bash - security update

Tavis Ormandy discovered that the patch applied to fix CVE-2014-6271
released in DLA-59-1 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 Debian 6 Squeeze, these issues have been fixed in bash version 4.1-3+deb6u2