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Red Hat Product Errata RHSA-2013:1302 - Security Advisory
Issued:
2013-09-30
Updated:
2013-09-30

RHSA-2013:1302 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Low: xinetd security and bug fix update

Type/Severity

Security Advisory: Low

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An updated xinetd package that fixes one security issue and two bugs is now
available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having low
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

Description

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.

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)

Red Hat would like to thank Thomas Swan of FedEx for reporting this issue.

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.
(BZ#852274)

  • 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.
(BZ#811000)

All users of xinetd are advised to upgrade to this updated package, which
contains backported patches to correct these issues.

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

Affected Products

  • Red Hat Enterprise Linux Server 5 x86_64
  • Red Hat Enterprise Linux Server 5 ia64
  • Red Hat Enterprise Linux Server 5 i386
  • Red Hat Enterprise Linux Workstation 5 x86_64
  • Red Hat Enterprise Linux Workstation 5 i386
  • Red Hat Enterprise Linux Desktop 5 x86_64
  • Red Hat Enterprise Linux Desktop 5 i386
  • Red Hat Enterprise Linux for IBM z Systems 5 s390x
  • Red Hat Enterprise Linux for Power, big endian 5 ppc
  • Red Hat Enterprise Linux Server from RHUI 5 x86_64
  • Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

  • BZ - 790940 - CVE-2012-0862 xinetd: enables unintentional services over tcpmux port

CVEs

  • CVE-2012-0862

References

  • https://access.redhat.com/security/updates/classification/#low
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux Server 5

SRPM
xinetd-2.3.14-19.el5.src.rpm SHA-256: cf674fd772d65b1f4696b420a8da62f95fa971b04504d2c02aa71ee42772222e
x86_64
xinetd-2.3.14-19.el5.x86_64.rpm SHA-256: 0316811271f15a11b42408f7a815e66800da6296393702de54f216a825348a45
xinetd-debuginfo-2.3.14-19.el5.x86_64.rpm SHA-256: 7e3ce8242b0efbefbf749c1ed8e653f9ca11d8eab3212f6dc3506c55d8f4e0a8
ia64
xinetd-2.3.14-19.el5.ia64.rpm SHA-256: ad4ede48060d8e56ba230ac0b3b182730f123227636b34d8bfa8ff82270ce48e
xinetd-debuginfo-2.3.14-19.el5.ia64.rpm SHA-256: 5a4733b8a935054ef032aa0ebb6dc3b9567cb9bd11a675871e4031873620d3eb
i386
xinetd-2.3.14-19.el5.i386.rpm SHA-256: fe40a858efa7cc0920527b9f1bcb8396435abfe866bdbf5cf15757dc7ebe8a20
xinetd-debuginfo-2.3.14-19.el5.i386.rpm SHA-256: ddf166b1ae3c0ffe106a5a92364f0918d6f9ff6f216682f2d229fa53caf6a9f9

Red Hat Enterprise Linux Workstation 5

SRPM
xinetd-2.3.14-19.el5.src.rpm SHA-256: cf674fd772d65b1f4696b420a8da62f95fa971b04504d2c02aa71ee42772222e
x86_64
xinetd-2.3.14-19.el5.x86_64.rpm SHA-256: 0316811271f15a11b42408f7a815e66800da6296393702de54f216a825348a45
xinetd-debuginfo-2.3.14-19.el5.x86_64.rpm SHA-256: 7e3ce8242b0efbefbf749c1ed8e653f9ca11d8eab3212f6dc3506c55d8f4e0a8
i386
xinetd-2.3.14-19.el5.i386.rpm SHA-256: fe40a858efa7cc0920527b9f1bcb8396435abfe866bdbf5cf15757dc7ebe8a20
xinetd-debuginfo-2.3.14-19.el5.i386.rpm SHA-256: ddf166b1ae3c0ffe106a5a92364f0918d6f9ff6f216682f2d229fa53caf6a9f9

Red Hat Enterprise Linux Desktop 5

SRPM
xinetd-2.3.14-19.el5.src.rpm SHA-256: cf674fd772d65b1f4696b420a8da62f95fa971b04504d2c02aa71ee42772222e
x86_64
xinetd-2.3.14-19.el5.x86_64.rpm SHA-256: 0316811271f15a11b42408f7a815e66800da6296393702de54f216a825348a45
xinetd-debuginfo-2.3.14-19.el5.x86_64.rpm SHA-256: 7e3ce8242b0efbefbf749c1ed8e653f9ca11d8eab3212f6dc3506c55d8f4e0a8
i386
xinetd-2.3.14-19.el5.i386.rpm SHA-256: fe40a858efa7cc0920527b9f1bcb8396435abfe866bdbf5cf15757dc7ebe8a20
xinetd-debuginfo-2.3.14-19.el5.i386.rpm SHA-256: ddf166b1ae3c0ffe106a5a92364f0918d6f9ff6f216682f2d229fa53caf6a9f9

Red Hat Enterprise Linux for IBM z Systems 5

SRPM
xinetd-2.3.14-19.el5.src.rpm SHA-256: cf674fd772d65b1f4696b420a8da62f95fa971b04504d2c02aa71ee42772222e
s390x
xinetd-2.3.14-19.el5.s390x.rpm SHA-256: 9410b92b4cfa2a3f5d0af5543dd9d3995797fab7b78620b6a0aab2485002ef2b
xinetd-debuginfo-2.3.14-19.el5.s390x.rpm SHA-256: 90d4a4bd4227cf16b17b7310bfc69514b93cfd4dab1b00b8c864f4b9ee71c292

Red Hat Enterprise Linux for Power, big endian 5

SRPM
xinetd-2.3.14-19.el5.src.rpm SHA-256: cf674fd772d65b1f4696b420a8da62f95fa971b04504d2c02aa71ee42772222e
ppc
xinetd-2.3.14-19.el5.ppc.rpm SHA-256: 76aaab0819ce1cbdbf1e11dca3fab2eb0a7e187887952c01c8921bd4d6328669
xinetd-debuginfo-2.3.14-19.el5.ppc.rpm SHA-256: e5dd09780271b3064b12bf93dc83b2c6643a64a76d63832d4b2535094c876596

Red Hat Enterprise Linux Server from RHUI 5

SRPM
xinetd-2.3.14-19.el5.src.rpm SHA-256: cf674fd772d65b1f4696b420a8da62f95fa971b04504d2c02aa71ee42772222e
x86_64
xinetd-2.3.14-19.el5.x86_64.rpm SHA-256: 0316811271f15a11b42408f7a815e66800da6296393702de54f216a825348a45
xinetd-debuginfo-2.3.14-19.el5.x86_64.rpm SHA-256: 7e3ce8242b0efbefbf749c1ed8e653f9ca11d8eab3212f6dc3506c55d8f4e0a8
i386
xinetd-2.3.14-19.el5.i386.rpm SHA-256: fe40a858efa7cc0920527b9f1bcb8396435abfe866bdbf5cf15757dc7ebe8a20
xinetd-debuginfo-2.3.14-19.el5.i386.rpm SHA-256: ddf166b1ae3c0ffe106a5a92364f0918d6f9ff6f216682f2d229fa53caf6a9f9

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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