kernel security and bug fix update (RHSA-2012-1445)

Original Release Date: December 20, 2012
Last Revised: August 27, 2015
Number: ASA-2012-524
Risk Level: Low
Advisory Version: 9.0
Advisory Status: Final

1. Overview:

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issue:

It was found that the RHSA-2010:0178 update did not correctly fix the CVE-2009-4307 issue, a divide-by-zero flaw in the ext4 file system code. A local, unprivileged user with the ability to mount an ext4 file system could use this flaw to cause a denial of service. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2012-2100 to this issue.

More information about this vulnerability can be found in the security advisory issued by Red Hat:

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

Product: Affected Version(s): Risk Level: Actions:
Avaya Aura® Application Enablement Services 5.2 thru 6.2, 6.3 Low For 6.1 and earlier upgrade to 6.2 and install Linux Security Update Patch 1 as described in PSN003992u or for System Platform deployments upgrade to 6.3 or later.
For 6.2 install Linux Security Update Patch 1 as described in PSN003992u or for System Platform deployments upgrade to 6.3 or later.
For 6.3 VMware and turnkey deployments upgrade to 6.3.3 or later.
Avaya Aura® Application Server 5300:
  • SIP Core
2.x, 3.0 including SP5 Low For 2.x upgrade to 3.0 and install SP6 or later.
For 3.0 install SP6 or later.
Avaya IQ 5.0 thru 5.2.5 Low Upgrade to 5.2.6 and install Patch 2 or later.
Avaya Aura® Communication Manager 5.2.x thru 6.2.x Low Upgrade to 6.3 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 7.0 without SP4 Low Install SP4 or upgrade to 7.2 or later.
Avaya Aura® Conferencing Standard Edition 6.0.x Low 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 Avaya Aura® Conferencing 7.0 or later.
Avaya IP Office Application Server 8.x Low Upgrade to 9.0 or later.
Avaya Aura® Messaging 6.0 thru 6.2.x Low Upgrade to 6.3 or later.
Avaya one-X® Client Enablement Services 6.1.x Low Upgrade to 6.2 or later.
Avaya Aura® Presence Services 6.0.x, 6.1.x Low Upgrade to 6.2 or later.
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.x thru 6.2.x Low Upgrade to 6.3.2 or later.
Avaya Aura® SIP Enablement Services 5.2.x Low See recommended actions below. This advisory will not be addressed as no further releases are planned.
Avaya Aura® System Manager 6.3.1 and earlier Low Upgrade to 6.3.2 or later.
Avaya Aura® System Platform 6.2.x and earlier Low Upgrade to 6.3 or later.
Avaya Aura® Communication Manager Utility Services 6.2.x and earlier Low Upgrade to 6.3 or later.
Avaya Voice Portal 5.x Low Ugrade to Experience Portal 7.0 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-2012-2100
This is a low risk for all products as the ext4 file system is not used by default.

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 - December 20, 2012 - Initial Statement issued.
V 2.0 - May 28, 2013 - Updated CM, CS1000, one-X CES, PS, SM, SMGR, SP and CMUS affected versions and actions.
V 3.0 - August 2, 2013 - Updated AES, AS5300 and Conferencing SE affected versions and actions.
V 4.0 - October 22, 2013 - Updated IPOAS actions.
V 5.0 - January 8, 2014 - Updated Conferencing affected versions and actions, and VP actions.
V 6.0 - March 21, 2014 - Updated Messaging affected versions and actions.
V 7.0 - June 3, 2014 - Updated AES actions.
V 8.0 - June 6, 2013 - Updated PC affected versions and actions.
V 9.0 - August 27, 2015 - Updated IQ affected versions and actions and set 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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