Mozilla Firefox is an open source web browser. XULRunner provides the XUL Runtime environment for Mozilla Firefox.
Several flaws were found in the processing of malformed web content. A web page containing malicious content could cause Firefox to crash or, potentially, execute arbitrary code with the privileges of the user running Firefox. (CVE-2014-1493, CVE-2014-1510, CVE-2014-1511, CVE-2014-1512, CVE-2014-1513, CVE-2014-1514)
Several information disclosure flaws were found in the way Firefox processed malformed web content. An attacker could use these flaws to gain access to sensitive information such as cross-domain content or protected memory addresses or, potentially, cause Firefox to crash. (CVE-2014-1497, CVE-2014-1508, CVE-2014-1505)
A memory corruption flaw was found in the way Firefox rendered certain PDF files. An attacker able to trick a user into installing a malicious extension could use this flaw to crash Firefox or, potentially, execute arbitrary code with the privileges of the user running Firefox. (CVE-2014-1509)
Red Hat would like to thank the Mozilla project for reporting these issues. Upstream acknowledges Benoit Jacob, Olli Pettay, Jan Varga, Jan de Mooij, Jesse Ruderman, Dan Gohman, Christoph Diehl, Atte Kettunen, Tyson Smith, Jesse Schwartzentruber, John Thomson, Robert O'Callahan, Mariusz Mlynski, Juri Aedla, George Hotz, and the security research firm VUPEN as the original reporters of these issues.
For technical details regarding these flaws, refer to the Mozilla security advisories for Firefox 24.4.0 ESR. You can find a link to the Mozilla advisories in the References section of this erratum.
All Firefox users should upgrade to these updated packages, which contain Firefox version 24.4.0 ESR, which corrects these issues. After installing the update, Firefox must be restarted for the changes to take effect.