('socket', i)
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+ sock.connect((address, port))
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+ print('connect', i)
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+ sock.send(b"abba\r") # -- gives a too-large PDU
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+ print('send', i)
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+ # s.append(sock) # -- exercise pduread: timeout
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diff -Naurp pcp-5.3.7.orig/src/libpcp/src/pdu.c pcp-5.3.7/src/libpcp/src/pdu.c
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--- pcp-5.3.7.orig/src/libpcp/src/pdu.c 2022-04-05 09:05:43.000000000 +1000
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+++ pcp-5.3.7/src/libpcp/src/pdu.c 2024-09-09 13:47:06.869083364 +1000
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@@ -186,10 +186,7 @@ pduread(int fd, char *buf, int len, int
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* Need all parts of the PDU to be received by dead_hand
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* This enforces a low overall timeout for the whole PDU
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* (as opposed to just a timeout for individual calls to
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- * recv). A more invasive alternative (better) approach
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- * would see all I/O performed in the main event loop,
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- * and I/O routines transformed to continuation-passing
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- * style.
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+ * recv).
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*/
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gettimeofday(&dead_hand, NULL);
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dead_hand.tv_sec += wait.tv_sec;
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@@ -499,9 +496,10 @@ PM_FAULT_RETURN(PM_ERR_TIMEOUT);
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if (len == -1) {
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if (! __pmSocketClosed()) {
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char errmsg[PM_MAXERRMSGLEN];
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- pmNotifyErr(LOG_ERR, "%s: fd=%d hdr read: len=%d: %s",
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- "__pmGetPDU", fd, len,
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- pmErrStr_r(-oserror(), errmsg, sizeof(errmsg)));
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+ if (pmDebugOptions.pdu)
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+ pmNotifyErr(LOG_ERR, "%s: fd=%d hdr read: len=%d: %s",
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+ "__pmGetPDU", fd, len,
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+ pmErrStr_r(-oserror(), errmsg, sizeof(errmsg)));
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}
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}
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else if (len >= (int)sizeof(php->len)) {
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@@ -520,15 +518,17 @@ PM_FAULT_RETURN(PM_ERR_TIMEOUT);
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}
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else if (len < 0) {
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char errmsg[PM_MAXERRMSGLEN];
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- pmNotifyErr(LOG_ERR, "%s: fd=%d hdr read: len=%d: %s",
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- "__pmGetPDU", fd, len,
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- pmErrStr_r(len, errmsg, sizeof(errmsg)));
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+ if (pmDebugOptions.pdu)
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+ pmNotifyErr(LOG_ERR, "%s: fd=%d hdr read: len=%d: %s",
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+ "__pmGetPDU", fd, len,
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+ pmErrStr_r(len, errmsg, sizeof(errmsg)));
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__pmUnpinPDUBuf(pdubuf);
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return PM_ERR_IPC;
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}
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else if (len > 0) {
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- pmNotifyErr(LOG_ERR, "%s: fd=%d hdr read: bad len=%d",
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- "__pmGetPDU", fd, len);
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+ if (pmDebugOptions.pdu)
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+ pmNotifyErr(LOG_ERR, "%s: fd=%d hdr read: bad len=%d",
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+ "__pmGetPDU", fd, len);
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__pmUnpinPDUBuf(pdubuf);
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return PM_ERR_IPC;
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}
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@@ -547,8 +547,9 @@ check_read_len:
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* PDU length indicates insufficient bytes for a PDU header
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* ... looks like DOS attack like PV 935490
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*/
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- pmNotifyErr(LOG_ERR, "%s: fd=%d illegal PDU len=%d in hdr",
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- "__pmGetPDU", fd, php->len);
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+ if (pmDebugOptions.pdu)
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+ pmNotifyErr(LOG_ERR, "%s: fd=%d illegal PDU len=%d in hdr",
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+ "__pmGetPDU", fd, php->len);
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__pmUnpinPDUBuf(pdubuf);
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return PM_ERR_IPC;
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}
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@@ -559,16 +560,18 @@ check_read_len:
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* (note, pmcd and pmdas have to be able to _send_ large PDUs,
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* e.g. for a pmResult or instance domain enquiry)
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*/
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- if (len < (int)(sizeof(php->len) + sizeof(php->type)))
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- /* PDU too short to provide a valid type */
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- pmNotifyErr(LOG_ERR, "%s: fd=%d bad PDU len=%d in hdr "
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- "exceeds maximum client PDU size (%d)",
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- "__pmGetPDU", fd, php->len, ceiling);
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- else
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- pmNotifyErr(LOG_ERR, "%s: fd=%d type=0x%x bad PDU len=%d in hdr "
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- "exceeds maximum client PDU size (%d)",
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- "__pmGetPDU", fd, (unsigned)ntohl(php->type),
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- php->len, ceiling);
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+ if (pmDebugOptions.pdu) {
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+ if (len < (int)(sizeof(php->len) + sizeof(php->type)))
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+ /* PDU too short to provide a valid type */
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+ pmNotifyErr(LOG_ERR, "%s: fd=%d bad PDU len=%d in hdr"
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+ " exceeds maximum client PDU size (%d)",
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+ "__pmGetPDU", fd, php->len, ceiling);
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+ else
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+ pmNotifyErr(LOG_ERR, "%s: fd=%d type=0x%x bad PDU len=%d in hdr"
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+ " exceeds maximum client PDU size (%d)",
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+ "__pmGetPDU", fd, (unsigned)ntohl(php->type),
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+ php->len, ceiling);
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+ }
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__pmUnpinPDUBuf(pdubuf);
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return PM_ERR_TOOBIG;
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}
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@@ -608,6 +611,10 @@ check_read_len:
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__pmUnpinPDUBuf(pdubuf);
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return PM_ERR_TIMEOUT;
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}
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+ else if (!pmDebugOptions.pdu) {
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+ __pmUnpinPDUBuf(pdubuf);
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+ return PM_ERR_IPC;
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+ }
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else if (len < 0) {
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char errmsg[PM_MAXERRMSGLEN];
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pmNotifyErr(LOG_ERR, "%s: fd=%d data read: len=%d: %s",
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@@ -641,7 +648,8 @@ check_read_len:
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* PDU type is bad ... could be a possible mem leak attack like
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* https://bugzilla.redhat.com/show_bug.cgi?id=841319
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*/
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- pmNotifyErr(LOG_ERR, "%s: fd=%d illegal PDU type=%d in hdr",
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+ if (pmDebugOptions.pdu)
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+ pmNotifyErr(LOG_ERR, "%s: fd=%d illegal PDU type=%d in hdr",
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"__pmGetPDU", fd, php->type);
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__pmUnpinPDUBuf(pdubuf);
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return PM_ERR_IPC;
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diff -Naurp pcp-5.3.7.orig/src/libpcp_web/src/load.h pcp-5.3.7/src/libpcp_web/src/load.h
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--- pcp-5.3.7.orig/src/libpcp_web/src/load.h 2021-02-17 15:27:41.000000000 +1100
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+++ pcp-5.3.7/src/libpcp_web/src/load.h 2024-09-09 13:45:56.531933622 +1000
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@@ -42,8 +42,9 @@ typedef struct context {
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unsigned int setup : 1; /* context established */
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unsigned int cached : 1; /* context/source in cache */
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unsigned int garbage : 1; /* context pending removal */
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+ unsigned int inactive: 1; /* context removal deferred */
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unsigned int updated : 1; /* context labels are updated */
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- unsigned int padding : 4; /* zero-filled struct padding */
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+ unsigned int padding : 3; /* zero-filled struct padding */
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unsigned int refcount : 16; /* currently-referenced counter */
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unsigned int timeout; /* context timeout in milliseconds */
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uv_timer_t timer;
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diff -Naurp pcp-5.3.7.orig/src/libpcp_web/src/webgroup.c pcp-5.3.7/src/libpcp_web/src/webgroup.c
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--- pcp-5.3.7.orig/src/libpcp_web/src/webgroup.c 2024-09-09 13:44:34.166748200 +1000
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+++ pcp-5.3.7/src/libpcp_web/src/webgroup.c 2024-09-09 13:45:56.531933622 +1000
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@@ -134,9 +134,18 @@ webgroup_timeout_context(uv_timer_t *arg
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* is returned to zero by the caller, or background cleanup
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* finds this context and cleans it.
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*/
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- if (cp->refcount == 0 && cp->garbage == 0) {
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- cp->garbage = 1;
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- uv_timer_stop(&cp->timer);
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+ if (cp->refcount == 0) {
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+ if (cp->garbage == 0) {
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+ cp->garbage = 1;
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+ uv_timer_stop(&cp->timer);
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+ }
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+ } else {
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+ /*
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+ * Context timed out but still referenced, must wait
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+ * until the caller releases its reference (shortly)
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+ * before beginning garbage collection process.
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+ */
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+ cp->inactive = 1;
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}
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}
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@@ -298,20 +307,28 @@ webgroup_garbage_collect(struct webgroup
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dictIterator *iterator;
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dictEntry *entry;
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context_t *cp;
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- unsigned int count = 0, drops = 0;
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+ unsigned int count = 0, drops = 0, garbageset = 0, inactiveset = 0;
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if (pmDebugOptions.http || pmDebugOptions.libweb)
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- fprintf(stderr, "%s: started\n", "webgroup_garbage_collect");
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+ fprintf(stderr, "%s: started for groups %p\n",
