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[USN-1367-2] Firefox vulnerability

Posted on 17 February 2012
Ubuntu Security

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Ubuntu Security Notice USN-1367-2
February 17, 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:

Firefox could be made to crash or run programs as your login if it opened=
a
specially crafted file.

Software Description:
- firefox: Mozilla Open Source web browser

Details:

USN-1367-1 fixed vulnerabilities in libpng. This provides the correspondi=
ng
update for Firefox.

Original advisory details:
=20
Jueri Aedla discovered that libpng did not properly verify the size used=

when allocating memory during chunk decompression. If a user or automate=
d
system using libpng were tricked into opening a specially crafted image,=

an attacker could exploit this to cause a denial of service or execute
code with the privileges of the user invoking the program. (CVE-2011-302=
6)

Update instructions:

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

Ubuntu 11.10:
firefox 10.0.2+build1-0ubuntu0.11.10.1

Ubuntu 11.04:
firefox 10.0.2+build1-0ubuntu0.11.04.1

Ubuntu 10.10:
firefox 10.0.2+build1-0ubuntu0.10.10.1

Ubuntu 10.04 LTS:
firefox 10.0.2+build1-0ubuntu0.10.04.1

After a standard system update you need to restart Firefox to make all th=
e
necessary changes.

References:
http://www.ubuntu.com/usn/usn-1367-2
http://www.ubuntu.com/usn/usn-1367-1
CVE-2011-3026, https://launchpad.net/bugs/933293

Package Information:
https://launchpad.net/ubuntu/+source/firefox/10.0.2+build1-0ubuntu0.11.=
10.1
https://launchpad.net/ubuntu/+source/firefox/10.0.2+build1-0ubuntu0.11.=
04.1
https://launchpad.net/ubuntu/+source/firefox/10.0.2+build1-0ubuntu0.10.=
10.1
https://launchpad.net/ubuntu/+source/firefox/10.0.2+build1-0ubuntu0.10.=
04.1




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