Ubuntu Security Notice USN-877-1
7th January, 2010
firefox-3.0, xulrunner-1.9 regression
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 9.04
- Ubuntu 8.10
- Ubuntu 8.04 LTS
USN-873-1 fixed vulnerabilities in Firefox and Xulrunner. The upstream
changes introduced a regression when using NTLM authentication. This update
fixes the problem and adds additional stability fixes.
We apologize for the inconvenience.
Original advisory details:
Jesse Ruderman, Josh Soref, Martijn Wargers, Jose Angel, Olli Pettay, and
of Firefox. If a user were tricked into viewing a malicious website, a
remote attacker could cause a denial of service or possibly execute
arbitrary code with the privileges of the user invoking the program.
(CVE-2009-3979, CVE-2009-3981, CVE-2009-3986)
Takehiro Takahashi discovered flaws in the NTLM implementation in Firefox.
If an NTLM authenticated user visited a malicious website, a remote
attacker could send requests to other applications, authenticated as the
Jonathan Morgan discovered that Firefox did not properly display SSL
indicators under certain circumstances. This could be used by an attacker
to spoof an encrypted page, such as in a phishing attack. (CVE-2009-3984)
Jordi Chancel discovered that Firefox did not properly display invalid URLs
for a blank page. If a user were tricked into accessing a malicious
website, an attacker could exploit this to spoof the location bar, such as
in a phishing attack. (CVE-2009-3985)
The problem can be corrected by updating your system to the following package version:
- Ubuntu 9.04:
- firefox-3.0 3.0.17+nobinonly-0ubuntu0.9.04.1
- abrowser 3.0.17+nobinonly-0ubuntu0.9.04.1
- xulrunner-1.9 220.127.116.11+nobinonly-0ubuntu0.9.04.1
- Ubuntu 8.10:
- firefox-3.0 3.0.17+nobinonly-0ubuntu0.8.10.1
- abrowser 3.0.17+nobinonly-0ubuntu0.8.10.1
- xulrunner-1.9 18.104.22.168+nobinonly-0ubuntu0.8.10.1
- Ubuntu 8.04 LTS:
- firefox-3.0 3.0.17+nobinonly-0ubuntu0.8.04.1
- xulrunner-1.9 22.214.171.124+nobinonly-0ubuntu0.8.04.1
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 to effect the necessary changes.