OpenSSH security and bug fix update (RHSA-2007-0703)

Original Release Date: January 2, 2008
Last Revised: March 3, 2009
Number: ASA-2007-527
Risk Level: Low
Advisory Version: 4.0
Advisory Status: Interim

1. Overview:

OpenSSH is an implementation of an SSH server and SSH/SCP/SFTP clients.

OpenSSH was found to contain a flaw in the way the SSH server wrote account names into the audit subsystem. If an attacker injected strings containing parts of audit messages, it could possibly mislead and/or confuse tools that parse the audit logs. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2007-3102 to this issue.

OpenSSH's SSH server process was found to contain an issue with GSSAPI authentication requests that would potentially allow a remote attacker to determine if a given username was valid. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2006-5052 to this issue.

More information about these vulnerabilities can be found in the security advisory issued by RedHat Linux:

2. Avaya System Products with OpenSSH installed:

Product: Affected Version(s): Risk Level: Actions:
Avaya Communication Manager CM 5.0 and earlier Low Upgrade to CM 5.1 or later.
Avaya Intuity Audix LX IALX 2.0, 2.0 SP1 Low Upgrade to IALX 2.0 SP2 or later.
Avaya Messaging Storage Server MSS 3.x, 4.0 Low Upgrade to MSS 5.0 or later.
Avaya Message Networking MN 3.1 Low See recommended actions below.  This issue will be addressed in accordance with Avaya's Product Security Vulnerability Response Policy
Avaya CCS/SES SES 5.0 and earlier Low Upgrade to SES 5.1 or later.
Avaya AES AES 4.0, 4.0.1, 4.1 Low Upgrade to AES 4.2 or later.

Recommended Actions:
For all system products which use vulnerable versions of OpenSSH, Avaya recommends that customers restrict local and network access to the server. This restriction should be enforced through the use of physical security, firewalls, ACLs, VPNs, and other generally-accepted networking practices until such time as an update becomes available and can be installed.

3. Avaya Software-Only Products:

Avaya software-only products operate on general-purpose operating systems. Occasionally vulnerabilities may be discovered in the underlying operating system or applications that come with the operating system. These vulnerabilities often do not impact the software-only product directly but may threaten the integrity of the underlying platform.

In the case of this advisory Avaya software-only products are not affected by the vulnerability directly but the underlying Linux platform may be. Customers should determine on which Linux operating system the product was installed and then follow that vendor's guidance.

Product: Actions:
CVLAN Depending on the Operating System provided by customers, the affected package may be installed on the underlying Operating System supporting the CVLAN application. The CVLAN application does not require the software described in this advisory.
Avaya Integrated Management Suite (IMS) Depending on the Operating System provided by customers, the affected package may be installed on the underlying Operating System supporting the IMS application. The IMS application does not require the software described in this advisory.

Recommended Actions:
In the event that the affected package is installed, Avaya recommends that customers follow recommended actions supplied by RedHat Linux.

4. Additional Information:

Additional information may also be available via the Avaya support website and through your Avaya account representative. Please contact your Avaya product support representative, or dial 1-800-242-2121, with any questions.

5. Disclaimer:

ALL INFORMATION IS BELIEVED TO BE CORRECT AT THE TIME OF PUBLICATION AND IS PROVIDED "AS IS". AVAYA INC., ON BEHALF ITSELF AND ITS SUBSIDIARIES AND AFFILIATES (HEREINAFTER COLLECTIVELY REFERRED TO AS "AVAYA"), DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND FURTHERMORE, AVAYA MAKES NO REPRESENTATIONS OR WARRANTIES THAT THE STEPS RECOMMENDED WILL ELIMINATE SECURITY OR VIRUS THREATS TO CUSTOMERS' SYSTEMS. IN NO EVENT SHALL AVAYA BE LIABLE FOR ANY DAMAGES WHATSOEVER ARISING OUT OF OR IN CONNECTION WITH THE INFORMATION OR RECOMMENDED ACTIONS PROVIDED HEREIN, INCLUDING DIRECT, INDIRECT, INCIDENTAL, STATUTORY, CONSEQUENTIAL DAMAGES, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF AVAYA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

THE INFORMATION PROVIDED HERE DOES NOT AFFECT THE SUPPORT AGREEMENTS IN PLACE FOR AVAYA PRODUCTS. SUPPORT FOR AVAYA PRODUCTS CONTINUES TO BE EXECUTED AS PER EXISTING AGREEMENTS WITH AVAYA.

6. Revision History:

V 1.0 - January 2, 2008 - Initial Statement issued.
V 2.0 - November 25, 2008 - Changed CM, SES, and AES affected versions and recommended actions.
V 3.0 - January 6, 2009 - Changed IALX recommended actions.
V 4.0 - March 3, 2009 - Changed IALX affected versions and MSS affected versions and recommended actions.

Send information regarding any discovered security problems with Avaya products to either the contact noted in the product's documentation or securityalerts@avaya.com.

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