Ispravljen je sigurnosni nedostatak uočen u radu preglednika Mozilla Firefox. Udaljeni ga napadač može iskoristiti za izvođenje napada uskraćivanjem usluge i pokretanje proizvoljnog programskog koda.

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Ubuntu Security Notice USN-1360-1
February 13, 2012

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

- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS

Summary:

A security vulnerability has been fixed in Firefox.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

Andrew McCreight and Olli Pettay discovered a use-after-free vulnerability
in the XBL bindings. An attacker could exploit this to cause a denial of
service via application crash, or potentially execute code with the
privileges of the user invoking Firefox. (CVE-2012-0452)

Update instructions:

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

Ubuntu 11.10:
  firefox                         10.0.1+build1-0ubuntu0.11.10.1

Ubuntu 11.04:
  firefox                         10.0.1+build1-0ubuntu0.11.04.1

Ubuntu 10.10:
  firefox                         10.0.1+build1-0ubuntu0.10.10.1

Ubuntu 10.04 LTS:
  firefox                         10.0.1+build1-0ubuntu0.10.04.1

After a standard system update you need to restart Firefox to make all the
necessary changes.

References:
  http://www.ubuntu.com/usn/usn-1360-1
  CVE-2012-0452, https://launchpad.net/bugs/929833

Package Information:
  https://launchpad.net/ubuntu/+source/firefox/10.0.1+build1-0ubuntu0.11.10.1
  https://launchpad.net/ubuntu/+source/firefox/10.0.1+build1-0ubuntu0.11.04.1
  https://launchpad.net/ubuntu/+source/firefox/10.0.1+build1-0ubuntu0.10.10.1
  https://launchpad.net/ubuntu/+source/firefox/10.0.1+build1-0ubuntu0.10.04.1