squid3 - security update

Matthew Daley discovered that Squid3, a fully featured web proxy cache,
did not properly perform input validation in request parsing. A remote
attacker could use this flaw to mount a denial of service by sending
crafted Range requests.

For the stable distribution (wheezy), this problem has been fixed in
version 3.1.20-2.2+deb7u2.

For the unstable distribution (sid), this problem will be fixed soon.

We recommend that you upgrade your squid3 packages.