Affected: Mozilla Thunderbird, Mozilla Firefox ESR, Mozilla Firefox

Memory safety bugs were reported in Firefox 49 and Firefox ESR 45.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 45.5, Firefox ESR < 45.5, and Firefox < 50.

Affected: Ubuntu:14.04:LTS: firefox, Ubuntu:16.04:LTS: firefox

Christian Holler, Andrew McCreight, Dan Minor, Tyson Smith, Jon Coppeard, Jan-Ivar Bruaroey, Jesse Ruderman, Markus Stange, Olli Pettay, Ehsan Akhgari, Gary Kwong, Tooru Fujisawa, and Randell Jesup discovered multiple memory safety issues in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5289, CVE-2016-5290)

A same-origin policy bypass was discovered with local HTML files in some circumstances. An attacker could potentially exploit this to obtain sensitive information. (CVE-2016-5291)

A crash was discovered when parsing URLs in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to execute arbitrary code. (CVE-2016-5292)

A heap buffer-overflow was discovered in Cairo when processing SVG content. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5296)

An error was discovered in argument length checking in Javascript. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code. (CVE-2016-5297)

An integer overflow was discovered in the Expat library. If a user were tric…