Avaya EPT Response to GNU Bash (shellshock) Vulnerabilities (CVE-2014-6271, CVE-2014-7169)

Original Release Date: October 3, 2014
Last Revised: October 7, 2014
Number: ASA-2014-383
Risk Level: None
Advisory Version: 2.0
Advisory Status: Final

1. Overview:

The GNU Bourne Again shell (Bash) is a shell and command language interpreter compatible with the Bourne shell (sh). Bash is the default shell for Red Hat Enterprise Linux.

A flaw was found in the way Bash evaluated certain specially crafted environment variables. An attacker could use this flaw to override or bypass environment restrictions to execute shell commands. Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2014-6271 to this issue.

It was also found that the fix for CVE-2014-6271 was incomplete, and Bash still allowed certain characters to be injected into other environments via specially crafted environment variables. An attacker could potentially use this flaw to override or bypass environment restrictions to execute shell commands. Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2014-7169, CVE-2014-7186, CVE-2014-7187 to these issues.

More information about these vulnerabilities can be found in the security advisory issued by Red Hat:

2. Avaya EP&T 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:
AES/PC Connector Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the AES/PC Connector application.
Avaya Notification Solution Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Avaya Notification Solution application.
Avaya Speech Analytics Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Avaya Speech Analytics application.
Call Flow Analytics Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Call Flow Analytics application.
Callback Assist Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Callback Asisst application.
CC Mobile Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the CC Mobile application.
Contact Analyzer Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Contact Analyzer application.
Context Store Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Context Store application.
Co-browsing Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Co-browsing application.
CRM connectors (e.g. SAP, SFDC, WebSoftphone, etc.) Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the CRM connectors application.
Dynamic Routing Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Dynamic Routing application.
Dynamic Self Service Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Dynamic Self Service application.
Mobile Activity Assistant Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Mobile Activity Assistant application.
One Touch Video Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the One-Touch Video application.
Real Time Data Service Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Real Time Data Services application.
VDI-Agent Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the VDI-Agent application.

Recommended Actions for Software-Only Products:
In the event that the affected package is installed, Avaya recommends following the recommended actions supplied by their respective operating system vendor.

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 3, 2014 - Initial Statement issued.
V 2.0 - October 7, 2014 - Added Avaya Notification Solution, Co-browsing and Mobile Activity Assistant to products list.

Avaya customers or Business Partners should report any security issues found with Avaya products via the standard support process.
Independent security researchers can contact Avaya at securityalerts@avaya.com.

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