Vulnerability Details : 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.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2020-24606
Probability of exploitation activity in the next 30 days: 0.99%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 82 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-24606
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
7.1
|
HIGH | AV:N/AC:M/Au:N/C:N/I:N/A:C |
8.6
|
6.9
|
[email protected] |
|
8.6
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
3.9
|
4.0
|
[email protected] |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
[email protected] |
CWE ids for CVE-2020-24606
-
The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.Assigned by: [email protected] (Primary)
References for CVE-2020-24606
-
https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html
Mailing List;Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
Mailing List;Third Party Advisory
-
https://www.debian.org/security/2020/dsa-4751
Third Party Advisory
-
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_9.patch
Patch;Vendor Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/BE6FKUN7IGTIR2MEEMWYDT7N5EJJLZI2/
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/BMTFLVB7GLRF2CKGFPZ4G4R5DIIPHWI3/
Third Party Advisory
-
https://usn.ubuntu.com/4477-1/
Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20210226-0006/
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/HJJDI7JQFGQLVNCKMVY64LAFMKERAOK7/
Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20210226-0007/
Broken Link
-
https://github.com/squid-cache/squid/security/advisories/GHSA-vvj7-xjgq-g2jg
Third Party Advisory
-
https://usn.ubuntu.com/4551-1/
Third Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
Mailing List;Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20210219-0007/
Third Party Advisory
Products affected by CVE-2020-24606
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*