USN-874-1 fixed vulnerabilities in Firefox and Xulrunner. The upstream changes introduced a regression when using NTLM authentication. This update fixes the problem and adds additional stability fixes.
We apologize for the inconvenience.
8 January 2010
A security issue affects these releases of Ubuntu and its derivatives:
USN-874-1 fixed vulnerabilities in Firefox and Xulrunner. The upstream changes introduced a regression when using NTLM authentication. This update fixes the problem and adds additional stability fixes.
We apologize for the inconvenience.
Original advisory 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)
The problem can be corrected by updating your system to the following package versions:
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.
Vulmon