Avaya IP Softphone Denial of Service Vulnerability

Original Release Date: October 8, 2008
Last Revised: March 11, 2009
Number: ASA-2008-363
Risk Level: Medium
Advisory Version: 3.0
Advisory Status: Final

1. Overview:

A vulnerability has been found in the Avaya IP Softphone that may cause the application to unexpectedly terminate, resulting in a Denial of Service (DoS).

Avaya would like to thank VoIPshield for reporting this issue. The notice from VoIPshield can be found at:

2. Affected Products:

Product: Affected Version(s): Risk Level: Actions:
Avaya IP Softphone 6.01.85 Medium Upgrade to IP Softphone R6 SP6 or later.

Recommended Actions:
For all vulnerable versions of Avaya IP Softphone, Avaya recommends that customers restrict network access to the PC. This restriction should be enforced through the use of physical security, firewalls, ACLs, VPNs, and other generally-accepted networking practices until such time as the upgrade can be installed.

3. 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.

4. 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.

5. Revision History:

V 1.0 - October 8, 2008 - Initial Statement issued.
V 2.0 - February 16, 2009 - Changed recommended actions and ASA status to final.
V 3.0 - March 11, 2009 - Changed recommended actions to specify the correct SP containing the fix.

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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