USN-592-1: Firefox vulnerabilities

Ubuntu Security Notice USN-592-1

26th March, 2008

firefox vulnerabilities

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

  • Ubuntu 7.10
  • Ubuntu 7.04
  • Ubuntu 6.10
  • Ubuntu 6.06 LTS

Software description

  • firefox

Details

Alexey Proskuryakov, Yosuke Hasegawa and Simon Montagu discovered flaws
in Firefox's character encoding handling. If a user were tricked into
opening a malicious web page, an attacker could perform cross-site
scripting attacks. (CVE-2008-0416)

Various flaws were discovered in the JavaScript engine. By tricking
a user into opening a malicious web page, an attacker could escalate
privileges within the browser, perform cross-site scripting attacks
and/or execute arbitrary code with the user's privileges.
(CVE-2008-1233, CVE-2008-1234, CVE-2008-1235)

Several problems were discovered in Firefox which could lead to crashes
and memory corruption. If a user were tricked into opening a malicious
web page, an attacker may be able to execute arbitrary code with the
user's privileges. (CVE-2008-1236, CVE-2008-1237)

Gregory Fleischer discovered Firefox did not properly process HTTP
Referrer headers when they were sent with with requests to URLs
containing Basic Authentication credentials with empty usernames. An
attacker could exploit this vulnerability to perform cross-site request
forgery attacks. (CVE-2008-1238)

Peter Brodersen and Alexander Klink reported that default the setting in
Firefox for SSL Client Authentication allowed for users to be tracked
via their client certificate. The default has been changed to prompt
the user each time a website requests a client certificate.
(CVE-2007-4879)

Gregory Fleischer discovered that web content fetched via the jar
protocol could use Java LiveConnect to connect to arbitrary ports on
the user's machine due to improper parsing in the Java plugin. If a
user were tricked into opening malicious web content, an attacker may be
able to access services running on the user's machine. (CVE-2008-1195,
CVE-2008-1240)

Chris Thomas discovered that Firefox would allow an XUL popup from an
unselected tab to display in front of the selected tab. An attacker
could exploit this behavior to spoof a login prompt and steal the user's
credentials. (CVE-2008-1241)

Update instructions

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

Ubuntu 7.10:
firefox 2.0.0.13+1nobinonly-0ubuntu0.7.10
Ubuntu 7.04:
firefox 2.0.0.13+0nobinonly-0ubuntu0.7.4
Ubuntu 6.10:
firefox 2.0.0.13+0nobinonly-0ubuntu0.6.10
Ubuntu 6.06 LTS:
firefox 1.5.dfsg+1.5.0.15~prepatch080323a-0ubuntu1

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

After a standard system upgrade you need to restart firefox to effect
the necessary changes.

References

CVE-2007-4879, CVE-2008-0416, CVE-2008-1195, CVE-2008-1233, CVE-2008-1234, CVE-2008-1235, CVE-2008-1236, CVE-2008-1237, CVE-2008-1238, CVE-2008-1240, CVE-2008-1241