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+ "webgroup_garbage_collect", groups);
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/* do context GC if we get the lock (else don't block here) */
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if (uv_mutex_trylock(&groups->mutex) == 0) {
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iterator = dictGetSafeIterator(groups->contexts);
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for (entry = dictNext(iterator); entry;) {
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cp = (context_t *)dictGetVal(entry);
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+ if (cp->privdata != groups)
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+ continue;
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entry = dictNext(iterator);
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- if (cp->garbage && cp->privdata == groups) {
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+ if (cp->garbage)
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+ garbageset++;
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+ if (cp->inactive && cp->refcount == 0)
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+ inactiveset++;
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+ if (cp->garbage || (cp->inactive && cp->refcount == 0)) {
|
||||
if (pmDebugOptions.http || pmDebugOptions.libweb)
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- fprintf(stderr, "GC context %u (%p)\n", cp->randomid, cp);
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+ fprintf(stderr, "GC dropping context %u (%p)\n",
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+ cp->randomid, cp);
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uv_mutex_unlock(&groups->mutex);
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webgroup_drop_context(cp, groups);
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uv_mutex_lock(&groups->mutex);
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@@ -324,7 +341,8 @@ webgroup_garbage_collect(struct webgroup
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/* if dropping the last remaining context, do cleanup */
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if (groups->active && drops == count) {
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if (pmDebugOptions.http || pmDebugOptions.libweb)
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- fprintf(stderr, "%s: freezing\n", "webgroup_garbage_collect");
|
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+ fprintf(stderr, "%s: freezing groups %p\n",
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+ "webgroup_garbage_collect", groups);
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webgroup_timers_stop(groups);
|
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}
|
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uv_mutex_unlock(&groups->mutex);
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||||
@@ -334,8 +352,10 @@ webgroup_garbage_collect(struct webgroup
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||||
mmv_set(groups->map, groups->metrics[WEBGROUP_GC_COUNT], &count);
|
||||
|
||||
if (pmDebugOptions.http || pmDebugOptions.libweb)
|
||||
- fprintf(stderr, "%s: finished [%u drops from %u entries]\n",
|
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- "webgroup_garbage_collect", drops, count);
|
||||
+ fprintf(stderr, "%s: finished [%u drops from %u entries,"
|
||||
+ " %u garbageset, %u inactiveset]\n",
|
||||
+ "webgroup_garbage_collect", drops, count,
|
||||
+ garbageset, inactiveset);
|
||||
}
|
||||
|
||||
static void
|
||||
@@ -354,7 +374,7 @@ webgroup_use_context(struct context *cp,
|
||||
int sts;
|
||||
struct webgroups *gp = (struct webgroups *)cp->privdata;
|
||||
|
||||
- if (cp->garbage == 0) {
|
||||
+ if (cp->garbage == 0 && cp->inactive == 0) {
|
||||
if (cp->setup == 0) {
|
||||
if ((sts = pmReconnectContext(cp->context)) < 0) {
|
||||
infofmt(*message, "cannot reconnect context: %s",
|
||||
@@ -424,7 +444,7 @@ webgroup_lookup_context(pmWebGroupSettin
|
||||
*status = -ENOTCONN;
|
||||
return NULL;
|
||||
}
|
||||
- if (cp->garbage == 0) {
|
||||
+ if (cp->garbage == 0 && cp->inactive == 0) {
|
||||
access.username = cp->username;
|
||||
access.password = cp->password;
|
||||
access.realm = cp->realm;
|
||||
diff -Naurp pcp-5.3.7.orig/src/pmcd/src/client.c pcp-5.3.7/src/pmcd/src/client.c
|
||||
--- pcp-5.3.7.orig/src/pmcd/src/client.c 2018-01-15 15:49:13.000000000 +1100
|
||||
+++ pcp-5.3.7/src/pmcd/src/client.c 2024-09-09 13:47:06.870083366 +1000
|
||||
@@ -74,7 +74,8 @@ NotifyEndContext(int ctx)
|
||||
ClientInfo *
|
||||
AcceptNewClient(int reqfd)
|
||||
{
|
||||
- static unsigned int seq = 0;
|
||||
+ static unsigned int seq, saved, count;
|
||||
+ static struct timeval then;
|
||||
int i, fd;
|
||||
__pmSockLen addrlen;
|
||||
struct timeval now;
|
||||
@@ -83,21 +84,30 @@ AcceptNewClient(int reqfd)
|
||||
addrlen = __pmSockAddrSize();
|
||||
fd = __pmAccept(reqfd, client[i].addr, &addrlen);
|
||||
if (fd == -1) {
|
||||
- if (neterror() == EPERM) {
|
||||
- pmNotifyErr(LOG_NOTICE, "AcceptNewClient(%d): "
|
||||
- "Permission Denied\n", reqfd);
|
||||
- }
|
||||
- else if (neterror() == ECONNABORTED) {
|
||||
+ if (neterror() == ECONNABORTED) {
|
||||
/* quietly ignore this one ... */
|
||||
;
|
||||
}
|
||||
else {
|
||||
- /*
|
||||
- * unexpected ... ignore the client (we used to kill off pmcd
|
||||
- * but that seems way too extreme)
|
||||
+ /* Permission denied or an unexpected error (e.g. EMFILE)
|
||||
+ * - rate limit the logging and make this client go away.
|
||||
*/
|
||||
- pmNotifyErr(LOG_ERR, "AcceptNewClient(%d): Unexpected error from __pmAccept: %d: %s\n",
|
||||
- reqfd, neterror(), netstrerror());
|
||||
+ pmtimevalNow(&now);
|
||||
+ if (neterror() != saved || now.tv_sec > then.tv_sec + 60) {
|
||||
+ if (neterror() == EPERM)
|
||||
+ pmNotifyErr(LOG_NOTICE, "AcceptNewClient(%d): "
|
||||
+ "Permission Denied (%d suppressed)\n",
|
||||
+ reqfd, count);
|
||||
+ else
|
||||
+ pmNotifyErr(LOG_ERR, "AcceptNewClient(%d): "
|
||||
+ "Accept error (%d suppressed): %d: %s\n",
|
||||
+ reqfd, count, neterror(), netstrerror());
|
||||
+ saved = neterror();
|
||||
+ count = 0;
|
||||
+ } else {
|
||||
+ count++;
|
||||
+ }
|
||||
+ then = now;
|
||||
}
|
||||
client[i].fd = -1;
|
||||
DeleteClient(&client[i]);
|
||||
diff -Naurp pcp-5.3.7.orig/src/pmcd/src/pmcd.c pcp-5.3.7/src/pmcd/src/pmcd.c
|
||||
--- pcp-5.3.7.orig/src/pmcd/src/pmcd.c 2021-10-13 10:48:23.000000000 +1100
|
||||
+++ pcp-5.3.7/src/pmcd/src/pmcd.c 2024-09-09 13:47:06.871083368 +1000
|
||||
@@ -685,7 +685,7 @@ HandleReadyAgents(__pmFdSet *readyFds)
|
||||
}
|
||||
|
||||
static void
|
||||
-CheckNewClient(__pmFdSet * fdset, int rfd, int family)
|
||||
+CheckNewClient(__pmFdSet *fdset, int rfd, int family)
|
||||
{
|
||||
int s, sts, accepted = 1;
|
||||
__uint32_t challenge;
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,418 @@
|
||||
diff -Naurp pcp-6.2.0.orig/qa/1518 pcp-6.2.0/qa/1518
|
||||
--- pcp-6.2.0.orig/qa/1518 1970-01-01 10:00:00.000000000 +1000
|
||||
+++ pcp-6.2.0/qa/1518 2024-09-17 10:11:45.805874610 +1000
|
||||
@@ -0,0 +1,75 @@
|
||||
+#!/bin/sh
|
||||
+# PCP QA Test No. 1518
|
||||
+# SUSE Issue A)
|
||||
+# __pmDecodeValueSet() Miscalculates Available Buffer Space
|
||||
+# Leading to a Possible Heap Corruption
|
||||
+#
|
||||
+# Copyright (c) 2024 Ken McDonell. All Rights Reserved.
|
||||
+# Copyright (c) 2024 Matthias Gerstner. All Rights Reserved.
