Secunia

Description
Some vulnerabilities have been reported in Mozilla Firefox, which can be exploited by malicious people to disclose sensitive information, bypass certain security restrictions, manipulate certain data, or compromise a user's system.

1) An array indexing error exists when allocating space for floating point numbers. This can be exploited to trigger a memory corruption when a specially crafted floating point number is processed.

Successful exploitation allows execution of arbitrary code.

The vulnerability is confirmed in version 3.0.14 and 3.5.3. Prior versions may also be affected.

2) An error in the form history functionality can be exploited to disclose history entries via a specially crafted web page that triggers the automatic filling of form fields.

3) An error when creating JavaScript web-workers recursively can be exploited to trigger the use of freed memory and cause a crash or potentially execute arbitrary code.

4) An error exists when parsing regular expressions used in Proxy Auto-configuration (PAC). This can be exploited to cause a crash or potentially execute arbitrary code via specially crafted configured PAC files.

5) An error when processing GIF color maps can be exploited to cause a heap-based buffer overflow and potentially execute arbitrary code via a specially crafted GIF file.

6) An error in the "XPCVariant::VariantDataToJS()" XPCOM utility can be exploited to execute arbitrary JavaScript code with chrome privileges.

7) An error in the implementation of the JavaScript "document.getSelection()" function can be exploited to read text selected on a web page in a different domain.

8) An error when downloading files can be exploited to display different file names in the download dialog title bar and download dialog body. This can be exploited to obfuscate file names via a right-to-left override character and potentially trick a user into running an executable file.

9) An error in the embedded liboggz library can be exploited to cause a crash or potentially execute arbitrary code.

10) Multiple errors in the embedded libvorbis library can be exploited to cause crashes or potentially execute arbitrary code.

11) An error in the embedded liboggplay library can be exploited to cause a crash or potentially execute arbitrary code.

12) Multiple errors in the Firefox 3 and Firefox 3.5 browser engines can be exploited to cause crashes or potentially execute arbitrary code.

13) Multiple errors in the Firefox 3.5 browser engine can be exploited to cause crashes or potentially execute arbitrary code.

14) An error in the Firefox 3 browser engine can be exploited to cause a crash or potentially execute arbitrary code.

15) Multiple errors in the Firefox 3.5 JavaScript engine can be exploited to cause crashes or potentially execute arbitrary code.

Solution
Update to version 3.0.15 or 3.5.4.

Provided and/or discovered by
1) * Reported in libc by Maksymilian Arciemowicz of SecurityReason.
* Independently discovered in Mozilla Firefox by Alin Rad Pop of Secunia Research.
2) Paul Stone, Context Information Security Ltd
5) regenrecht, reported via iDefense

The vendor also credits:
3) Orlando Berrera of Sec Theory
4) Marco C.
6) moz_bug_r_a4
7) Gregory Fleischer
8) Jesse Ruderman and Sid Stamm
9) Georgi Guninski
10) Lucas Adamski, Matthew Gregan, David Keeler, and Dan Kaminsky
11) Juan Becerra
12) Vladimir Vukicevic, Jesse Ruderman, Martijn Wargers, Daniel Banchero, David Keeler, and Boris Zbarsky
13) Thomas Frederiksen, Marcia Knous, Jesse Ruderman, Carsten Book, and Kevin Brosnan
14) Carsten Book
15) David Anderson and Jeff Walden

Changelog
Further details available in Customer Area

Original Advisory
Mozilla Foundation:
http://www.mozilla.org/security/announce/2009/mfsa2009-52.html
http://www.mozilla.org/security/announce/2009/mfsa2009-54.html
http://www.mozilla.org/security/announce/2009/mfsa2009-55.html
http://www.mozilla.org/security/announce/2009/mfsa2009-56.html
http://www.mozilla.org/security/announce/2009/mfsa2009-57.html
http://www.mozilla.org/security/announce/2009/mfsa2009-59.html
http://www.mozilla.org/security/announce/2009/mfsa2009-61.html
http://www.mozilla.org/security/announce/2009/mfsa2009-62.html
http://www.mozilla.org/security/announce/2009/mfsa2009-63.html
http://www.mozilla.org/security/announce/2009/mfsa2009-64.html

Secunia Research:
http://secunia.com/secunia_research/2009-35/

iDefense:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=830

Paul Stone:
http://archives.neohapsis.com/archives/fulldisclosure/2009-11/0040.html

Deep Links
Links available in Customer Area