USN-877-1: Firefox 3.0 and Xulrunner 1.9 regression

Releases

• Ubuntu 9.04
• Ubuntu 8.10
• Ubuntu 8.04

Packages

• firefox-3.0 -
• xulrunner-1.9 -

Details

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
David James discovered several flaws in the browser and JavaScript engines
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
user. (CVE-2009-3983)

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)

Update instructions

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

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 - 1.9.0.17+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 - 1.9.0.17+nobinonly-0ubuntu0.8.10.1

Ubuntu 8.04

• firefox-3.0 - 3.0.17+nobinonly-0ubuntu0.8.04.1
• xulrunner-1.9 - 1.9.0.17+nobinonly-0ubuntu0.8.04.1

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

References

• https://launchpad.net/bugs/504516