generic-library/openssl
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Submitted by: Bodo Moeller and Adam Langley (Google).

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Fix for "Record of death" vulnerability CVE-2010-0740.
This commit is contained in:
Dr. Stephen Henson 2010-03-24 13:16:42 +00:00
parent c3484e0268
commit 354f92d66a
2 changed files with 13 additions and 4 deletions
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11
CHANGES
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@ -2,7 +2,16 @@
OpenSSL CHANGES OpenSSL CHANGES
_______________ _______________
Changes between 0.9.8m and 0.9.8n [xx XXX xxxx] Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
*) When rejecting SSL/TLS records due to an incorrect version number, never
update s->server with a new major version number. As of
- OpenSSL 0.9.8m if 'short' is a 16-bit type,
- OpenSSL 0.9.8f if 'short' is longer than 16 bits,
the previous behavior could result in a read attempt at NULL when
receiving specific incorrect SSL/TLS records once record payload
protection is active. (CVE-2010-0740)
[Bodo Moeller, Adam Langley <agl@chromium.org>]
*) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
could be crashed if the relevant tables were not present (e.g. chrooted). could be crashed if the relevant tables were not present (e.g. chrooted).

6
ssl/s3_pkt.c
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@ -291,9 +291,9 @@ again:
if (version != s->version) if (version != s->version)
{ {
SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_WRONG_VERSION_NUMBER); SSLerr(SSL_F_SSL3_GET_RECORD,SSL_R_WRONG_VERSION_NUMBER);
/* Send back error using their if ((s->version & 0xFF00) == (version & 0xFF00))
* version number :-) */ /* Send back error using their minor version number :-) */
s->version=version; s->version = (unsigned short)version;
al=SSL_AD_PROTOCOL_VERSION; al=SSL_AD_PROTOCOL_VERSION;
goto f_err; goto f_err;
} }