CVE-2015-4490

Vulnerabilidad en la función nsCSPHostSrc::permits en dom/security/nsCSPUtils.cpp en Mozilla Firefox en versiones anteriores a 40.0, no implementa excepciones de nivel 2 del Content Security Policy para el blob, los datos y el sistema de archivos de esquemas URL durante la búsqueda de coincidencia entre expresiones de código y el comodín, lo que podría facilitar a atacantes remotos realizar ataques de XSS mediante el aprovechamiento del comportamiento inesperado del cumplimiento de políticas.

USN-2702-1 fixed vulnerabilities in Firefox. This update provides the corresponding updates for Ubufox. Gary Kwong, Christian Holler, Byron Campen, Tyson Smith, Bobby Holley, Chris Coulson, and Eric Rahm 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 with the privileges of the user invoking Firefox. Aki Helin discovered an out-of-bounds read when playing malformed MP3 content in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to obtain sensitive information, cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. Various other issues were also addressed.