Debian Linux Security Advisory 2111-1 – Phil Oester discovered that squid3, a fully featured Web Proxy cache, is prone to a denial of service attack via a specially crafted request that includes empty strings.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/94030/dsa-2111-1.txt
Source: https://packetstormsecurity.com/files/94030/Debian-Linux-Security-Advisory-2111-1.html