USN-2372-1: Firefox vulnerabilities

14 October 2014

firefox vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS

Summary

Firefox could be made to crash or run programs as your login if it opened a malicious website.

Software Description

  • firefox - Mozilla Open Source web browser

Details

Bobby Holley, Christian Holler, David Bolter, Byron Campen, Jon Coppeard, Carsten Book, Martijn Wargers, Shih-Chiang Chien, Terrence Cole and Jeff Walden 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-2014-1574, CVE-2014-1575)

Atte Kettunen discovered a buffer overflow during CSS manipulation. If a user were tricked in to opening a specially crafted website, 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 Firefox. (CVE-2014-1576)

Holger Fuhrmannek discovered an out-of-bounds read with Web Audio. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to steal sensitive information. (CVE-2014-1577)

Abhishek Arya discovered an out-of-bounds write when buffering WebM video in some circumstances. If a user were tricked in to opening a specially crafted website, 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 Firefox. (CVE-2014-1578)

Michal Zalewski discovered that memory may not be correctly initialized when rendering a malformed GIF in to a canvas in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to steal sensitive information. (CVE-2014-1580)

A use-after-free was discovered during text layout in some circumstances. If a user were tricked in to opening a specially crafted website, 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 Firefox. (CVE-2014-1581)

Patrick McManus and David Keeler discovered 2 issues that could result in certificate pinning being bypassed in some circumstances. An attacker with a fraudulent certificate could potentially exploit this conduct a man in the middle attack. (CVE-2014-1582, CVE-2014-1584)

Eric Shepherd and Jan-Ivar Bruaroey discovered issues with video sharing via WebRTC in iframes, where video continues to be shared after being stopped and navigating to a new site doesn’t turn off the camera. An attacker could potentially exploit this to access the camera without the user being aware. (CVE-2014-1585, CVE-2014-1586)

Boris Zbarsky discovered that webapps could use the Alarm API to read the values of cross-origin references. If a user were tricked in to installing a specially crafter webapp, an attacker could potentially exploit this to bypass same-origin restrictions. (CVE-2014-1583)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04 LTS
firefox - 33.0+build2-0ubuntu0.14.04.1
Ubuntu 12.04 LTS
firefox - 33.0+build2-0ubuntu0.12.04.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart Firefox to make all the necessary changes.

References