Mozilla Firefox Multiple Vulnerabilities

SA33799

CVE-2009-0352, CVE-2009-0353, CVE-2009-0354, CVE-2009-0355, CVE-2009-0356, CVE-2009-0357, CVE-2009-0358

04 Feb 2009

Highly Critical

Vendor Patch

Mozilla Firefox 3.0.x

From remote

System access

This covers vulnerabilities where malicious people are able to gain system access and execute arbitrary code with the privileges of a local user.

Cross-Site Scripting

Cross-Site Scripting vulnerabilities allow a third party to manipulate the content or behaviour of a web application in a user's browser, without compromising the underlying system.

Different Cross-Site Scripting related vulnerabilities are also classified under this category, including "script insertion" and "cross-site request forgery".

Cross-Site Scripting vulnerabilities are often used against specific users of a website to steal their credentials or to conduct spoofing attacks.

Exposure of sensitive information

Vulnerabilities where documents or credentials are leaked or can be revealed either locally or from remote.

Exposure of system information

Vulnerabilities where excessive information about the system (e.g. version numbers, running services, installation paths, and similar) are exposed and can be revealed from remote and in some cases locally.

Security Bypass

This covers vulnerabilities or security issues where malicious users or people can bypass certain security mechanisms of the application.

The actual impact varies significantly depending on the design and purpose of the affected application.

Some vulnerabilities have been reported in Mozilla Firefox, which can be exploited by malicious, local users to potentially disclose sensitive information, and by malicious people to conduct cross-site scripting attacks, bypass certain security restrictions, disclose sensitive information, or potentially to compromise a user's system.

1) Multiple errors in the layout engine can be exploited to cause memory corruptions and potentially execute arbitrary code.

2) Multiple errors in the Javascript engine can be exploited to cause memory corruptions and potentially execute arbitrary code.

3) A chrome XBL method can be used in combination with "window.eval" to execute arbitrary Javascript code in the context of another web site

4) An error when restoring a closed tab can be exploited to modify an input control's text value, which allows e.g. to disclose the content of a local file when a user re-opens a tab.

5) An error in the processing of shortcut files can be exploited to execute arbitrary script code with chrome privileges e.g. via an HTML file that loads a privileged chrome document via a .desktop shortcut file.

This is related to:
SA32192

6) A security issue is caused due to cookies marked "HTTPOnly" being readable by Javascript via the "XMLHttpRequest.getResponseHeader" and "XMLHttpRequest.getAllResponseHeaders" APIs.

7) A security issue is caused due to Firefox ignoring certain HTTP directives to not cache web pages ("Cache-Control: no-store" and "Cache-Control: no-cache" for HTTPS pages), which can be exploited to disclose potentially sensitive information via cached pages.

Update to version 3.0.6.

The vendor credits:
1) Jesse Ruderman, Georgi Guninski, and Martijn Wargers
2) Gary Kwong
3, 4) moz_bug_r_a4
5) Georgi Guninski
6) Wladimir Palant
7) Paul Nel

Mozilla Foundation:
http://www.mozilla.org/security/announce/2009/mfsa2009-01.html
http://www.mozilla.org/security/announce/2009/mfsa2009-02.html
http://www.mozilla.org/security/announce/2009/mfsa2009-03.html
http://www.mozilla.org/security/announce/2009/mfsa2009-04.html
http://www.mozilla.org/security/announce/2009/mfsa2009-05.html
http://www.mozilla.org/security/announce/2009/mfsa2009-06.html