USN-717-2: Firefox vulnerabilities

10 February 2009

firefox-3.0 vulnerabilities

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

  • Ubuntu 7.10

Software Description

  • firefox


A flaw was discovered in the browser engine when restoring closed tabs. If a user were tricked into restoring a tab to a malicious website with form input controls, an attacker could steal local files on the user’s system. (CVE-2009-0355)

Wladimir Palant discovered that Firefox did not restrict access to cookies in HTTP response headers. If a user were tricked into opening a malicious web page, a remote attacker could view sensitive information. (CVE-2009-0357)

Update instructions

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

Ubuntu 7.10
firefox -

To update your system, please follow these instructions:

After a standard system upgrade you need to restart Firefox to effect the necessary changes.