Debian Security Advisory 1149-1 – Tavis Ormandy from the Google Security Team discovered a missing boundary check in ncompress, the original Lempel-Ziv compress and uncompress programs, which allows a specially crafted datastream to underflow a buffer with attacker controlled data.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/49248/dsa-1149-1.txt
Source: https://packetstormsecurity.com/files/49248/Debian-Linux-Security-Advisory-1149-1.html