REDHAT-BUG-598738: High severity openssl vulnerability

CMS is disabled by default in OpenSSL 0.9.8h and later, but is enabled by default in OpenSSL 1.0.0. The older PKCS#7 code is not affected.

The issue is in CMS handling of structures containing OriginatorInfo. Such structures can cause invalid memory writes or a double free.

The advisory states that OpenSSL 0.9.8o and 1.0.0a contain the patch. Users of the OpenSSL CMS code should update to one of those corrected versions.

Published Jun 1, 2010

Updated

From the upstream advisory [1]:

nvalid ASN1 module definition for CMS. =======================================

CMS structures containing OriginatorInfo are mishandled this can write to invalid memory addresses or free up memory twice (CVE-2010-0742).

This bug is only present in the CMS code: the older PKCS#7 code is not affected.

CMS is only present in OpenSSL 0.9.8h and later where it is disabled by default and 1.0.0 where it is enabled by default.

Users of OpenSSL CMS code should update to 0.9.8o or 1.0.0a which contains a patch to correct this issue.

Thanks to Ronald Moesbergen for reporting this issue.

This has been corrected upstream via:

http://cvs.openssl.org/chngview?cn=19693

[1] http://www.openssl.org/news/secadv20100601.txt

Affected Software

2 affected components

OpenSSL OpenSSL>=0.9.8h<1.0.0

OpenSSL OpenSSL<0.9.8o, <1.0.0a

Jun 1, 2010

Data Sourced

via Red Hat·11:05 PM

DescriptionSeverityAffected Software

CMS is disabled by default in OpenSSL 0.9.8h and later, but is enabled by default in OpenSSL 1.0.0. The older PKCS#7 code is not affected.

The issue is in CMS handling of structures containing OriginatorInfo. Such structures can cause invalid memory writes or a double free.

The advisory states that OpenSSL 0.9.8o and 1.0.0a contain the patch. Users of the OpenSSL CMS code should update to one of those corrected versions.