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USN-1011-1: Firefox vulnerability

28 October 2010

Firefox could be made to run programs as your login if it opened a specially crafted web page.



  • firefox - safe and easy web browser from Mozilla
  • firefox-3.0 - safe and easy web browser from Mozilla
  • firefox-3.5 - safe and easy web browser from Mozilla


Morten Krakvik discovered a heap-based buffer overflow in Firefox. If a
user were tricked into navigating to a malicious site, an attacker could
cause a denial of service or possibly execute arbitrary code as the user
invoking the program.

Update instructions

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

Ubuntu 9.10
Ubuntu 8.04
Ubuntu 10.10
Ubuntu 10.04

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


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