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Moderate Security Update RHSA-2013:1409-01 for xinetd Remote Exec

red hat
Calendar Grey October 7, 2013
Dist Redhat Esm H88
Cautionary security notification for xinetd targets elevated execution vulnerability, applicable for CentOS Linux versions 5 and 6.
An updated xinetd package that fixes one security issue is now available for Red Hat Enterprise Linux 5 and 6

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258

Summary

The xinetd package provides a secure replacement for inetd, the Internet services daemon. xinetd provides access control for all services based on the address of the remote host and/or on time of access, and can prevent denial-of-access attacks.
It was found that xinetd ignored the user and group configuration directives for services running under the tcpmux-server service. This flaw could cause the associated services to run as root. If there was a flaw in such a service, a remote attacker could use it to execute arbitrary code with the privileges of the root user. (CVE-2013-4342)
Red Hat would like to thank Thomas Swan of FedEx for reporting this issue.
All xinetd users are advised to upgrade to this updated package, which contains a backported patch to correct this issue.

Topics%20covered

Topics Covered

security advisory moderate security update access control Red Hat Enterprise Linux remote execution xinetd

References

https://access.redhat.com/security/cve/CVE-2013-4342 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
i386: xinetd-2.3.14-20.el5_10.i386.rpm xinetd-debuginfo-2.3.14-20.el5_10.i386.rpm
x86_64: xinetd-2.3.14-20.el5_10.x86_64.rpm xinetd-debuginfo-2.3.14-20.el5_10.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
i386: xinetd-2.3.14-20.el5_10.i386.rpm xinetd-debuginfo-2.3.14-20.el5_10.i386.rpm
ia64: xinetd-2.3.14-20.el5_10.ia64.rpm xinetd-debuginfo-2.3.14-20.el5_10.ia64.rpm
ppc: xinetd-2.3.14-20.el5_10.ppc.rpm xinetd-debuginfo-2.3.14-20.el5_10.ppc.rpm
s390x: xinetd-2.3.14-20.el5_10.s390x.rpm xinetd-debuginfo-2.3.14-20.el5_10.s390x.rpm
x86_64: xinetd-2.3.14-20.el5_10.x86_64.rpm xinetd-debuginfo-2.3.14-20.el5_10.x86_64.rpm
Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: xinetd-2.3.14-39.el6_4.i686.rpm xinetd-debuginfo-2.3.14-39.el6_4.i686.rpm
x86_64: xinetd-2.3.14-39.el6_4.x86_64.rpm xinetd-debuginfo-2.3.14-39.el6_4.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
x86_64: xinetd-2.3.14-39.el6_4.x86_64.rpm xinetd-debuginfo-2.3.14-39.el6_4.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
i386: xinetd-2.3.14-39.el6_4.i686.rpm xinetd-debuginfo-2.3.14-39.el6_4.i686.rpm
ppc64: xinetd-2.3.14-39.el6_4.ppc64.rpm xinetd-debuginfo-2.3.14-39.el6_4.ppc64.rpm
s390x: xinetd-2.3.14-39.el6_4.s390x.rpm

Read the Full Advisory


Advisory ID: RHSA-2013:1409-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2013:1409.html
Issue date: 2013-10-07
Keywords: xinetd

Topic

An updated xinetd package that fixes one security issue is now availablefor Red Hat Enterprise Linux 5 and 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory moderate security update access control Red Hat Enterprise Linux remote execution xinetd

Relevant Releases Architectures

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Bugs Fixed

1006100 - CVE-2013-4342 xinetd: ignores user and group directives for tcpmux services

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