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Debian: Security update for Iceweasel

Several vulnerabilities have been discovered in Iceweasel, a web browser based on Firefox. The included XULRunner library provides rendering services for several other applications included in Debian. Mozilla developers discovered several memory corruption bugs, which may lead to the execution of arbitrary code. Abhishek Arya discovered a use-after-free problem when working with column layout with absolute positioning in a container that changes size, which may lead to the execution of arbitrary code. Abhishek Arya discovered a heap buffer overflow in utf16 to latin1 character set conersion, allowing to execute arbitray code. Updated packages are available from security.debian.org.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- -------------------------------------------------------------------------
Debian Security Advisory DSA-2488-1                   security@debian.org
http://www.debian.org/security/                           Thijs Kinkhorst
June 7, 2012                           http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : iceweasel
Vulnerability  : several vulnerabilities
Problem type   : local (remote)
Debian-specific: no
CVE ID         : CVE-2012-1937 CVE-2012-1940 CVE-2012-1947

Several vulnerabilities have been discovered in Iceweasel, a web
browser based on Firefox. The included XULRunner library provides
rendering services for several other applications included in Debian.

CVE-2012-1937

 Mozilla developers discovered several memory corruption bugs,
 which may lead to the execution of arbitrary code.

CVE-2012-1940

 Abhishek Arya discovered a use-after-free problem when working
 with column layout with absolute positioning in a container that
 changes size, which may lead to the execution of arbitrary code.

CVE-2012-1947

 Abhishek Arya discovered a heap buffer overflow in utf16 to latin1
 character set conersion, allowing to execute arbitray code.


Note: We'd like to advise users of Iceweasel's 3.5 branch in Debian
stable to consider to upgrade to the Iceweasel 10.0 ESR (Extended
Support Release) which is now availble in Debian Backports.
Although Debian will continue to support Iceweasel 3.5 in stable with
security updates, this can only be done on a best effort base as
upstream provides no such support anymore. On top of that, the 10.0
branch adds proactive security features to the browser.

For the stable distribution (squeeze), this problem has been fixed in
version 3.5.16-16.

For the unstable distribution (sid), this problem has been fixed in
version 10.0.5esr-1.

We recommend that you upgrade your iceweasel packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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