|
||||
+#
|
||||
+
|
||||
+if [ $# -eq 0 ]
|
||||
+then
|
||||
+ seq=`basename $0`
|
||||
+ echo "QA output created by $seq"
|
||||
+else
|
||||
+ # use $seq from caller, unless not set
|
||||
+ [ -n "$seq" ] || seq=`basename $0`
|
||||
+ echo "QA output created by `basename $0` $*"
|
||||
+fi
|
||||
+
|
||||
+# get standard environment, filters and checks
|
||||
+. ./common.product
|
||||
+. ./common.filter
|
||||
+. ./common.check
|
||||
+
|
||||
+$sudo rm -rf $tmp $tmp.* $seq.full
|
||||
+
|
||||
+which nc >/dev/null 2>&1 || _notrun "no nc executable installed"
|
||||
+_check_valgrind
|
||||
+
|
||||
+_cleanup()
|
||||
+{
|
||||
+ cat pmcd.log >>$here/$seq.full
|
||||
+ cd $here
|
||||
+ $sudo rm -rf $tmp $tmp.*
|
||||
+}
|
||||
+
|
||||
+status=0 # success is the default!
|
||||
+trap "_cleanup; exit \$status" 0 1 2 3 15
|
||||
+
|
||||
+_filter()
|
||||
+{
|
||||
+ sed \
|
||||
+ -e '/^Command: /d' \
|
||||
+ # end
|
||||
+}
|
||||
+
|
||||
+mkdir $tmp || exit 1
|
||||
+cd $tmp
|
||||
+grep sampledso $PCP_PMCDCONF_PATH >pmcd.conf
|
||||
+cat pmcd.conf >>$here/$seq.full
|
||||
+port=`_find_free_port`
|
||||
+echo "port=$port" >>$here/$seq.full
|
||||
+
|
||||
+# real QA test starts here
|
||||
+valgrind $PCP_BINADM_DIR/pmcd -f -Dpdu -c ./pmcd.conf -s ./pmcd.socket -p $port >out 2>err &
|
||||
+valgrind_pid=$!
|
||||
+sleep 2
|
||||
+pmcd_pid=`$PCP_PS_PROG $PCP_PS_ALL_FLAGS | grep '[p]mcd -f -Dpdu' | $PCP_AWK_PROG '{ print $2 }'`
|
||||
+echo "pmcd_pid=$pmcd_pid" >>$here/$seq.full
|
||||
+nc -N -U ./pmcd.socket <$here/binary/decode-value-set-out-of-bound-write 2>&1 \
|
||||
+| od -c >>$here/$seq.full
|
||||
+sleep 2
|
||||
+kill -TERM $pmcd_pid
|
||||
+wait
|
||||
+
|
||||
+echo "expect error to be logged ..."
|
||||
+grep __pmDecodeValueSet pmcd.log
|
||||
+
|
||||
+echo
|
||||
+echo "and no valgrind badness ..."
|
||||
+cat out err | _filter_valgrind | _filter
|
||||
+
|
||||
+# success, all done
|
||||
+exit
|
||||
diff -Naurp pcp-6.2.0.orig/qa/1518.out pcp-6.2.0/qa/1518.out
|
||||
--- pcp-6.2.0.orig/qa/1518.out 1970-01-01 10:00:00.000000000 +1000
|
||||
+++ pcp-6.2.0/qa/1518.out 2024-09-17 10:11:45.806874611 +1000
|
||||
@@ -0,0 +1,11 @@
|
||||
+QA output created by 1518
|
||||
+expect error to be logged ...
|
||||
+__pmDecodeValueSet: PM_ERR_IPC: pmid[0] value[0] vindex=1020 (max=255)
|
||||
+
|
||||
+and no valgrind badness ...
|
||||
+Memcheck, a memory error detector
|
||||
+LEAK SUMMARY:
|
||||
+definitely lost: 0 bytes in 0 blocks
|
||||
+indirectly lost: 0 bytes in 0 blocks
|
||||
+Rerun with --leak-check=full to see details of leaked memory
|
||||
+ERROR SUMMARY: 0 errors from 0 contexts ...
|
||||
diff -Naurp pcp-6.2.0.orig/qa/group pcp-6.2.0/qa/group
|
||||
--- pcp-6.2.0.orig/qa/group 2024-02-11 23:48:09.000000000 +1100
|
||||
+++ pcp-6.2.0/qa/group 2024-09-17 10:11:45.815874621 +1000
|
||||
@@ -1951,6 +1951,7 @@ x11
|
||||
1503 pcp pidstat ps python local
|
||||
1511 pmcd local pmda.sample
|
||||
1515 pmda.denki local valgrind
|
||||
+1518 pmcd libpcp local
|
||||
1530 pmda.zfs local valgrind
|
||||
1531 pmda.zfs local valgrind
|
||||
1532 pmda.zfs local
|
||||
diff -Naurp pcp-6.2.0.orig/src/libpcp/src/endian.c pcp-6.2.0/src/libpcp/src/endian.c
|
||||
--- pcp-6.2.0.orig/src/libpcp/src/endian.c 2023-11-16 17:51:39.000000000 +1100
|
||||
+++ pcp-6.2.0/src/libpcp/src/endian.c 2024-09-17 10:11:45.820874627 +1000
|
||||
@@ -275,13 +275,17 @@ ntohEventArray(pmValueBlock * const vb,
|
||||
}
|
||||
|
||||
void
|
||||
-__ntohpmValueBlock(pmValueBlock * const vb)
|
||||
+__ntohpmValueBlock_hdr(pmValueBlock * const vb)
|
||||
{
|
||||
unsigned int *ip = (unsigned int *)vb;
|
||||
|
||||
/* Swab the first word, which contain vtype and vlen */
|
||||
*ip = ntohl(*ip);
|
||||
+}
|
||||
|
||||
+void
|
||||
+__ntohpmValueBlock_buf(pmValueBlock * const vb)
|
||||
+{
|
||||
switch (vb->vtype) {
|
||||
case PM_TYPE_U64:
|
||||
case PM_TYPE_64:
|
||||
@@ -305,6 +309,13 @@ __ntohpmValueBlock(pmValueBlock * const
|
||||
break;
|
||||
}
|
||||
}
|
||||
+
|
||||
+void
|
||||
+__ntohpmValueBlock(pmValueBlock * const vb)
