generic-library/openssl
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Check there is enough room for extension.

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(cherry picked from commit 7d89b3bf42e4b4067371ab33ef7631434e41d1e4)
This commit is contained in:
David Benjamin 2014-06-02 18:55:20 +01:00 committed by Dr. Stephen Henson
parent bcc311668e
commit ebda73f867
1 changed files with 4 additions and 0 deletions
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4
ssl/t1_lib.c
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@ -617,6 +617,8 @@ unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *p, unsigned cha
#ifndef OPENSSL_NO_HEARTBEATS #ifndef OPENSSL_NO_HEARTBEATS
/* Add Heartbeat extension */ /* Add Heartbeat extension */
if ((limit - ret - 4 - 1) < 0)
return NULL;
s2n(TLSEXT_TYPE_heartbeat,ret); s2n(TLSEXT_TYPE_heartbeat,ret);
s2n(1,ret); s2n(1,ret);
/* Set mode: /* Set mode:
@ -844,6 +846,8 @@ unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *p, unsigned cha
/* Add Heartbeat extension if we've received one */ /* Add Heartbeat extension if we've received one */
if (s->tlsext_heartbeat & SSL_TLSEXT_HB_ENABLED) if (s->tlsext_heartbeat & SSL_TLSEXT_HB_ENABLED)
{ {
if ((limit - ret - 4 - 1) < 0)
return NULL;
s2n(TLSEXT_TYPE_heartbeat,ret); s2n(TLSEXT_TYPE_heartbeat,ret);
s2n(1,ret); s2n(1,ret);
/* Set mode: /* Set mode: