CVE-2014-1567

Vulnerabilidad de uso después de liberación en DirectionalityUtils.cpp en Mozilla Firefox anterior a 32.0, Firefox ESR 24.x anterior a 24.8 y 31.x anterior a 31.1 y Thunderbird 24.x anterior a 24.8 y 31.x anterior a 31.1 permite a atacantes remotos ejecutar código arbitrario a través de texto que no se maneja debidamente durante la interacción entre la resolución de la direccionalidad y el diseño.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mozilla Firefox. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the handling of bi-directional unicode text. The issue lies in the failure to properly handle text that has its bi-directional character type changed. An attacker can leverage this vulnerability to execute code under the context of the current process.

Jan de Mooij, Christian Holler, Karl Tomlinson, Randell Jesup, Gary Kwong, Jesse Ruderman and JW Wang discovered multiple memory safety issues in Thunderbird. If a user were tricked in to opening a specially crafted message with scripting enabled, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. Abhishek Arya discovered a use-after-free during DOM interactions with SVG. If a user were tricked in to opening a specially crafted message with scripting enabled, an attacker could potentially exploit this to cause a denial of service via application crash or execute arbitrary code with the privileges of the user invoking Thunderbird. Various other issues were also addressed.