|
||||
+{
|
||||
+ __ntohpmValueBlock_hdr(vb);
|
||||
+ __ntohpmValueBlock_buf(vb);
|
||||
+}
|
||||
#endif
|
||||
|
||||
#ifndef __htonpmPDUInfo
|
||||
diff -Naurp pcp-6.2.0.orig/src/libpcp/src/internal.h pcp-6.2.0/src/libpcp/src/internal.h
|
||||
--- pcp-6.2.0.orig/src/libpcp/src/internal.h 2023-11-16 17:51:39.000000000 +1100
|
||||
+++ pcp-6.2.0/src/libpcp/src/internal.h 2024-09-17 10:11:45.823874630 +1000
|
||||
@@ -60,6 +60,8 @@ extern int __pmGetDate(struct timespec *
|
||||
#define __ntohpmLabel(a) /* noop */
|
||||
#define __htonpmValueBlock(a) /* noop */
|
||||
#define __ntohpmValueBlock(a) /* noop */
|
||||
+#define __ntohpmValueBlock_hdr(a) /* noop */
|
||||
+#define __ntohpmValueBlock_buf(a) /* noop */
|
||||
#define __htonf(a) /* noop */
|
||||
#define __ntohf(a) /* noop */
|
||||
#define __htond(a) /* noop */
|
||||
@@ -90,6 +92,8 @@ extern void __htonpmLabel(pmLabel * cons
|
||||
extern void __ntohpmLabel(pmLabel * const) _PCP_HIDDEN;
|
||||
extern void __htonpmValueBlock(pmValueBlock * const) _PCP_HIDDEN;
|
||||
extern void __ntohpmValueBlock(pmValueBlock * const) _PCP_HIDDEN;
|
||||
+extern void __ntohpmValueBlock_hdr(pmValueBlock * const) _PCP_HIDDEN;
|
||||
+extern void __ntohpmValueBlock_buf(pmValueBlock * const) _PCP_HIDDEN;
|
||||
extern void __htonf(char *) _PCP_HIDDEN; /* float */
|
||||
#define __ntohf(v) __htonf(v)
|
||||
#define __htond(v) __htonll(v) /* double */
|
||||
diff -Naurp pcp-6.2.0.orig/src/libpcp/src/p_result.c pcp-6.2.0/src/libpcp/src/p_result.c
|
||||
--- pcp-6.2.0.orig/src/libpcp/src/p_result.c 2023-11-16 17:51:39.000000000 +1100
|
||||
+++ pcp-6.2.0/src/libpcp/src/p_result.c 2024-09-17 10:18:17.264314112 +1000
|
||||
@@ -323,6 +323,135 @@ __pmSendHighResResult(int fd, int from,
|
||||
return __pmSendHighResResult_ctx(NULL, fd, from, result);
|
||||
}
|
||||
|
||||
+/* Check that a network encoded event array is within a given buffer size */
|
||||
+int
|
||||
+__pmEventArrayCheck(pmValueBlock * const vb, int highres, int pmid, int value, size_t check)
|
||||
+{
|
||||
+ char *base;
|
||||
+ int r; /* records */
|
||||
+ int p; /* parameters in a record ... */
|
||||
+ int nrecords;
|
||||
+ int nparams;
|
||||
+
|
||||
+ if (highres) {
|
||||
+ pmHighResEventArray *hreap = (pmHighResEventArray *)vb;
|
||||
+ base = (char *)&hreap->ea_record[0];
|
||||
+ if (base > (char *)vb + check) {
|
||||
+ if (pmDebugOptions.pdu)
|
||||
+ fprintf(stderr, "__pmEventArrayCheck #1: PM_ERR_IPC: pmid[%d] value[%d] highres event records past end of PDU buffer\n",
|
||||
+ pmid, value);
|
||||
+ return PM_ERR_IPC;
|
||||
+ }
|
||||
+ nrecords = ntohl(hreap->ea_nrecords);
|
||||
+ }
|
||||
+ else {
|
||||
+ pmEventArray *eap = (pmEventArray *)vb;
|
||||
+ base = (char *)&eap->ea_record[0];
|
||||
+ if (base > (char *)vb + check) {
|
||||
+ if (pmDebugOptions.pdu)
|
||||
+ fprintf(stderr, "__pmEventArrayCheck #2: PM_ERR_IPC: pmid[%d] value[%d] event records past end of PDU buffer\n",
|
||||
+ pmid, value);
|
||||
+ return PM_ERR_IPC;
|
||||
+ }
|
||||
+ nrecords = ntohl(eap->ea_nrecords);
|
||||
+ }
|
||||
+
|
||||
+ /* walk packed event record array */
|
||||
+ for (r = 0; r < nrecords; r++) {
|
||||
+ unsigned int flags, type;
|
||||
+ size_t size, remaining;
|
||||
+
|
||||
+ remaining = check - (base - (char *)vb);
|
||||
+ if (highres) {
|
||||
+ pmHighResEventRecord *hrerp = (pmHighResEventRecord *)base;
|
||||
+ size = sizeof(hrerp->er_timestamp) + sizeof(hrerp->er_flags) +
|
||||
+ sizeof(hrerp->er_nparams);
|
||||
+ if (size > remaining) {
|
||||
+ if (pmDebugOptions.pdu)
|
||||
+ fprintf(stderr, "__pmEventArrayCheck #3: PM_ERR_IPC: pmid[%d] value[%d] record[%d] highres event record past end of PDU buffer\n",
|
||||
+ pmid, value, r);
|
||||
+ return PM_ERR_IPC;
|
||||
+ }
|
||||
+ nparams = ntohl(hrerp->er_nparams);
|
||||
+ flags = ntohl(hrerp->er_flags);
|
||||
+ }
|
||||
+ else {
|
||||
+ pmEventRecord *erp = (pmEventRecord *)base;
|
||||
+ size = sizeof(erp->er_timestamp) + sizeof(erp->er_flags) +
|
||||
+ sizeof(erp->er_nparams);
|
||||
+ if (size > remaining) {
|
