An issue was discovered in Squid before 4.10. Due to incorrect buffer management, a remote client can cause a buffer overflow in a Squid instance acting as a reverse proxy.
http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2020_1.patch
http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_1.patch
http://www.squid-cache.org/Advisories/SQUID-2020_1.txt
https://usn.ubuntu.com/4289-1/
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00012.html
https://security.gentoo.org/glsa/202003-34
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00010.html
https://www.debian.org/security/2020/dsa-4682
https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
Source: MITRE
Published: 2020-02-04
Updated: 2021-07-21
Type: CWE-119
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
Base Score: 7.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Impact Score: 3.4
Exploitability Score: 3.9
Severity: HIGH