USN-535-1: Firefox vulnerabilities

22 October 2007

firefox vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 7.10
  • Ubuntu 7.04
  • Ubuntu 6.10
  • Ubuntu 6.06 LTS

Software Description

  • firefox

Details

Various flaws were discovered in the layout and JavaScript engines. By tricking a user into opening a malicious web page, an attacker could execute arbitrary code with the user’s privileges. (CVE-2007-5336, CVE-2007-5339, CVE-2007-5340)

Michal Zalewski discovered that the onUnload event handlers were incorrectly able to access information outside the old page content. A malicious web site could exploit this to modify the contents, or steal confidential data (such as passwords), of the next loaded web page. (CVE-2007-1095)

Stefano Di Paola discovered that Firefox did not correctly request Digest Authentications. A malicious web site could exploit this to inject arbitrary HTTP headers or perform session splitting attacks against proxies. (CVE-2007-2292)

Flaws were discovered in the file upload form control. By tricking a user into opening a malicious web page, an attacker could force arbitrary files from the user’s computer to be uploaded without their consent. (CVE-2006-2894, CVE-2007-3511)

Eli Friedman discovered that XUL could be used to hide a window’s titlebar. A malicious web site could exploit this to enhance their attempts at creating phishing web sites. (CVE-2007-5334)

Georgi Guninski discovered that Firefox would allow file-system based web pages to access additional files. By tricking a user into opening a malicious web page from a gnome-vfs location, an attacker could steal arbitrary files from the user’s computer. (CVE-2007-5337)

It was discovered that the XPCNativeWrappers were not safe in certain situations. By tricking a user into opening a malicious web page, an attacker could run arbitrary JavaScript with the user’s privileges. (CVE-2007-5338)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 7.10
firefox - 2.0.0.8+2nobinonly-0ubuntu1
Ubuntu 7.04
firefox - 2.0.0.8+1nobinonly-0ubuntu1
Ubuntu 6.10
firefox - 2.0.0.8+0dfsg-0ubuntu0.6.10
Ubuntu 6.06 LTS
firefox - 1.5.dfsg+1.5.0.14~prepatch071011b-0ubuntu1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system upgrade you need to restart Firefox to effect the necessary changes.

References