iceweasel - security update

Multiple security issues have been found in Iceweasel, Debian’s version
of the Mozilla Firefox web browser: Multiple memory safety errors and
buffer overflows may lead to the execution of arbitrary code or denial
of service.

For the stable distribution (wheezy), these problems have been fixed in
version 24.6.0esr-1~deb7u1.

For the unstable distribution (sid), these problems have been fixed in
version 30.0-1.

We recommend that you upgrade your iceweasel packages.