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CVE-2023-46728

SQUID-2021:8 Denial of Service in Gopher gateway

Severity
High 7.5
Published
27 Sept 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
6.0.1
Also known as
GHSA-cg5h-v6vc-w33f
Sources
NVD, Project advisories (GitHub)

Description

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a NULL pointer dereference bug Squid is vulnerable to a Denial of Service attack against Squid's Gopher gateway. The gopher protocol is always available and enabled in Squid prior to Squid 6.0.1. Responses triggering this bug are possible to be received from any gopher server, even those without malicious intent.…

Affected software

SoftwareAffected versions
SquidServers and applications · cpe:a:squid-cache:squid
  • Every version before 6.0.1
SquidServers and applications · github:squid-cache/squid
  • Every version before 6.0.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-46728
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-46728
  • GitHub Advisory Database https://github.com/advisories/GHSA-cg5h-v6vc-w33f
  • github.com https://github.com/squid-cache/squid/security/advisories/GHSA-cg5h-v6vc-w33f