Security Information / 2014 / Security Information -- DSA-3035-1 bash

Debian Security Advisory

DSA-3035-1 bash -- security update

Date Reported:

25 Sep 2014

Affected Packages:

bash

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 762760, Bug 762761.
In Mitre's CVE dictionary: CVE-2014-7169.

More information:

Tavis Ormandy discovered that the patch applied to fix CVE-2014-6271 released in DSA-3032-1 for bash, the GNU Bourne-Again Shell, was incomplete and could still allow some characters to be injected into another environment (CVE-2014-7169). With this update prefix and suffix for environment variable names which contain shell functions are added as hardening measure.

Additionally two out-of-bounds array accesses in the bash parser are fixed which were revealed in Red Hat's internal analysis for these issues and also independently reported by Todd Sabin.

For the stable distribution (wheezy), these problems have been fixed in version 4.2+dfsg-0.1+deb7u3.

We recommend that you upgrade your bash packages.