Debian: DSA-3032-1 Critical: Bash Environment Exploit Disclosure

Stephane Chazelas discovered a vulnerability in bash, the GNU
Bourne-Again Shell, related to how environment variables are
processed. In many common configurations, this vulnerability is
exploitable over the network, especially if bash has been configured
as the system shell.

For the stable distribution (wheezy), this problem has been fixed in
version 4.2+dfsg-0.1+deb7u1.

We recommend that you upgrade your bash packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/