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Fencer Intel
medium 4.3

CVE-2012-0862 json

builtins.c in Xinetd before 2.3.15 does not check the service type when the tcpmux-server service is enabled, which exposes all enabled ser…

published 2012-06-04 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-0887

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.7%
EPSS 2.7% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

builtins.c in Xinetd before 2.3.15 does not check the service type when the tcpmux-server service is enabled, which exposes all enabled services and allows remote attackers to bypass intended access restrictions via a request to tcpmux port 1.

Patch / fix

  • xinetd Debian 14, Debian 13, Debian 12 1:2.3.14-7.1

debian advisories DEBIAN-CVE-2012-0862

  • xinetd RHEL 5 2:2.3.14-19.el5
  • xinetd RHEL 6 2:2.3.14-38.el6

red hat advisories RHSA-2013:1302RHSA-2013:0499

  • xinetd openSUSE Tumbleweed 2.3.15-11.3

opensuse advisories openSUSE-SU-2024:10323-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-0862 updated cvss 2.6

xinetd: enables unintentional services over tcpmux port

  • Red Hat Enterprise Linux (v. 5 server) xinetd 2.3.14-19.el5 Red Hat Enterprise Linux Desktop (v. 5 client) xinetd 2.3.14-19.el5
    fixed: vendor fix RHSA-2013:1302
  • Red Hat Enterprise Linux Desktop (v. 6) xinetd 2.3.14-38.el6 Red Hat Enterprise Linux HPC Node (v. 6) xinetd 2.3.14-38.el6 Red Hat Enterprise Linux Server (v. 6) xinetd 2.3.14-38.el6 Red Hat Enterprise Linux Workstation (v. 6) xinetd 2.3.14-38.el6
    fixed: vendor fix RHSA-2013:0499

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.75% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.