Debian Linux Security Advisory 1953-2 – cases, expat would abort with the message “error in processing external entity reference”.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/84621/dsa-1953-2.txt
Source: https://packetstormsecurity.com/files/84621/Debian-Linux-Security-Advisory-1953-2.html