squid is vulnerable to denial of service (DoS). The vulnerability exists due to an incorrect input validation, causing a heap-based buffer overflow that can result in Denial of Service to all clients using the proxy.
www.squid-cache.org/Advisories/SQUID-2019_8.txt
www.squid-cache.org/Versions/v4/changesets/squid-4-fbbdf75efd7a5cc244b4886a9d42ea458c5a3a73.patch
bugzilla.suse.com/show_bug.cgi?id=1156329
github.com/squid-cache/squid/pull/275
lists.debian.org/debian-lts-announce/2020/07/msg00009.html
lists.fedoraproject.org/archives/list/[email protected]/message/MTM74TU2BSLT5B3H4F3UDW53672NVLMC/
lists.fedoraproject.org/archives/list/[email protected]/message/UEMOYTMCCFWK5NOXSXEIH5D2VGWVXR67/
usn.ubuntu.com/4213-1/
usn.ubuntu.com/4446-1/
www.debian.org/security/2020/dsa-4682