||||
+ if (pmDebugOptions.pdu)
|
||||
+ fprintf(stderr, "__pmEventArrayCheck #4: PM_ERR_IPC: pmid[%d] value[%d] record[%d] event record past end of PDU buffer\n",
|
||||
+ pmid, value, r);
|
||||
+ return PM_ERR_IPC;
|
||||
+ }
|
||||
+ nparams = ntohl(erp->er_nparams);
|
||||
+ flags = ntohl(erp->er_flags);
|
||||
+ }
|
||||
+
|
||||
+ if (flags & PM_EVENT_FLAG_MISSED)
|
||||
+ nparams = 0;
|
||||
+
|
||||
+ base += size;
|
||||
+ remaining = check - (base - (char *)vb);
|
||||
+
|
||||
+ for (p = 0; p < nparams; p++) {
|
||||
+ __uint32_t *tp; /* points to int holding vtype/vlen */
|
||||
+ pmEventParameter *epp = (pmEventParameter *)base;
|
||||
+
|
||||
+ if (sizeof(pmEventParameter) > remaining) {
|
||||
+ if (pmDebugOptions.pdu)
|
||||
+ fprintf(stderr, "__pmEventArrayCheck #5: PM_ERR_IPC: pmid[%d] value[%d] record[%d] param[%d] event record past end of PDU buffer\n",
|
||||
+ pmid, value, r, p);
|
||||
+ return PM_ERR_IPC;
|
||||
+ }
|
||||
+
|
||||
+ tp = (__uint32_t *)&epp->ep_pmid;
|
||||
+ tp++; /* now points to ep_type/ep_len */
|
||||
+ *tp = ntohl(*tp);
|
||||
+ type = epp->ep_type;
|
||||
+ size = epp->ep_len;
|
||||
+ *tp = htonl(*tp); /* leave the buffer how we found it */
|
||||
+
|
||||
+ if (sizeof(pmID) + size > remaining) {
|
||||
+ if (pmDebugOptions.pdu)
|
||||
+ fprintf(stderr, "__pmEventArrayCheck #6: PM_ERR_IPC: pmid[%d] value[%d] record[%d] param[%d] event record past end of PDU buffer\n",
|
||||
+ pmid, value, r, p);
|
||||
+ return PM_ERR_IPC;
|
||||
+ }
|
||||
+
|
||||
+ base += sizeof(pmID) + PM_PDU_SIZE_BYTES(size);
|
||||
+
|
||||
+ /*
|
||||
+ * final check for the types below, ep_len should be 4 or
|
||||
+ * 8, but a malformed PDU could have smaller ep_len values
|
||||
+ * and then unpacking these types risk going past the end
|
||||
+ * of the PDU buffer
|
||||
+ */
|
||||
+ size = 0;
|
||||
+ switch (type) {
|
||||
+ case PM_TYPE_32:
|
||||
+ case PM_TYPE_U32:
|
||||
+ case PM_TYPE_FLOAT:
|
||||
+ size = 4; /* 32-bit types */
|
||||
+ break;
|
||||
+ case PM_TYPE_64:
|
||||
+ case PM_TYPE_U64:
|
||||
+ case PM_TYPE_DOUBLE:
|
||||
+ size = 8; /* 64-bit types */
|
||||
+ break;
|
||||
+ }
|
||||
+ if (size > 0 && sizeof(pmID) + size > remaining) {
|
||||
+ if (pmDebugOptions.pdu)
|
||||
+ fprintf(stderr, "__pmEventArrayCheck #7: PM_ERR_IPC: pmid[%d] value[%d] record[%d] param[%d] event record past end of PDU buffer\n",
|
||||
+ pmid, value, r, p);
|
||||
+ return PM_ERR_IPC;
|
||||
+ }
|
||||
+ }
|
||||
+ }
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
#if defined(HAVE_64BIT_PTR)
|
||||
int
|
||||
__pmDecodeValueSet(__pmPDU *pdubuf, int pdulen, __pmPDU *data, char *pduend,
|
||||
@@ -336,7 +465,7 @@ __pmDecodeValueSet(__pmPDU *pdubuf, int
|
||||
int i, j;
|
||||
/*
|
||||
* Note: all sizes are in units of bytes ... beware that 'data' is in
|
||||
- * units of __pmPDU
|
||||
+ * units of __pmPDU (four bytes)
|
||||
*/
|
||||
int vsize; /* size of vlist_t's in PDU buffer */
|
||||
int nvsize; /* size of pmValue's after decode */
|
||||
@@ -414,11 +543,10 @@ __pmDecodeValueSet(__pmPDU *pdubuf, int
|
||||
return PM_ERR_IPC;
|
||||
}
|
||||
vindex = ntohl(pduvp->value.lval);
|
||||
- if (vindex < 0 || vindex > pdulen) {
|
||||
+ if (vindex < 0 || (char *)&pdubuf[vindex] >= pduend) {
|
||||
if (pmDebugOptions.pdu && pmDebugOptions.desperate)
|
||||
- fprintf(stderr, "%s: Bad: pmid[%d] value[%d] "
|
||||
- "vindex=%d\n",
|
||||
- "__pmDecodeValueSet", i, j, vindex);
|
||||
+ fprintf(stderr, "__pmDecodeValueSet: PM_ERR_IPC: pmid[%d] value[%d] vindex=%d (max=%ld)\n",
|
||||
+ i, j, vindex, (long)((pduend-(char *)pdubuf) / sizeof(pdubuf[0])-1));
|
||||
return PM_ERR_IPC;
|
||||
}
|
||||
pduvbp = (pmValueBlock *)&pdubuf[vindex];
|
||||
@@ -427,29 +555,31 @@ __pmDecodeValueSet(__pmPDU *pdubuf, int
|
||||
check = (size_t)(pduend - (char *)pduvbp);
|
||||
if (sizeof(unsigned int) > check) {
|
||||
if (pmDebugOptions.pdu && pmDebugOptions.desperate)
|
||||
- fprintf(stderr, "%s: Bad: pmid[%d] value[%d] "
|
||||
- "second pduvp past end of "
|
||||
- "PDU buffer\n",
|
||||
