USN-921-1: Firefox 3.5 and Xulrunner vulnerabilities
9 April 2010
firefox-3.5, xulrunner-1.9.1 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 9.10
Martijn Wargers, Josh Soref, Jesse Ruderman, and Ehsan Akhgari discovered flaws in the browser engine 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-2010-0173, CVE-2010-0174)
It was discovered that Firefox could be made to access previously freed memory. 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-2010-0175, CVE-2010-0176, CVE-2010-0177)
Henry Sudhof discovered that an image tag could be used as a redirect to a mailto: URL to launch an external mail handler. (CVE-2010-0181)
Wladimir Palant discovered that Firefox did not always perform security checks on XML content. An attacker could exploit this to bypass security policies to load certain resources. (CVE-2010-0182)
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 9.10
- firefox-3.5 - 3.5.9+nobinonly-0ubuntu0.9.10.1
- xulrunner-1.9.1 - 220.127.116.11+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.