gnutls security update (RHSA-2013-0588)

Original Release Date: April 10, 2013
Last Revised: August 4, 2016
Number: ASA-2013-182
Risk Level: Medium
Advisory Version: 5.0
Advisory Status: Final

1. Overview:

The GnuTLS library provides support for cryptographic algorithms and for protocols such as Transport Layer Security (TLS).

It was discovered that GnuTLS leaked timing information when decrypting TLS/SSL protocol encrypted records when CBC-mode cipher suites were used. A remote attacker could possibly use this flaw to retrieve plain text from the encrypted packets by using a TLS/SSL server as a padding oracle. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2013-1619 to this issue.

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

2. Avaya System Products using a modified version of RHEL5 or RHEL6 with affected packages installed:

Product: Affected Version(s): Risk Level: Actions:
Avaya Aura® Application Enablement Services 5.2.x, 6.1 through 6.3 Medium For bundled offer versions 5.x through 6.3, upgrade to 6.3.1 or later.
For System Platform offer, upgrade to 6.2SP patch 1 or later.
For VMware offer, upgrade to 6.3.3 or later.
Avaya IQ 5.2 through 5.2.5 Medium Upgrade to 5.2.6 and install Patch 2 or later.
Avaya Aura® Communication Manager 5.2.x, 6.0.1, 6.2.x, 6.3 Low Upgrade to 6.3 and install Security Service Pack 2 or later.
Avaya Communication Server 1000:
  • CS1000E
  • CS1000M
  • CS1000E/CS1000M Signaling Server
6.x, 7.x Low See recommended actions and Mitigating Factors table below. This advisory will not be addressed as no further releases are planned.
Avaya Aura® Conferencing Standard Edition 6.x Medium See recommended actions and Mitigating Factors table below. This advisory will not be addressed as no further releases are planned. It is recommended that customers migrate to one of Avaya's conferencing solutions including Aura® Conferencing 8.0 or later.
Avaya Aura® Experience Portal 6.x Low Upgrade to 7.0 and Avaya Enterprise Linux for 7.0 or later.
Avaya IP Office Server Edition 8.x, 9.0 through 9.0 SP2 Medium Upgrade to 9.0 SP3 or later.
Avaya IP Office Application Server 8.x, 9.0 through 9.0 SP2 Medium Upgrade to 9.0 SP3 or later.
Avaya Meeting Exchange 5.x, 6.2 through 6.2 SP2 Medium Upgrade to 6.2 SP3 or later
Avaya Aura® Messaging 6.0 through 6.2 SP4 Low Upgrade to 6.3 or later.
Avaya one-X® Client Enablement Services 6.1.x Medium Upgrade to 6.2 or later.
Avaya Aura® Presence Services 6.x Low Upgrade to Aura Presence Services 7.0 or later. Further information about this version, as well as the overall Aura 7.0 release, is available on support.avaya.com.
Avaya Proactive Contact 5.0, 5.1 Low Upgrade to 5.1.1 or later.
Avaya Aura® Session Manager 1.x, 5.x, 6.0 through 6.3.3 Low Upgrade to 6.3.4 or later.
Avaya Aura® System Manager 5.x, 6.0 through 6.3 Medium Upgrade to 6.3.1 or later.
Avaya Aura® System Platform 1.x, 6.0 through 6.3 Medium Upgrade to 6.3.1 or later.
Avaya Aura® Communication Manager Utility Services 6.1 through 6.2 Medium For 6.1, upgrade to 6.2 and install 6.2.10.0.15 or later.
For 6.2, install 6.2.10.0.15 or later.

Recommended Actions for System Products:
Avaya strongly recommends that customers follow networking and security best practices by implementing firewalls, ACLs, physical security or other appropriate access restrictions. Though Avaya believes such restrictions should always be in place, risk to Avaya products and the surrounding network from this potential vulnerability may be mitigated by ensuring these practices are implemented until such time as an Avaya provided product update or the recommended Avaya action is applied. Further restrictions as deemed necessary based on the customer's security policies may be required during this interim period, but customers should not modify the System Product operating system or application unless the change is approved by Avaya. Making changes that are not approved may void the Avaya product service contract.

Mitigating Factors:

When determining risk, Avaya takes into account many factors as outlined by Avaya's Security Vulnerability Classification Policy. The following table describes factors that mitigate the risk of specific vulnerabilities for affected Avaya products:

Vulnerability Mitigating Factors
CVE-2013-1619
The risk is rated Medium AES, IQ, Conferencing Standard Edition, IP Office, Meeting Exchange, one-X, System Manager, System Platform and Utility Services because of the possibility of information disclosure.
The risk is rated Low for other products because gnuTLS is not used by default or only debugging tools use it and access to debugging tools are limited to administrative users.

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:
Avaya Aura® Application Enablement Services 4.x/5.x Depending on the Operating System provided by customers, the affected package may be installed on the underlying Operating System supporting the AES application.
CVLAN Depending on the Operating System provided by customers, the affected package may be installed on the underlying Operating System supporting the CVLAN application.
Avaya Aura® Experience Portal Depending on the Operating System provided by customers, the affected package may be installed on the underlying Operating System supporting the EP application.
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.
Avaya Aura® Presence Services Depending on the Operating System provided by customers, the affected package may be installed on the underlying Operating System supporting the PS application.
Avaya Secure Access Link Gateway Depending on the Operating System provided by customers, the affected package may be installed on the underlying Operating System supporting the SAL Gateway application.
Avaya Aura® System Manager 1.0 Depending on the Operating System provided by customers, the affected package may be installed on the underlying Operating System supporting the SMGR application.
Avaya Voice Portal Depending on the Operating System provided by customers, the affected package may be installed on the underlying Operating System supporting the VP application.

Recommended Actions for Software-Only Products:
In the event that the affected package is installed, Avaya recommends that customers follow recommended actions supplied by Red Hat regarding their Enterprise 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 - April 10, 2013 - Initial Statement issued.
V 2.0 - June 15, 2015 - Updated affected versions and actions for AES, IPOffice, IPOAS, Messaging, One-X CES, CM, Proactive Contact, SM,SMGR, US and actions for CS1K, Conferencing SE and EP.
V 3.0 - July 20, 2015 - Updated affected versions and actions for IQ.
V 4.0 - October 28, 2015 - Updated actions for PS.
V 5.0 - August 4, 2016 - Updated actions and affected versions for MX, and advisory status to Final

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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