CVE-2013-4342: xinetd does not enforce the user and group configuration directives for TCPMUX services, which causes these se

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HIGH 7.6WATCHLISTMITIGATEMITIGATE

CVE-2013-4342 is a high-severity flaw (CVSS 7.6) affecting xinetd, enterprise linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

xinetd does not enforce the user and group configuration directives for TCPMUX services, which causes these services to be run as root and makes it easier for remote attackers to gain privileges by leveraging another vulnerability in a service.

Why this priority

High severity
EPSS top 6%: very likely to be exploited
Public exploit reference
On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.6 (High)
EPSS exploit chance	6.4% (top 6%)
CISA exploited list	No
Weakness	CWE-264
Published	2013-10-10
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: redhat · xinetd

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2013-10-10 00:55 UTCPublished CVE record published
2026-06-16 23:57 UTCUpdated Record last modified

xinetd xinetd MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xinetd || rpm -q xinetd || xinetd --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

redhat enterprise linux MITIGATE

Affected: 5 · 6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 5

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2013-4342?

xinetd: mitigate or apply the listed mitigation; enterprise linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2013-4342 being exploited?

CVE-2013-4342 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2013-4342 affect?

CVE-2013-4342 affects xinetd, enterprise linux. Severity is high (CVSS 7.6). xinetd does not enforce the user and group configuration directives for TCPMUX services, which causes these services to be run as root and makes it easier for remote attackers to gain privileges by leveraging another vulnerability in a serv

How urgent is CVE-2013-4342?

Priority 60/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference; On your watchlist

Related CVEs

CVE-2012-0862 MEDIUM 4.3 UPGRADE builtins.c in Xinetd before 2.3.15 does not check the service type when the tcpmux-server service is enabled,

References

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