USN-997-1: Firefox and Xulrunner vulnerabilities

20 October 2010

firefox, firefox-3.0, firefox-3.5, xulrunner-1.9.1, xulrunner-1.9.2 vulnerabilities

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

  • Ubuntu 10.10
  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 9.04
  • Ubuntu 8.04 LTS

Summary

Firefox could be made to run programs as your login if it opened a specially crafted file.

Software Description

  • firefox - safe and easy web browser from Mozilla
  • xulrunner-1.9.2 - XUL + XPCOM application runner
  • firefox-3.5 - safe and easy web browser from Mozilla
  • xulrunner-1.9.1 - XUL + XPCOM application runner
  • firefox-3.0 - safe and easy web browser from Mozilla

Details

Paul Nickerson, Jesse Ruderman, Olli Pettay, Igor Bukanov, Josh Soref, Gary Kwong, Martijn Wargers, Siddharth Agarwal and Michal Zalewski discovered various flaws in the browser engine. An attacker could exploit this to crash the browser or possibly run arbitrary code as the user invoking the program. (CVE-2010-3175, CVE-2010-3176)

Alexander Miller, Sergey Glazunov, and others discovered several flaws in the JavaScript engine. An attacker could exploit this to crash the browser or possibly run arbitrary code as the user invoking the program. (CVE-2010-3179, CVE-2010-3180, CVE-2010-3183)

Robert Swiecki discovered that Firefox did not properly validate Gopher URLs. If a user were tricked into opening a crafted file via Gopher, an attacker could possibly run arbitrary JavaScript. (CVE-2010-3177)

Eduardo Vela Nava discovered that Firefox could be made to violate the same-origin policy by using modal calls with JavaScript. An attacker could exploit this to steal information from another site. (CVE-2010-3178)

Dmitri GribenkoDmitri Gribenko discovered that Firefox did not properly setup the LD_LIBRARY_PATH environment variable. A local attacker could exploit this to execute arbitrary code as the user invoking the program. (CVE-2010-3182)

Update instructions

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

Ubuntu 10.10
abrowser - 3.6.11+build3+nobinonly-0ubuntu0.10.10.1
firefox - 3.6.11+build3+nobinonly-0ubuntu0.10.10.1
xulrunner-1.9.2 - 1.9.2.11+build3+nobinonly-0ubuntu0.10.10.1
Ubuntu 10.04 LTS
abrowser - 3.6.11+build3+nobinonly-0ubuntu0.10.04.1
firefox - 3.6.11+build3+nobinonly-0ubuntu0.10.04.1
xulrunner-1.9.2 - 1.9.2.11+build3+nobinonly-0ubuntu0.10.04.1
Ubuntu 9.10
firefox-3.5 - 3.6.11+build3+nobinonly-0ubuntu0.9.10.1
xulrunner-1.9.1 - 1.9.1.14+build4+nobinonly-0ubuntu0.9.10.1
xulrunner-1.9.2 - 1.9.2.11+build3+nobinonly-0ubuntu0.9.10.1
Ubuntu 9.04
abrowser - 3.6.11+build3+nobinonly-0ubuntu0.9.04.1
firefox-3.0 - 3.6.11+build3+nobinonly-0ubuntu0.9.04.1
xulrunner-1.9.2 - 1.9.2.11+build3+nobinonly-0ubuntu0.9.04.1
Ubuntu 8.04 LTS
firefox-3.0 - 3.6.11+build3+nobinonly-0ubuntu0.8.04.1
xulrunner-1.9.2 - 1.9.2.11+build3+nobinonly-0ubuntu0.8.04.1

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

After a standard system update you need to restart Firefox and any applications that use Xulrunner to make all the necessary changes.

References