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Vulnerability record · CVE-2012-0862 · published 4 June 2012

CVE-2012-0862: Xinetd improper input validation vulnerability

XXinetd · Xinetd

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.

4.3 CVSS 2.0 Medium EPSS 2.8% · top 14.2% CWE-20 · Improper input validation
4.3CVSS 2.0 base score
2.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
26References
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.fedoraproject.org/pipermail/package-announce/2012-May/081428.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-May/081446.html
http://rhn.redhat.com/errata/RHSA-2013-1302.html
http://www.mandriva.com/security/advisories?name=MDVSA-2012:155
http://www.openwall.com/lists/oss-security/2012/05/09/5
http://www.openwall.com/lists/oss-security/2012/05/10/2
http://www.osvdb.org/81774
http://www.securityfocus.com/bid/53720
http://www.securitytracker.com/id?1027050
http://www.xinetd.org/#changes
https://bugzilla.redhat.com/attachment.cgi?id=583311
https://bugzilla.redhat.com/show_bug.cgi?id=790940
https://exchange.xforce.ibmcloud.com/vulnerabilities/75965
http://lists.fedoraproject.org/pipermail/package-announce/2012-May/081428.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-May/081446.html
http://rhn.redhat.com/errata/RHSA-2013-1302.html
http://www.mandriva.com/security/advisories?name=MDVSA-2012:155
http://www.openwall.com/lists/oss-security/2012/05/09/5
http://www.openwall.com/lists/oss-security/2012/05/10/2
http://www.osvdb.org/81774
http://www.securityfocus.com/bid/53720
http://www.securitytracker.com/id?1027050
http://www.xinetd.org/#changes
https://bugzilla.redhat.com/attachment.cgi?id=583311
https://bugzilla.redhat.com/show_bug.cgi?id=790940
https://exchange.xforce.ibmcloud.com/vulnerabilities/75965

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2001-0825Xinetd vulnerabilityBuffer overflow in internal string handling routines of xinetd before 2.1.8.8 allows remote attackers to execute arbitrary commands via a length argu…EPSS 3.6%7.6CVE-2013-4342Xinetd permissions and access controls vulnerabilityxinetd does not enforce the user and group configuration directives for TCPMUX services, which causes these services to be run as root and makes it e…EPSS 6.4%7.5CVE-2001-1389Xinetd vulnerabilityMultiple vulnerabilities in xinetd 2.3.0 and earlier, and additional variants until 2.3.3, may allow remote attackers to cause a denial of service or…EPSS 3.3%7.5CVE-2000-0536Xinetd vulnerabilityxinetd 2.1.8.x does not properly restrict connections if hostnames are used for access control and the connecting host does not have a reverse DNS en…EPSS 2.1%5.0CVE-2003-0211Xinetd vulnerabilityMemory leak in xinetd 2.3.10 allows remote attackers to cause a denial of service (memory consumption) via a large number of rejected connections.EPSS 8.9%3.6CVE-2001-1322Xinetd vulnerabilityxinetd 2.1.8 and earlier runs with a default umask of 0, which could allow local users to read or modify files that are created by an application tha…EPSS 0.36%2.1CVE-2002-0871Xinetd vulnerabilityxinetd 2.3.4 leaks file descriptors for the signal pipe to services that are launched by xinetd, which could allow those services to cause a denial o…EPSS 0.37%9.5CVE-2026-88771Citrix netscaler application delivery controller improper input validation vulnerabilityImproper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-…KEV

Source: NIST National Vulnerability Database (record CVE-2012-0862), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.