CVE-2016-1526 – graphite2: Out-of-bounds read vulnerability in TfUtil:LocaLookup

https://notcve.org/view.php?id=CVE-2016-1526

The TtfUtil:LocaLookup function in TtfUtil.cpp in Libgraphite in Graphite 2 1.2.4, as used in Mozilla Firefox before 43.0 and Firefox ESR 38.x before 38.6.1, incorrectly validates a size value, which allows remote attackers to obtain sensitive information or cause a denial of service (out-of-bounds read and application crash) via a crafted Graphite smart font. La función TtfUtil:LocaLookup en TtfUtil.cpp en Libgraphite en Graphite 2 1.2.4, como se utiliza en Mozilla Firefox en versiones anteriores a 43.0 y Firefox ESR 38.x en versiones anteriores a 38.6.1, valida incorrectamente un valor de tamaño, lo que permite a atacantes remotos obtener información sensible o causar una denegación de servicio (lectura fuera de rango y caída de aplicación) a través de una fuente inteligente Graphite. A vulnerability has been discovered in Graphite2. An attacker able to trick an unsuspecting user into opening specially crafted font files in an application using Graphite2 could exploit these flaws to cause the application to crash or, potentially, execute arbitrary code with the privileges of the application. • http://blog.talosintel.com/2016/02/vulnerability-spotlight-libgraphite.html http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177520.html http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184623.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00052.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00058.html http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00088.html http://rhn.redhat.com/errata/RHSA-2016-0594.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-125: Out-of-bounds Read CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •