INFORMATION BULLETIN

S-335: Mozilla Firefox Vulnerabilities

[Mozilla Foundation Security Advisory 2008-33]

July 8, 2008 18:00 GMT
[REVISED 30 Jul 2008]
[REVISED 18 Aug 2008]


PROBLEM:	There is a vulnerability in Firefox that could crash in Mozilla's block reflow code that could be used by an attacker to crash the browser and run arbitrary code on the victim's computer.
PLATFORM:	Firefox versions prior to 2.0.0.15 Debian GNU/Linux 4.0 (etch)
DAMAGE:	Execute arbitrary code and DoS.
SOLUTION:	Upgrade to the appropriate version.

VULNERABILITY ASSESSMENT:	The risk is MEDIUM. A remote, unauthenticated attacker may be able to execute arbitrary code or cause a vulnerable browser to crash.

CVSS 2 BASE SCORE: TEMPORAL SCORE: VECTOR:	7.5 6.2 (AV:N/AC:L/Au:N/C:P/I:P/A:P/E:F/RL:OF/RC:C)

LINKS:
CIAC BULLETIN:	http://www.ciac.org/ciac/bulletins/s-335.shtml
ORIGINAL BULLETIN:	http://www.mozilla.org/security/announce/2008/mfsa2008-33.html
ADDITIONAL LINKS:	http://www.kb.cert.org/vuls/id/607267 https://rhn.redhat.com/errata/RHSA-2008-0547.html http://www.debian.org/security/2008/dsa-1607 http://www.debian.org/security/2008/dsa-1615 http://www.debian.org/security/2008/dsa-1621
CVE:	CVE-2008-2811 CVE-2008-2798 CVE-2008-2799 CVE-2008-2800 CVE-2008-2801 CVE-2008-2802 CVE-2008-2803 CVE-2008-2805 CVE-2008-2807 CVE-2008-2808 CVE-2008-2809 CVE-2008-2810

REVISION HISTORY:
07/30/2008 - revised S-335 to add a link to Debian Security Advisory DSA-1607-1 for Debian GNU/Linux 4.0 (etch).
08/18/2008 - revised S-335 to add a link to Debian Security Advisories DSA-1615-1 and DSA-1621-1 for Debian GNU/Linux 4.0 (etch).

[***** Start Mozilla Foundation Security Advisory 2008-33 *****]

Mozilla Foundation Security Advisory 2008-33

Title: Crash and remote code execution in block reflow
Impact: Critical
Announced: July 1, 2008
Reporter: Astabis (iSIGHT Partners GVP Program)
Products: Firefox 2, Thunderbird 2, SeaMonkey

Fixed in: Firefox 2.0.0.15
SeaMonkey 1.1.10

Description

Security research firm Astabis reported a vulnerability in Firefox 2 submitted through the iSIGHT Partners GVP Program by Greg McManus, Primary GVP Researcher. The reported crash in Mozilla's block reflow code could be used by an attacker to crash the browser and run arbitrary code on the victim's computer.

This vulnerability does not affect Firefox 3.

Thunderbird shares the browser engine with Firefox and could be vulnerable if JavaScript were to be enabled in mail. This is not the default setting and we strongly discourage users from running JavaScript in mail.

Workaround

Disable JavaScript until a version containing these fixes can be installed.

References


[***** End Mozilla Foundation Security Advisory 2008-33 *****]

CIAC wishes to acknowledge the contributions of Mozilla for the information contained in this bulletin.

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