CVE-2020-24606

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.6 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
mitreCNA
8.6 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AC:L/AV:N/A:H/C:N/I:N/PR:N/S:C/UI:N
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 90%
VendorProductVersion
squid-cachesquid
3.0 ≤
𝑥
< 4.13
squid-cachesquid
5.0.1 ≤
𝑥
< 5.0.4
canonicalubuntu_linux
16.04
canonicalubuntu_linux
18.04
canonicalubuntu_linux
20.04
debiandebian_linux
9.0
debiandebian_linux
10.0
opensuseleap
15.1
opensuseleap
15.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
squid
bullseye (security)
4.13-10+deb11u3
fixed
bullseye
4.13-10+deb11u3
fixed
bookworm
5.7-2+deb12u2
fixed
bookworm (security)
5.7-2+deb12u2
fixed
sid
6.12-1
fixed
trixie
6.12-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
squid
hirsute
Fixed 4.13-1ubuntu1
released
groovy
Fixed 4.13-1ubuntu1
released
focal
Fixed 4.10-1ubuntu1.2
released
bionic
dne
xenial
dne
trusty
dne
squid3
hirsute
dne
groovy
dne
focal
dne
bionic
Fixed 3.5.27-1ubuntu1.9
released
xenial
Fixed 3.5.12-1ubuntu7.15
released
trusty
dne
Common Weakness Enumeration
References
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
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://lists.debian.org/debian-lts-announce/2020/10/msg00005.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BE6FKUN7IGTIR2MEEMWYDT7N5EJJLZI2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMTFLVB7GLRF2CKGFPZ4G4R5DIIPHWI3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJJDI7JQFGQLVNCKMVY64LAFMKERAOK7/
https://security.netapp.com/advisory/ntap-20210219-0007/
https://security.netapp.com/advisory/ntap-20210226-0006/
https://security.netapp.com/advisory/ntap-20210226-0007/
https://usn.ubuntu.com/4477-1/
https://usn.ubuntu.com/4551-1/
https://www.debian.org/security/2020/dsa-4751
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
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://lists.debian.org/debian-lts-announce/2020/10/msg00005.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BE6FKUN7IGTIR2MEEMWYDT7N5EJJLZI2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMTFLVB7GLRF2CKGFPZ4G4R5DIIPHWI3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJJDI7JQFGQLVNCKMVY64LAFMKERAOK7/
https://security.netapp.com/advisory/ntap-20210219-0007/
https://security.netapp.com/advisory/ntap-20210226-0006/
https://security.netapp.com/advisory/ntap-20210226-0007/
https://usn.ubuntu.com/4477-1/
https://usn.ubuntu.com/4551-1/
https://www.debian.org/security/2020/dsa-4751