CVE-2020-24606

Summary:

Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF.

Reference Links(if available):

http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_9.patch

https://github.com/squid-cache/squid/security/advisories/GHSA-vvj7-xjgq-g2jg

https://www.debian.org/security/2020/dsa-4751

https://usn.ubuntu.com/4477-1/

https://lists.fedoraproject.org/archives/list/[email protected]/message/HJJDI7JQFGQLVNCKMVY64LAFMKERAOK7/

CVSS Score (if available)

v2: / MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:C

v3: / HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Links to Exploits(if available)