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.

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-3035.html

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Updated on 2015-03-25