CVE-2020-24606

Description

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.

References

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/

https://lists.fedoraproject.org/archives/list/[email protected]/message/BMTFLVB7GLRF2CKGFPZ4G4R5DIIPHWI3/

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/BE6FKUN7IGTIR2MEEMWYDT7N5EJJLZI2/

https://usn.ubuntu.com/4551-1/

https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html

https://security.netapp.com/advisory/ntap-20210219-0007/

https://security.netapp.com/advisory/ntap-20210226-0006/

https://security.netapp.com/advisory/ntap-20210226-0007/

Details

Risk Information

CVSS v2

CVSS v3