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.

Bash is an sh-compatible command language interpreter that executes commands read from the standard input or from a file. Bash also incorporates useful features from the Korn and C shells (ksh and csh).

bash on Debian Linux

This check tests the installed software version using the apt package manager.

• http://www.debian.org/security/2014/dsa-3032.html

---

Updated on 2015-03-25