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389-ds-base/SOURCES/0001-issue-5647-covscan-mem...

120 lines
4.1 KiB

From dddb14210b402f317e566b6387c76a8e659bf7fa Mon Sep 17 00:00:00 2001
From: progier389 <progier@redhat.com>
Date: Tue, 14 Feb 2023 13:34:10 +0100
Subject: [PATCH 1/2] issue 5647 - covscan: memory leak in audit log when
adding entries (#5650)
covscan reported an issue about "vals" variable in auditlog.c:231 and indeed a charray_free is missing.
Issue: 5647
Reviewed by: @mreynolds389, @droideck
---
ldap/servers/slapd/auditlog.c | 71 +++++++++++++++++++----------------
1 file changed, 38 insertions(+), 33 deletions(-)
diff --git a/ldap/servers/slapd/auditlog.c b/ldap/servers/slapd/auditlog.c
index 68cbc674d..3128e0497 100644
--- a/ldap/servers/slapd/auditlog.c
+++ b/ldap/servers/slapd/auditlog.c
@@ -177,6 +177,40 @@ write_auditfail_log_entry(Slapi_PBlock *pb)
slapi_ch_free_string(&audit_config);
}
+/*
+ * Write the attribute values to the audit log as "comments"
+ *
+ * Slapi_Attr *entry - the attribute begin logged.
+ * char *attrname - the attribute name.
+ * lenstr *l - the audit log buffer
+ *
+ * Resulting output in the log:
+ *
+ * #ATTR: VALUE
+ * #ATTR: VALUE
+ */
+static void
+log_entry_attr(Slapi_Attr *entry_attr, char *attrname, lenstr *l)
+{
+ Slapi_Value **vals = attr_get_present_values(entry_attr);
+ for(size_t i = 0; vals && vals[i]; i++) {
+ char log_val[256] = "";
+ const struct berval *bv = slapi_value_get_berval(vals[i]);
+ if (bv->bv_len >= 256) {
+ strncpy(log_val, bv->bv_val, 252);
+ strcpy(log_val+252, "...");
+ } else {
+ strncpy(log_val, bv->bv_val, bv->bv_len);
+ log_val[bv->bv_len] = 0;
+ }
+ addlenstr(l, "#");
+ addlenstr(l, attrname);
+ addlenstr(l, ": ");
+ addlenstr(l, log_val);
+ addlenstr(l, "\n");
+ }
+}
+
/*
* Write "requested" attributes from the entry to the audit log as "comments"
*
@@ -212,21 +246,9 @@ add_entry_attrs(Slapi_Entry *entry, lenstr *l)
for (req_attr = ldap_utf8strtok_r(display_attrs, ", ", &last); req_attr;
req_attr = ldap_utf8strtok_r(NULL, ", ", &last))
{
- char **vals = slapi_entry_attr_get_charray(entry, req_attr);
- for(size_t i = 0; vals && vals[i]; i++) {
- char log_val[256] = {0};
-
- if (strlen(vals[i]) > 256) {
- strncpy(log_val, vals[i], 252);
- strcat(log_val, "...");
- } else {
- strcpy(log_val, vals[i]);
- }
- addlenstr(l, "#");
- addlenstr(l, req_attr);
- addlenstr(l, ": ");
- addlenstr(l, log_val);
- addlenstr(l, "\n");
+ slapi_entry_attr_find(entry, req_attr, &entry_attr);
+ if (entry_attr) {
+ log_entry_attr(entry_attr, req_attr, l);
}
}
} else {
@@ -234,7 +256,6 @@ add_entry_attrs(Slapi_Entry *entry, lenstr *l)
for (; entry_attr; entry_attr = entry_attr->a_next) {
Slapi_Value **vals = attr_get_present_values(entry_attr);
char *attr = NULL;
- const char *val = NULL;
slapi_attr_get_type(entry_attr, &attr);
if (strcmp(attr, PSEUDO_ATTR_UNHASHEDUSERPASSWORD) == 0) {
@@ -251,23 +272,7 @@ add_entry_attrs(Slapi_Entry *entry, lenstr *l)
addlenstr(l, ": ****************************\n");
continue;
}
-
- for(size_t i = 0; vals && vals[i]; i++) {
- char log_val[256] = {0};
-
- val = slapi_value_get_string(vals[i]);
- if (strlen(val) > 256) {
- strncpy(log_val, val, 252);
- strcat(log_val, "...");
- } else {
- strcpy(log_val, val);
- }
- addlenstr(l, "#");
- addlenstr(l, attr);
- addlenstr(l, ": ");
- addlenstr(l, log_val);
- addlenstr(l, "\n");
- }
+ log_entry_attr(entry_attr, attr, l);
}
}
slapi_ch_free_string(&display_attrs);
--
2.43.0