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Gmane
From: Pat Riehecky <riehecky-13hema8v3vg <at> public.gmane.org>
Subject: Security ERRATA Low: xinetd on SL6.x i386/x86_64
Newsgroups: gmane.linux.scientific.errata
Date: Thursday 28th February 2013 22:16:42 UTC (over 3 years ago)
Synopsis:          Low: xinetd security and bug fix update
Issue Date:        2013-02-21
CVE Numbers:       CVE-2012-0862
--

When xinetd services are configured with the "TCPMUX" or "TCPMUXPLUS" 
type, and
the tcpmux-server service is enabled, those services are accessible via 
port 1.
It was found that enabling the tcpmux-server service (it is disabled by
default) allowed every xinetd service, including those that are not 
configured
with the "TCPMUX" or "TCPMUXPLUS" type, to be accessible via port 1. 
This could
allow a remote attacker to bypass intended firewall restrictions.
(CVE-2012-0862)

This update also fixes the following bugs:

* Prior to this update, a file descriptor array in the service.c source
file
was not handled as expected. As a consequence, some of the descriptors 
remained
open when xinetd was under heavy load. Additionally, the system log was 
filled
with a large number of messages that took up a lot of disk space over time.
This update modifies the xinetd code to handle the file descriptors 
correctly
and messages no longer fill the system log.

* Prior to this update, services were disabled permanently when their 
CPS limit
was reached. As a consequence, a failed bind operation could occur when 
xinetd
attempted to restart the service. This update adds additional logic that
attempts to restart the service. Now, the service is only disabled if
xinetd
cannot restart the service after 30 attempts.
--

SL6
   x86_64
     xinetd-2.3.14-38.el6.x86_64.rpm
     xinetd-debuginfo-2.3.14-38.el6.x86_64.rpm
   i386
     xinetd-2.3.14-38.el6.i686.rpm
     xinetd-debuginfo-2.3.14-38.el6.i686.rpm

- Scientific Linux Development Team
 
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