Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

Affected: Ubuntu:14.04:LTS: firefox

Christian Holler, David Major, Jesse Ruderman, Tyson Smith, Boris Zbarsky, Randell Jesup, Olli Pettay, Karl Tomlinson, Jeff Walden, Gary Kwong, Andrew McCreight, Georg Fritzsche, and Carsten Book 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. (CVE-2015-4513, CVE-2015-4514)

Tim Brown discovered that Firefox discloses the hostname during NTLM authentication in some circumstances. If a user were tricked in to opening a specially crafted website with NTLM v1 enabled, an attacker could exploit this to obtain sensitive information. (CVE-2015-4515)

Mario Heiderich and Frederik Braun discovered that CSP could be bypassed in reader mode in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to conduct cross-site scripting (XSS) attacks. (CVE-2015-4518)

Tyson Smith and David Keeler discovered a use-after-poison and buffer overflow in NSS. 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. (CVE-2015-7181, CVE-2015-7182)

Ryan Sleevi discovered an integer overflow in NSPR. If a user we…