==========================================================================
Ubuntu Security Notice USN-2380-1
October 09, 2014
bash vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 14.04 LTS
– Ubuntu 12.04 LTS
– Ubuntu 10.04 LTS
Summary:
Several security issues were fixed in Bash.
Software Description:
– bash: GNU Bourne Again SHell
Details:
Michal Zalewski discovered that Bash incorrectly handled parsing certain
function definitions. If an attacker were able to create an environment
variable containing a function definition with a very specific name, these
issues could possibly be used to bypass certain environment restrictions
and execute arbitrary code. (CVE-2014-6277, CVE-2014-6278)
Please note that the previous Bash security update, USN-2364-1, includes
a hardening measure that prevents these issues from being used in a
Shellshock attack.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
bash 4.3-7ubuntu1.5
Ubuntu 12.04 LTS:
bash 4.2-2ubuntu2.6
Ubuntu 10.04 LTS:
bash 4.1-2ubuntu3.5
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2380-1
CVE-2014-6277, CVE-2014-6278
Package Information:
https://launchpad.net/ubuntu/+source/bash/4.3-7ubuntu1.5
https://launchpad.net/ubuntu/+source/bash/4.2-2ubuntu2.6
https://launchpad.net/ubuntu/+source/bash/4.1-2ubuntu3.5
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