USN-626-1: Firefox and xulrunner vulnerabilities

28 July 2008

firefox-3.0, xulrunner-1.9 vulnerabilities

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

  • Ubuntu 8.04 LTS

Software Description

  • firefox-3.0
  • xulrunner-1.9

Details

A flaw was discovered in the browser engine. A variable could be made to overflow causing the browser to crash. If a user were tricked into opening a malicious web page, an attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2008-2785)

Billy Rios discovered that Firefox and xulrunner, as used by browsers such as Epiphany, did not properly perform URI splitting with pipe symbols when passed a command-line URI. If Firefox or xulrunner were passed a malicious URL, an attacker may be able to execute local content with chrome privileges. (CVE-2008-2933)

Update instructions

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

Ubuntu 8.04 LTS
firefox-3.0 - 3.0.1+build1+nobinonly-0ubuntu0.8.04.3
xulrunner-1.9 - 1.9.0.1+build1+nobinonly-0ubuntu0.8.04.3

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

After a standard system upgrade you need to restart Firefox and any applications that use xulrunner, such as Epiphany, to effect the necessary changes.

References