SQUID-2023:11 Denial of Service in Cache Manager
CVE-2024-23638

6.5MEDIUM

Key Information:

Vendor

Squid-cache

Status
Squid
Vendor
CVE Published:
24 January 2024

What is CVE-2024-23638?

Squid is a caching proxy for the Web. Due to an expired pointer reference bug, Squid prior to version 6.6 is vulnerable to a Denial of Service attack against Cache Manager error responses. This problem allows a trusted client to perform Denial of Service when generating error pages for Client Manager reports. Squid older than 5.0.5 have not been tested and should be assumed to be vulnerable. All Squid-5.x up to and including 5.9 are vulnerable. All Squid-6.x up to and including 6.5 are vulnerable. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. As a workaround, prevent access to Cache Manager using Squid's main access control: http_access deny manager.

Affected Version(s)

squid < 6.6

References

https://github.com/squid-cache/squid/security/advisories/...
x_refsource_CONFIRM
https://github.com/squid-cache/squid/commit/290ae202883ac...
x_refsource_MISC
https://github.com/squid-cache/squid/commit/e8118a7381213...
x_refsource_MISC

EPSS Score

14% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.