USN-874-1: Firefox 3.5 and Xulrunner 1.9.1 vulnerabilities

18 December 2009

firefox-3.5, xulrunner-1.9.1 vulnerabilities

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

  • Ubuntu 9.10

Software Description

  • firefox-3.5
  • xulrunner-1.9.1

Details

Jesse Ruderman, Josh Soref, Martijn Wargers, Jose Angel, Olli Pettay, and David James discovered several flaws in the browser and JavaScript engines of Firefox. If a user were tricked into viewing a malicious website, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2009-3979, CVE-2009-3980, CVE-2009-3982, CVE-2009-3986)

Takehiro Takahashi discovered flaws in the NTLM implementation in Firefox. If an NTLM authenticated user visited a malicious website, a remote attacker could send requests to other applications, authenticated as the user. (CVE-2009-3983)

Jonathan Morgan discovered that Firefox did not properly display SSL indicators under certain circumstances. This could be used by an attacker to spoof an encrypted page, such as in a phishing attack. (CVE-2009-3984)

Jordi Chancel discovered that Firefox did not properly display invalid URLs for a blank page. If a user were tricked into accessing a malicious website, an attacker could exploit this to spoof the location bar, such as in a phishing attack. (CVE-2009-3985)

David Keeler, Bob Clary, and Dan Kaminsky discovered several flaws in third party media libraries. If a user were tricked into opening a crafted media file, a remote attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2009-3388, CVE-2009-3389)

Update instructions

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

Ubuntu 9.10
firefox-3.5 - 3.5.6+nobinonly-0ubuntu0.9.10.1
xulrunner-1.9.1 - 1.9.1.6+nobinonly-0ubuntu0.9.10.1

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 to effect the necessary changes.

References