CVE-2021-28662

medium

Description

An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in benign network traffic.

References

Advisories
More

https://www.debian.org/security/2021/dsa-4924

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/

https://github.com/squid-cache/squid/security/advisories/GHSA-jjq6-mh2h-g39h

https://github.com/squid-cache/squid/commit/051824924c709bd6162a378f746fb859454c674e

http://www.openwall.com/lists/oss-security/2023/10/11/3

http://seclists.org/fulldisclosure/2023/Oct/14

https://euvd.enisa.europa.eu/vulnerability/EUVD-2021-15326

http://www.squid-cache.org/Versions/v6/changesets/squid-6-051824924c709bd6162a378f746fb859454c674e.patch

Details

Source: Mitre, NVD

Published: 2021-05-27

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H