Please Install the Updated Packages.

USN-1890-1 fixed vulnerabilities in Firefox. This update introduced a regression which sometimes resulted in Firefox using the wrong network proxy settings. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Multiple memory safety issues were discovered in Firefox. If the user were tricked into opening a specially crafted page, an attacker could possibly exploit these to cause a denial of service via application crash, or potentially execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2013-1682, CVE-2013-1683) Abhishek Arya discovered multiple use-after-free bugs. If the user were tricked into opening a specially crafted page, an attacker could possibly exploit these to execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2013-1684, CVE-2013-1685, CVE-2013-1686) Mariusz Mlynski discovered that user defined code within the XBL scope of an element could be made to bypass System Only Wrappers (SOW). An attacker could potentially exploit this to execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2013-1687) Mariusz Mlynski discovered that the profiler user interface incorrectly handled data from the profiler. If the user examined profiler output on a specially crafted page, an attacker could potentially exploit this to execute arbitrary code with the privileges of the user invoking Firefox. (CVE-2013-1688) A crash was discovered when reloading a page that contained content using the onreadystatechange event. An attacker could potentially exploit this to execute arbitrary code with the privileges of the user invoking Firefox (CVE-2013-1690) Johnathan Kuskos discovered that Firefox sent data in the body of XMLHttpRequest HEAD requests. An attacker could exploit this to conduct Cross-Site Request Forgery (CSRF) attacks. (CVE-2013-1692) Paul Stone discovered a timing flaw in the processing of SVG images with filters. An attacker could exploit this to view sensitive information. (CVE-2013-1693) Boris Zbarsky discovered a flaw in PreserveWrapper. An attacker could potentially exploit this to cause a denial of service via application crash, or execute code with the privileges of the user invoking Firefox. (CVE-2013-1694) Bob Owen discovered that a sandboxed iframe could use a frame element to bypass its own restrictions. (CVE-2013-1695) Buclin discovered that the X-Frame-Options header is ignored in multi-part respo ... Description truncated, for more information please check the Reference URL

firefox on Ubuntu 13.04 , Ubuntu 12.10 , Ubuntu 12.04 LTS