CVE-2021-28652

MEDIUM

Squid < 4.15 and 5.x < 5.0.6 - Authenticated Denial of Service via Cache Manager API Short Query String

Title source: llm
STIX 2.1

Description

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege.

References (8)

Core 8
Core References
Third Party Advisory vendor-advisory
https://www.debian.org/security/2021/dsa-4924
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2021/06/msg00014.html
Mailing List, Third Party Advisory mailing-list
http://www.openwall.com/lists/oss-security/2023/10/11/3
Mailing List, Third Party Advisory mailing-list
http://seclists.org/fulldisclosure/2023/Oct/14
Exploit, Issue Tracking, Vendor Advisory
https://bugs.squid-cache.org/show_bug.cgi?id=5106

Scores

CVSS v3 4.9
EPSS 0.0434
EPSS Percentile 89.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-401
Status published
Products (5)
debian/debian_linux 9.0
debian/debian_linux 10.0
fedoraproject/fedora 33
fedoraproject/fedora 34
squid-cache/squid 1.0 - 4.15
Published May 27, 2021
Tracked Since Feb 18, 2026