Bug 788858 (CVE-2011-3960)

Summary: CVE-2011-3960 libvorbis: Stack-buffer overflow in render_line
Product: [Other] Security Response Reporter: Huzaifa S. Sidhpurwala <huzaifas>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: ajax, hdegoede, jnovy
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-02-09 07:33:54 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Huzaifa S. Sidhpurwala 2012-02-09 06:32:15 UTC 
Common Vulnerabilities and Exposures assigned an identifier CVE-2011-3960 to
the following vulnerability:

Name: CVE-2011-3960
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3960
Assigned: 20111001
Reference: CONFIRM:http://code.google.com/p/chromium/issues/detail?id=108416
Reference: CONFIRM:http://googlechromereleases.blogspot.com/2012/02/stable-channel-update.html

Google Chrome before 17.0.963.46 does not properly decode audio data,
which allows remote attackers to cause a denial of service
(out-of-bounds read) via unspecified vectors.
Comment 1 Huzaifa S. Sidhpurwala 2012-02-09 06:37:26 UTC 
Patch:
https://trac.xiph.org/changeset/18183
https://trac.xiph.org/changeset/18184
Comment 2 Huzaifa S. Sidhpurwala 2012-02-09 07:32:32 UTC 
(In reply to comment #1)
> Patch:
> https://trac.xiph.org/changeset/18183
> https://trac.xiph.org/changeset/18184

The above commits are not actually specific to the chrome security flaw fix. The guarding which has been added to prevent the overflow is already present in libvorbis.
Comment 3 Huzaifa S. Sidhpurwala 2012-02-09 07:33:13 UTC 
Statement:

Not vulnerable. This issue did not affect the versions of libvorbis as shipped
with Red Hat Enterprise Linux 4, 5, and 6.
Comment 4 Huzaifa S. Sidhpurwala 2012-02-09 07:33:54 UTC 
This issue does not affect the version of libvorbis as shipped with Fedora 15 and Fedora 16
Comment 5 Huzaifa S. Sidhpurwala 2012-02-09 09:45:05 UTC 
(In reply to comment #2)
> (In reply to comment #1)
> > Patch:
> > https://trac.xiph.org/changeset/18183
> > https://trac.xiph.org/changeset/18184
> 
> The above commits are not actually specific to the chrome security flaw fix.
> The guarding which has been added to prevent the overflow is already present in
> libvorbis.

Just to clarify the above comment, the flaw does not affect libvorbis, because the relevant vulnerable code segment is not present in libvorbis.