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Test ID:1.3.6.1.4.1.25623.1.0.64802
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2009:1287
Summary:Redhat Security Advisory RHSA-2009:1287
Description:The remote host is missing updates announced in
advisory RHSA-2009:1287.

OpenSSH is OpenBSD's SSH (Secure Shell) protocol implementation. These
packages include the core files necessary for both the OpenSSH client and
server.

A flaw was found in the SSH protocol. An attacker able to perform a
man-in-the-middle attack may be able to obtain a portion of plain text from
an arbitrary ciphertext block when a CBC mode cipher was used to encrypt
SSH communication. This update helps mitigate this attack: OpenSSH clients
and servers now prefer CTR mode ciphers to CBC mode, and the OpenSSH server
now reads SSH packets up to their full possible length when corruption is
detected, rather than reporting errors early, reducing the possibility of
successful plain text recovery. (CVE-2008-5161)

Solution:
All OpenSSH users are advised to upgrade to these updated packages, which
contain backported patches to resolve these issues and add these
enhancements. After installing this update, the OpenSSH server daemon
(sshd) will be restarted automatically.

Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

http://rhn.redhat.com/errata/RHSA-2009-1287.html
http://www.redhat.com/security/updates/classification/#low
Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2008-5161
Bugtraq: 20081121 OpenSSH security advisory: cbc.adv (Google Search)
http://www.securityfocus.com/archive/1/archive/1/498558/100/0/threaded
Bugtraq: 20081123 Revised: OpenSSH security advisory: cbc.adv (Google Search)
http://www.securityfocus.com/archive/1/archive/1/498579/100/0/threaded
http://isc.sans.org/diary.html?storyid=5366
http://www.cpni.gov.uk/Docs/Vulnerability_Advisory_SSH.txt
http://support.avaya.com/elmodocs2/security/ASA-2008-503.htm
http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
HPdes Security Advisory: HPSBMA02447
http://marc.info/?l=bugtraq&m=125017764422557&w=2
HPdes Security Advisory: SSRT090062
RedHat Security Advisories: RHSA-2009:1287
http://rhn.redhat.com/errata/RHSA-2009-1287.html
http://sunsolve.sun.com/search/document.do?assetkey=1-66-247186-1
CERT/CC vulnerability note: VU#958563
http://www.kb.cert.org/vuls/id/958563
BugTraq ID: 32319
http://www.securityfocus.com/bid/32319
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:11279
http://www.securitytracker.com/id?1021382
http://secunia.com/advisories/33121
http://secunia.com/advisories/34857
http://secunia.com/advisories/36558
http://www.vupen.com/english/advisories/2008/3172
http://www.vupen.com/english/advisories/2008/3173
http://www.vupen.com/english/advisories/2008/3409
http://osvdb.org/49872
http://osvdb.org/50035
http://osvdb.org/50036
http://www.securitytracker.com/id?1021235
http://www.securitytracker.com/id?1021236
http://secunia.com/advisories/32740
http://secunia.com/advisories/32760
http://secunia.com/advisories/32833
http://secunia.com/advisories/33308
http://www.vupen.com/english/advisories/2009/1135
http://www.vupen.com/english/advisories/2009/3184
XForce ISS Database: openssh-sshtectia-cbc-info-disclosure(46620)
http://xforce.iss.net/xforce/xfdb/46620
CopyrightCopyright (c) 2009 E-Soft Inc. http://www.securityspace.com

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