Ubuntu Update for firefox regression USN-546-2

Ubuntu Update for Linux kernel vulnerabilities USN-546-2
Please Install the Updated Packages.
USN-546-1 fixed vulnerabilities in Firefox. The upstream update included a faulty patch which caused the drawImage method of the canvas element to fail. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that Firefox incorrectly associated redirected sites as the origin of &quot jar:&quot contents. A malicious web site could exploit this to modify or steal confidential data (such as passwords) from other web sites. (CVE-2007-5947) Various flaws were discovered in the layout and JavaScript engines. By tricking a user into opening a malicious web page, an attacker could execute arbitrary code with the user's privileges. (CVE-2007-5959) Gregory Fleischer discovered that it was possible to use JavaScript to manipulate Firefox's Referer header. A malicious web site could exploit this to conduct cross-site request forgeries against sites that relied only on Referer headers for protection from such attacks. (CVE-2007-5960)
firefox regression on Ubuntu 6.10 , Ubuntu 7.04 , Ubuntu 7.10