USN-921-1: Firefox 3.5 and Xulrunner vulnerabilities

Ubuntu Security Notice USN-921-1

9th April, 2010

firefox-3.5, xulrunner-1.9.1 vulnerabilities

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

  • Ubuntu 9.10

Software description

  • firefox-3.5
  • xulrunner-1.9.1

Details

Martijn Wargers, Josh Soref, Jesse Ruderman, and Ehsan Akhgari discovered
flaws in the browser engine 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-2010-0173, CVE-2010-0174)

It was discovered that Firefox could be made to access previously freed
memory. 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-2010-0175,
CVE-2010-0176, CVE-2010-0177)

Paul Stone discovered that Firefox could be made to change a mouse click
into a drag and drop event. If the user could be tricked into performing
this action twice on a crafted website, an attacker could execute
arbitrary JavaScript with chrome privileges. (CVE-2010-0178)

It was discovered that the XMLHttpRequestSpy module as used by the Firebug
add-on could be used to escalate privileges within the browser. If the user
had the Firebug add-on installed and were tricked into viewing a malicious
website, an attacker could potentially run arbitrary JavaScript.
(CVE-2010-0179)

Henry Sudhof discovered that an image tag could be used as a redirect to
a mailto: URL to launch an external mail handler. (CVE-2010-0181)

Wladimir Palant discovered that Firefox did not always perform security
checks on XML content. An attacker could exploit this to bypass security
policies to load certain resources. (CVE-2010-0182)

Update instructions

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

Ubuntu 9.10:
xulrunner-1.9.1 1.9.1.9+nobinonly-0ubuntu0.9.10.1
firefox-3.5 3.5.9+nobinonly-0ubuntu0.9.10.1

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.

References

CVE-2010-0173, CVE-2010-0174, CVE-2010-0175, CVE-2010-0176, CVE-2010-0177, CVE-2010-0178, CVE-2010-0179, CVE-2010-0181, CVE-2010-0182