SQUID-2023:4 Denial of Service in SSL Certificate validation
CVE-2023-46724

7.5HIGH

Key Information:

Vendor

Squid-cache

Status
Squid
Vendor
CVE Published:
1 November 2023

What is CVE-2023-46724?

An improper validation issue found in Squid Proxy allows for a Denial of Service scenario during SSL Certificate validation. Attackers can exploit this by performing a TLS Handshake using a specially crafted SSL Certificate in the server certificate chain, specifically affecting HTTPS connections and SSL-Bump functionality. This vulnerability is addressed in Squid version 6.4, and users of prior versions are encouraged to apply patches available in the Squid patch archives or consult with their package vendor for updates.

Affected Version(s)

squid >= 3.3.0.1, < 6.4

References

https://github.com/squid-cache/squid/security/advisories/...
x_refsource_CONFIRM
https://github.com/squid-cache/squid/commit/b70f864940225...
x_refsource_MISC
http://www.squid-cache.org/Versions/v5/SQUID-2023_4.patch
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2023-46724 : SQUID-2023:4 Denial of Service in SSL Certificate validation