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openssl3/0048-correctly-handle-recor...

53 lines
2.2 KiB

diff -up openssl-3.0.1/apps/s_server.c.handle-records openssl-3.0.1/apps/s_server.c
--- openssl-3.0.1/apps/s_server.c.handle-records 2022-02-03 15:26:16.803434943 +0100
+++ openssl-3.0.1/apps/s_server.c 2022-02-03 15:34:33.358298697 +0100
@@ -2982,7 +2982,9 @@ static int www_body(int s, int stype, in
/* Set width for a select call if needed */
width = s + 1;
- buf = app_malloc(bufsize, "server www buffer");
+ /* as we use BIO_gets(), and it always null terminates data, we need
+ * to allocate 1 byte longer buffer to fit the full 2^14 byte record */
+ buf = app_malloc(bufsize + 1, "server www buffer");
io = BIO_new(BIO_f_buffer());
ssl_bio = BIO_new(BIO_f_ssl());
if ((io == NULL) || (ssl_bio == NULL))
@@ -3047,7 +3049,7 @@ static int www_body(int s, int stype, in
}
for (;;) {
- i = BIO_gets(io, buf, bufsize - 1);
+ i = BIO_gets(io, buf, bufsize + 1);
if (i < 0) { /* error */
if (!BIO_should_retry(io) && !SSL_waiting_for_async(con)) {
if (!s_quiet)
@@ -3112,7 +3114,7 @@ static int www_body(int s, int stype, in
* we're expecting to come from the client. If they haven't
* sent one there's not much we can do.
*/
- BIO_gets(io, buf, bufsize - 1);
+ BIO_gets(io, buf, bufsize + 1);
}
BIO_puts(io,
@@ -3401,7 +3403,9 @@ static int rev_body(int s, int stype, in
SSL *con;
BIO *io, *ssl_bio, *sbio;
- buf = app_malloc(bufsize, "server rev buffer");
+ /* as we use BIO_gets(), and it always null terminates data, we need
+ * to allocate 1 byte longer buffer to fit the full 2^14 byte record */
+ buf = app_malloc(bufsize + 1, "server rev buffer");
io = BIO_new(BIO_f_buffer());
ssl_bio = BIO_new(BIO_f_ssl());
if ((io == NULL) || (ssl_bio == NULL))
@@ -3476,7 +3480,7 @@ static int rev_body(int s, int stype, in
print_ssl_summary(con);
for (;;) {
- i = BIO_gets(io, buf, bufsize - 1);
+ i = BIO_gets(io, buf, bufsize + 1);
if (i < 0) { /* error */
if (!BIO_should_retry(io)) {
if (!s_quiet)