The libgcrypt library provides general-purpose implementations of various cryptographic algorithms.
It was found that GnuPG was vulnerable to the Yarom/Falkner flush+reload cache side-channel attack on the RSA secret exponent. An attacker able to execute a process on the logical CPU that shared the L3 cache with the GnuPG process (such as a different local user or a user of a KVM guest running on the same host with the kernel same-page merging functionality enabled) could possibly use this flaw to obtain portions of the RSA secret key. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2013-4242 to this issue.
More information about this vulnerability can be found in the security advisory issued by Red Hat:
| Product: | Affected Version(s): | Risk Level: | Actions: |
|---|---|---|---|
| Avaya Aura® Application Enablement Services | 5.x, 6.0 thru 6.3.1 | Low | Upgrade to 6.3.3 or later. |
Avaya Aura® Application Server 5300:
|
2.0, 3.0 without SP7 | Low | For 2.0 upgrade to 3.0 and install Service Pack 7 or later. For 3.0 install Service Pack 7 or later. |
| Avaya IQ | 5.2 thru 5.2.5 | Low | Upgrade to 5.2.6 and install Patch 2 or later. |
| Avaya CMS | R17.x | Low | Upgrade to R17 R3 as detailed in PCN1606S or later. |
| Avaya Aura® Collaboration Environment | 2.0, 2.0 SP2 | Low | Upgrade to 3.0 or later. |
| Avaya Aura® Communication Manager | 6.0 thru 6.3 | Low | For 6.0, 6.1, 6.2, upgrade to 6.3 and install CM 6.3 SSP 303 or later. For 6.3, install CM 6.3 SSP 303 or later. |
Avaya Communication Server 1000:
|
6.0.x | None | See Mitigating Factors table below. Upgrade to 7.0 or later. |
| Avaya Aura® Conferencing | 7.0 thru 7.2 SP2 | Low | Upgrade to 7.2 SP3 or later. |
| Avaya Aura® Conferencing Standard Edition | 6.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 Aura® Conferencing 7.0 or later. |
| Avaya Aura® Experience Portal | 6.0 through 6.0.2 | Low | For 6.x, upgrade to 6.0.3 and Avaya Linux for EP 6.0.3 and install Security Updates for 6.0.3. |
| Avaya IP Office Server Edition | 8.1, 9.0, 9.0.1, 9.0.2 | Low | Upgrade to 9.0.3 or later. |
| Avaya IP Office Application Server | 8.x, 9.0, 9.0.1, 9.0.2 | Low | Upgrade to 9.0.3 or later. |
| Avaya Aura® Messaging | 6.0 thru 6.3.2 | Low | Upgrade to 6.3.2 SP2 or later. |
| Avaya one-X® Client Enablement Services | 6.1.x | Low | Upgrade to 6.2 SP2 or later. |
| Avaya Aura® Presence Services | 5.2.x, 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 thru 5.1 | Low | Upgrade to 5.1.1 or later. |
| Avaya Aura® Session Manager | 5.x, 6.0 thru 6.3.7 | Low | Upgrade to 6.3.8 or later. |
| Avaya Aura® System Manager | 5.x, 6.0 thru 6.3.7 | Low | Upgrade to 6.3.8 or later. |
| Avaya Aura® System Platform | 1.x, 6.0 thru 6.3.3 | Low | Upgrade to 6.3.4 or later. |
| Avaya Aura® Communication Manager Utility Services | 6.0 thru 6.3 | Low | For 6.0, 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. For 6.3, install 6.3.3.0.20 or later |
| Avaya Voice Portal | 5.x | Low | See recommended actions and Mitigating Factors table below. This advisory will not be addressed as there will be no further releases. It is recommended to upgrade to Avaya Aura® Experience Portal. |
Recommended Actions for System Products:
Avaya strongly recommends following the
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 the System Product operating system or
application should not be modified unless the change is
approved by Avaya.
Making changes that are not approved may void the Avaya product service contract.
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-2013-4242 |
The risk is rated Low for all products except CS1000 because only privileged users can execute processes and exploiting this vulnerability will not gain them additional capabilities. The risk is rated None for CS1000 because libgcrypt is not used. Additionally, GnuPG required to exploit this vulnerability is not installed in version 7.0 or later. |
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 | Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the AES application. |
| CVLAN | Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the CVLAN application. |
| Avaya Aura® Experience Portal | Depending on the Operating System installed, 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 installed, the affected package may be installed on the underlying Operating System supporting the IMS application. |
| Avaya Aura® Presence Services | Depending on the Operating System installed, 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 installed, the affected package may be installed on the underlying Operating System supporting the SAL Gateway application. |
| Avaya Voice Portal | Depending on the Operating System installed, 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 following the recommended actions supplied by Red Hat regarding their Enterprise Linux.
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.
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.
V 1.0 - December 6, 2013 - Initial Statement issued.
V 2.0 - July 22, 2015 - Updated affected versions and actions for AES, IQ, CM, Conferencing, EP, Messaging, Proactive Contact, SM, SMGR, SP, US and One-X CES, and actions for AS5300, CMS, CE, IP Office, IPOAS, and VP.
V 3.0 - October 21, 2015 - Updated affected versions and actions for PS, 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 [email protected].
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