- "__pmDecodeValueSet", i, j);
|
||||
+ fprintf(stderr, "__pmDecodeValueSet: PM_ERR_IPC: pmid[%d] value[%d] second pduvp past end of PDU buffer\n",
|
||||
+ i, j);
|
||||
return PM_ERR_IPC;
|
||||
}
|
||||
-
|
||||
- __ntohpmValueBlock(pduvbp);
|
||||
+ __ntohpmValueBlock_hdr(pduvbp);
|
||||
if (pduvbp->vlen < PM_VAL_HDR_SIZE ||
|
||||
pduvbp->vlen > pdulen) {
|
||||
- if (pmDebugOptions.pdu && pmDebugOptions.desperate)
|
||||
- fprintf(stderr, "%s: Bad: pmid[%d] value[%d] "
|
||||
- "vlen=%d\n", "__pmDecodeValueSet",
|
||||
- i, j, pduvbp->vlen);
|
||||
+ if (pmDebugOptions.pdu)
|
||||
+ fprintf(stderr, "__pmDecodeValueSet: PM_ERR_IPC: pmid[%d] value[%d] vlen=%d\n",
|
||||
+ i, j, pduvbp->vlen);
|
||||
return PM_ERR_IPC;
|
||||
}
|
||||
- if (pduvbp->vlen > (size_t)(pduend - (char *)pduvbp)) {
|
||||
- if (pmDebugOptions.pdu && pmDebugOptions.desperate)
|
||||
- fprintf(stderr, "%s: Bad: pmid[%d] value[%d] "
|
||||
- "pduvp past end of PDU buffer\n",
|
||||
- "__pmDecodeValueSet", i, j);
|
||||
+ if (pduvbp->vlen > check) {
|
||||
+ if (pmDebugOptions.pdu)
|
||||
+ fprintf(stderr, "__pmDecodeValueSet: PM_ERR_IPC: pmid[%d] value[%d] pduvp past end of PDU buffer\n",
|
||||
+ i, j);
|
||||
return PM_ERR_IPC;
|
||||
}
|
||||
+ if (pduvbp->vtype == PM_TYPE_HIGHRES_EVENT ||
|
||||
+ pduvbp->vtype == PM_TYPE_EVENT) {
|
||||
+ vindex = (pduvbp->vtype == PM_TYPE_HIGHRES_EVENT);
|
||||
+ if (__pmEventArrayCheck(pduvbp, vindex, i, j, check) < 0)
|
||||
+ return PM_ERR_IPC;
|
||||
+ }
|
||||
+ __ntohpmValueBlock_buf(pduvbp);
|
||||
vbsize += PM_PDU_SIZE_BYTES(pduvbp->vlen);
|
||||
if (pmDebugOptions.pdu && pmDebugOptions.desperate) {
|
||||
fprintf(stderr, " len: %d type: %d",
|
||||
@@ -682,11 +812,10 @@ __pmDecodeValueSet(__pmPDU *pdubuf, int
|
||||
} else {
|
||||
/* salvage pmValueBlocks from end of PDU */
|
||||
vindex = ntohl(pduvp->value.lval);
|
||||
- if (vindex < 0 || vindex > pdulen) {
|
||||
+ if (vindex < 0 || (char *)&pdubuf[vindex] >= pduend) {
|
||||
if (pmDebugOptions.pdu && pmDebugOptions.desperate)
|
||||
- fprintf(stderr, "%s: Bad: pmid[%d] value[%d] "
|
||||
- "vindex=%d\n",
|
||||
- "__pmDecodeValueSet", i, j, vindex);
|
||||
+ fprintf(stderr, "__pmDecodeValueSet: PM_ERR_IPC: pmid[%d] value[%d] vindex=%d (max=%ld)\n",
|
||||
+ i, j, vindex, (long)((pduend-(char *)pdubuf) / sizeof(pdubuf[0])-1));
|
||||
return PM_ERR_IPC;
|
||||
}
|
||||
pduvbp = (pmValueBlock *)&pdubuf[vindex];
|
||||
@@ -701,7 +830,7 @@ __pmDecodeValueSet(__pmPDU *pdubuf, int
|
||||
"__pmDecodeValueSet", i, j);
|
||||
return PM_ERR_IPC;
|
||||
}
|
||||
- __ntohpmValueBlock(pduvbp);
|
||||
+ __ntohpmValueBlock_hdr(pduvbp);
|
||||
if (pduvbp->vlen < PM_VAL_HDR_SIZE ||
|
||||
pduvbp->vlen > pdulen) {
|
||||
if (pmDebugOptions.pdu && pmDebugOptions.desperate)
|
||||
@@ -710,13 +839,20 @@ __pmDecodeValueSet(__pmPDU *pdubuf, int
|
||||
i, j, pduvbp->vlen);
|
||||
return PM_ERR_IPC;
|
||||
}
|
||||
- if (pduvbp->vlen > (size_t)(pduend - (char *)pduvbp)) {
|
||||
+ if (pduvbp->vlen > check) {
|
||||
if (pmDebugOptions.pdu && pmDebugOptions.desperate)
|
||||
fprintf(stderr, "%s: Bad: pmid[%d] value[%d] "
|
||||
"pduvp past end of PDU buffer\n",
|
||||
"__pmDecodeValueSet", i, j);
|
||||
return PM_ERR_IPC;
|
||||
}
|
||||
+ if (pduvbp->vtype == PM_TYPE_HIGHRES_EVENT ||
|
||||
+ pduvbp->vtype == PM_TYPE_EVENT) {
|
||||
+ vindex = (pduvbp->vtype == PM_TYPE_HIGHRES_EVENT);
|
||||
+ if (__pmEventArrayCheck(pduvbp, vindex, i, j, check) < 0)
|
||||
+ return PM_ERR_IPC;
|
||||
+ }
|
||||
+ __ntohpmValueBlock_buf(pduvbp);
|
||||
pduvp->value.pval = pduvbp;
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,99 @@
|
||||
diff -Naurp pcp-5.3.7.orig/qa/640 pcp-5.3.7/qa/640
|
||||
--- pcp-5.3.7.orig/qa/640 2017-08-17 10:54:57.000000000 +1000
|
||||
+++ pcp-5.3.7/qa/640 2024-09-09 13:41:12.440235947 +1000
|
||||
@@ -6,6 +6,10 @@
|
||||
# years; so we now simply check the right permissions are in place
|
||||
# and move right along...
|
||||
#
|
||||
+# Aug 2024 update
|
||||
+# SuSE Issue G identifies another possible exploit, so try that
|
||||
+# as well.
