USN-645-1: Firefox and xulrunner vulnerabilities

Ubuntu Security Notice USN-645-1

24th September, 2008

firefox, firefox-3.0, xulrunner-1.9 vulnerabilities

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

  • Ubuntu 8.04 LTS
  • Ubuntu 7.10
  • Ubuntu 7.04

Software description

  • firefox
  • firefox-3.0
  • xulrunner-1.9

Details

Justin Schuh, Tom Cross and Peter Williams discovered errors in the
Firefox URL parsing routines. If a user were tricked into opening a
crafted hyperlink, an attacker could overflow a stack buffer and
execute arbitrary code. (CVE-2008-0016)

It was discovered that the same-origin check in Firefox could be
bypassed. If a user were tricked into opening a malicious website,
an attacker may be able to execute JavaScript in the context of a
different website. (CVE-2008-3835)

Several problems were discovered in the JavaScript engine. This
could allow an attacker to execute scripts from page content with
chrome privileges. (CVE-2008-3836)

Paul Nickerson discovered Firefox did not properly process mouse
click events. If a user were tricked into opening a malicious web
page, an attacker could move the content window, which could
potentially be used to force a user to perform unintended drag and
drop operations. (CVE-2008-3837)

Several problems were discovered in the browser engine. This could
allow an attacker to execute code with chrome privileges.
(CVE-2008-4058, CVE-2008-4059, CVE-2008-4060)

Drew Yao, David Maciejak and other Mozilla developers found several
problems in the browser engine of Firefox. If a user were tricked
into opening a malicious web page, an attacker could cause a denial
of service or possibly execute arbitrary code with the privileges
of the user invoking the program. (CVE-2008-4061, CVE-2008-4062,
CVE-2008-4063, CVE-2008-4064)

Dave Reed discovered a flaw in the JavaScript parsing code when
processing certain BOM characters. An attacker could exploit this
to bypass script filters and perform cross-site scripting attacks.
(CVE-2008-4065)

Gareth Heyes discovered a flaw in the HTML parser of Firefox. If a
user were tricked into opening a malicious web page, an attacker
could bypass script filtering and perform cross-site scripting
attacks. (CVE-2008-4066)

Boris Zbarsky and Georgi Guninski independently discovered flaws in
the resource: protocol. An attacker could exploit this to perform
directory traversal, read information about the system, and prompt
the user to save information in a file. (CVE-2008-4067,
CVE-2008-4068)

Billy Hoffman discovered a problem in the XBM decoder. If a user were
tricked into opening a malicious web page or XBM file, an attacker
may be able to cause a denial of service via application crash.
(CVE-2008-4069)

Update instructions

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

Ubuntu 8.04 LTS:
firefox-3.0 3.0.2+build6+nobinonly-0ubuntu0.8.04.1
xulrunner-1.9 1.9.0.2+build6+nobinonly-0ubuntu0.8.04.1
Ubuntu 7.10:
firefox 2.0.0.17+1nobinonly-0ubuntu0.7.10
Ubuntu 7.04:
firefox 2.0.0.17+0nobinonly-0ubuntu0.7.4

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

After a standard system upgrade you need to restart Firefox and any
applications that use xulrunner, such as Epiphany, to effect the
necessary changes.

References

CVE-2008-0016, CVE-2008-3835, CVE-2008-3836, CVE-2008-3837, CVE-2008-4058, CVE-2008-4059, CVE-2008-4060, CVE-2008-4061, CVE-2008-4062, CVE-2008-4063, CVE-2008-4064, CVE-2008-4065, CVE-2008-4066, CVE-2008-4067, CVE-2008-4068, CVE-2008-4069