USN-546-2: Firefox regression

4 December 2007

firefox regression

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

  • Ubuntu 7.10
  • Ubuntu 7.04
  • Ubuntu 6.10

Software Description

  • firefox

Details

USN-546-1 fixed vulnerabilities in Firefox. The upstream update included a faulty patch which caused the drawImage method of the canvas element to fail. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that Firefox incorrectly associated redirected sites as the origin of “jar:” contents. A malicious web site could exploit this to modify or steal confidential data (such as passwords) from other web sites. (CVE-2007-5947)

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-2007-5959)

Gregory Fleischer discovered that it was possible to use JavaScript to manipulate Firefox’s Referer header. A malicious web site could exploit this to conduct cross-site request forgeries against sites that relied only on Referer headers for protection from such attacks. (CVE-2007-5960)

Update instructions

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

Ubuntu 7.10
firefox - 2.0.0.11+2nobinonly-0ubuntu0.7.10
Ubuntu 7.04
firefox - 2.0.0.11+1nobinonly-0ubuntu0.7.4
Ubuntu 6.10
firefox - 2.0.0.11+0nobinonly-0ubuntu0.6.10

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