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-rw-r--r--main/openvpn/src/openvpn/ssl.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/main/openvpn/src/openvpn/ssl.c b/main/openvpn/src/openvpn/ssl.c
index 2adfa26f..cdc8eb19 100644
--- a/main/openvpn/src/openvpn/ssl.c
+++ b/main/openvpn/src/openvpn/ssl.c
@@ -2036,7 +2036,11 @@ key_method_2_read (struct buffer *buf, struct tls_multi *multi, struct tls_sessi
ASSERT (session->opt->key_method == 2);
/* discard leading uint32 */
- ASSERT (buf_advance (buf, 4));
+ if (!buf_advance (buf, 4)) {
+ msg (D_TLS_ERRORS, "TLS ERROR: Plaintext buffer too short (%d bytes).",
+ buf->len);
+ goto error;
+ }
/* get key method */
key_method_flags = buf_read_u8 (buf);