CVE catalog

CVE-2013-4123

squid: CVE-2013-4123

Severity: Low
Source: [NVD] · [CVE record]
EPSS: 80.45% · Oct 25, 2026

client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allows remote attackers to cause a denial of service via a crafted port number in a HTTP Host header.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	squid	sid	`7.7-1`	not affected
Debian	squid	forky	`7.7-1`	not affected
Debian	squid	trixie	`6.13-2+deb13u3`	not affected
Debian	squid	trixie-security	`6.13-2+deb13u2`	not affected
Debian	squid	bookworm	`5.7-2+deb12u5`	not affected
Debian	squid	bookworm-security	`5.7-2+deb12u6`	not affected

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	squid	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	squid	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	squid	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	squid	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[squid]Unknown
Details (4)
- 5.7-2+deb12u5 · amd64 · bookworm
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u5 · arm64 · bookworm
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u6 · amd64 · bookworm-security
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u6 · arm64 · bookworm-security
  Not affected
  dsa · squid · debian · bookworm
[squid-cgi]Unknown
Source package: [squid]
Details (4)
- 5.7-2+deb12u5 · amd64 · bookworm
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u5 · arm64 · bookworm
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u6 · amd64 · bookworm-security
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u6 · arm64 · bookworm-security
  Not affected
  dsa · squid · debian · bookworm
[squidclient]Unknown
Source package: [squid]
Details (4)
- 5.7-2+deb12u5 · amd64 · bookworm
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u5 · arm64 · bookworm
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u6 · amd64 · bookworm-security
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u6 · arm64 · bookworm-security
  Not affected
  dsa · squid · debian · bookworm
[squid-common]Unknown
Source package: [squid]
Details (4)
- 5.7-2+deb12u5 · all · bookworm
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u5 · all · bookworm
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u6 · all · bookworm-security
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u6 · all · bookworm-security
  Not affected
  dsa · squid · debian · bookworm
[squid-openssl]Unknown
Source package: [squid]
Details (4)
- 5.7-2+deb12u5 · amd64 · bookworm
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u5 · arm64 · bookworm
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u6 · amd64 · bookworm-security
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u6 · arm64 · bookworm-security
  Not affected
  dsa · squid · debian · bookworm
[squid-purge]Unknown
Source package: [squid]
Details (4)
- 5.7-2+deb12u5 · amd64 · bookworm
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u5 · arm64 · bookworm
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u6 · amd64 · bookworm-security
  Not affected
  dsa · squid · debian · bookworm
- 5.7-2+deb12u6 · arm64 · bookworm-security
  Not affected
  dsa · squid · debian · bookworm

Observed: Oct 23, 2026, 5:08:24 PM UTC

References

[https://security-tracker.debian.org/tracker/CVE-2013-4123]

[Debian Security Tracker] · [FIRST EPSS]