|
||||
+#
|
||||
# Copyright (c) 1995-2002 Silicon Graphics, Inc. All Rights Reserved.
|
||||
#
|
||||
|
||||
@@ -17,13 +21,54 @@ echo "QA output created by $seq"
|
||||
. ./common.filter
|
||||
. ./common.check
|
||||
|
||||
-status=0 # success is the default!
|
||||
-trap "$sudo rm -f $tmp.*; exit \$status" 0 1 2 3 15
|
||||
+rm -f $seq.full
|
||||
+ls -li $PCP_LOG_DIR/NOTICES $tmp/badness >>$seq.full 2>&1
|
||||
+
|
||||
+_cleanup()
|
||||
+{
|
||||
+ if [ -f $PCP_LOG_DIR/NOTICES.$seq ]
|
||||
+ then
|
||||
+ $sudo rm -f $PCP_LOG_DIR/NOTICES
|
||||
+ $sudo mv $PCP_LOG_DIR/NOTICES.$seq $PCP_LOG_DIR/NOTICES
|
||||
+ fi
|
||||
+ ls -li $PCP_LOG_DIR/NOTICES $tmp/badness >>$seq.full 2>&1
|
||||
+ $sudo rm -rf $tmp $tmp.*
|
||||
+}
|
||||
+
|
||||
+status=1 # failure is the default!
|
||||
+trap "_cleanup; exit \$status" 0 1 2 3 15
|
||||
+
|
||||
+_filter()
|
||||
+{
|
||||
+ sed \
|
||||
+ -e "s@$PCP_LOG_DIR@PCP_LOG_DIR@g" \
|
||||
+ -e '/^pmpost:/s/\[.*]/[DATE]/' \
|
||||
+ # end
|
||||
+}
|
||||
|
||||
# real QA test starts here
|
||||
pmpost=$PCP_BINADM_DIR/pmpost
|
||||
-echo "Using pmpost binary: $pmpost" > $seq.full
|
||||
+echo "Using pmpost binary: $pmpost" >>$seq.full
|
||||
test -u "$pmpost" && echo "FAIL: pmpost has setuid bit set"
|
||||
test -g "$pmpost" && echo "FAIL: pmpost has setgid bit set"
|
||||
+
|
||||
+$sudo mkdir $tmp || exit
|
||||
+$sudo chmod 700 $tmp || exit
|
||||
+$sudo -u $PCP_USER mv $PCP_LOG_DIR/NOTICES $PCP_LOG_DIR/NOTICES.$seq
|
||||
+
|
||||
+$sudo -u $PCP_USER ln -s $tmp/badness $PCP_LOG_DIR/NOTICES >>$seq.full
|
||||
+$pmpost ordinary user 2>&1 | _filter
|
||||
+$sudo ls -li $PCP_LOG_DIR/NOTICES $tmp/badness >>$seq.full 2>&1
|
||||
+$sudo -u pcp $pmpost pcp user 2>&1 | _filter
|
||||
+$sudo ls -li $PCP_LOG_DIR/NOTICES $tmp/badness >>$seq.full 2>&1
|
||||
+$sudo $pmpost root user 2>&1 | _filter
|
||||
+$sudo ls -li $PCP_LOG_DIR/NOTICES $tmp/badness >>$seq.full 2>&1
|
||||
+if $sudo test -f $tmp/badness
|
||||
+then
|
||||
+ $sudo cat $tmp/badness
|
||||
+fi
|
||||
+
|
||||
echo "Test complete"
|
||||
+
|
||||
+status=0
|
||||
exit
|
||||
diff -Naurp pcp-5.3.7.orig/qa/640.out pcp-5.3.7/qa/640.out
|
||||
--- pcp-5.3.7.orig/qa/640.out 2017-08-17 10:54:57.000000000 +1000
|
||||
+++ pcp-5.3.7/qa/640.out 2024-09-09 13:41:12.440235947 +1000
|
||||
@@ -1,2 +1,5 @@
|
||||
QA output created by 640
|
||||
+pmpost: unposted message: [DATE] ordinary user
|
||||
+pmpost: unposted message: [DATE] pcp user
|
||||
+pmpost: unposted message: [DATE] root user
|
||||
Test complete
|
||||
diff -Naurp pcp-5.3.7.orig/src/pmpost/pmpost.c pcp-5.3.7/src/pmpost/pmpost.c
|
||||
--- pcp-5.3.7.orig/src/pmpost/pmpost.c 2021-02-17 15:27:41.000000000 +1100
|
||||
+++ pcp-5.3.7/src/pmpost/pmpost.c 2024-09-09 13:41:12.440235947 +1000
|
||||
@@ -141,8 +141,12 @@ main(int argc, char **argv)
|
||||
goto oops;
|
||||
}
|
||||
|
||||
- if ((fd = open(notices, O_WRONLY|O_APPEND, 0)) < 0) {
|
||||
- if ((fd = open(notices, O_WRONLY|O_CREAT|O_APPEND, 0664)) < 0) {
|
||||
+ if ((fd = open(notices, O_WRONLY|O_APPEND|O_NOFOLLOW, 0)) < 0) {
|
||||
+ if (oserror() == ELOOP) {
|
||||
+ /* last component is symlink => attack? ... bail! */
|
||||
+ goto oops;
|
||||
+ }
|
||||
+ if ((fd = open(notices, O_WRONLY|O_CREAT|O_APPEND|O_NOFOLLOW, 0664)) < 0) {
|
||||
fprintf(stderr, "pmpost: cannot open or create file \"%s\": %s\n",
|
||||
notices, osstrerror());
|
||||
goto oops;
|
||||
Loading…
Reference in new issue