CVE-2015-4497 – Mozilla Firefox nsIPresShell Use-After-Free Remote Code Execution Vulnerability

https://notcve.org/view.php?id=CVE-2015-4497

Use-after-free vulnerability in the CanvasRenderingContext2D implementation in Mozilla Firefox before 40.0.3 and Firefox ESR 38.x before 38.2.1 allows remote attackers to execute arbitrary code by leveraging improper interaction between resize events and changes to Cascading Style Sheets (CSS) token sequences for a CANVAS element. Vulnerabilidad de uso después de liberación de memoria en la implementación de CanvasRenderingContext2D en Mozilla Firefox en versiones anteriores a 40.0.3 y Firefox ESR 38.x en versiones anteriores a 38.2.1, permite a atacantes remotos ejecutar código arbitrario mediante el aprovechamiento de la interacción inadecuada entre los eventos de cambio de tamaño y los cambios en las secuencias de token Cascading Style Sheets (CSS) para un elemento CANVAS. 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 usage of nsIPresShell. By manipulating a document's elements an attacker can force a dangling pointer to be reused after it has been freed. • http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00013.html http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html http://lists.opensuse.org/opensuse-updates/2015-09/msg00000.html http://rhn.redhat.com/errata/RHSA-2015-1693.html http://www.debian.org/security/2015/dsa-3345 http://www.mozilla.org/security/announce/2015/mfsa2015-94.html http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html http://www.securityfocus.com/bid/76502 http&# • CWE-416: Use After Free •