sendmail security update (RHSA-2006-0264 & RHSA-2006-0265)

Original Release Date: March 24, 2006
Last Revised: March 24, 2006
Number: ASA-2006-074
Risk Level: High
Advisory Version: 1.0
Advisory Status: Final

1. Overview:

Sendmail is a Mail Transport Agent (MTA) used to send mail between machines.

A flaw in the handling of asynchronous signals was discovered in Sendmail. An attacker may be able to exploit a race condition to execute arbitrary code as root. Exploitation of this vulnerability requires Sendmail to listen for remote or local connections. The Common Vulnerabilities and Exposures project has assigned the name CVE-2006-0058 to this issue.

Certain Avaya Systems Products have vulnerable versions of sendmail installed, and therefore may be vulnerable.

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

2. Avaya System Products with sendmail installed:

Product: Affected Version(s): Risk Level: Actions:
Avaya S87x0,
S8500, S8300
Media Servers
Versions prior to CM 2.0 High Prior to Communication Manager 2.0, sendmail is configured to listen for local and remote connections. Avaya recommends that customers upgrade to supported versions of Communication Manager.
Avaya S87x0,
S8500, S8300
Media Servers
CM 2.0 and later None Prior to Communication Manager 3.1, the sendmail package is installed, however by default sendmail is not listening for remote or local connections.

Communication Manager 3.1 and later have removed the sendmail package.

These versions of Communication Manager are not vulnerable.
Avaya SIP Enablement
Services (SES)
Converged Communication
Server (CCS)
All None The sendmail package is installed, however by default sendmail is not listening for remote or local connections.

This product is not vulnerable.
Avaya Intuity LX All None The sendmail package is installed, however by default sendmail is not listening for remote or local connections.

This product is not vulnerable.
Avaya Messaging Storage Server All None The sendmail package is installed, however by default sendmail is not listening for remote or local connections.

This product is not vulnerable.
Avaya Message Networking All None The sendmail package is installed, however by default sendmail is not listening for remote or local connections.

This product is not vulnerable.

Recommended Actions:
For all system products which use vulnerable versions of sendmail, 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 vendors guidance:

4. Software-Only Products:

Product: Affected Version(s): Risk Level: Actions:
Avaya Interactive Response(IR) All None Depending on the Operating System provided by customers, the affected packages may be installed on the underlying Operating System supporting the IR application. The IR application does not require the software described in this advisory.
CVLAN All None Depending on the Operating System provided by customers, the affected packages 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) All None Depending on the Operating System provided by customers, the affected packages 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:
Avaya recommends that customers follow recommended actions supplied by the Operating System vendor (e.g. RedHat Linux) or remove the affected packages.

5. 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.

6. 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 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, 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.

7. Revision History:

V 1.0 - March 24, 2006 - Initial Statement issued.

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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