Expat is a C library used to parse XML documents.
A denial of service flaw was found in the implementation of hash arrays in Expat. An attacker could use this flaw to make an application using Expat consume an excessive amount of CPU time by providing a specially-crafted XML file that triggers multiple hash function collisions. To mitigate this issue, randomization has been added to the hash function to reduce the chance of an attacker successfully causing intentional collisions. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2012-0876 to this issue.
A memory leak flaw was found in Expat. If an XML file processed by an application linked against Expat triggered a memory re-allocation failure, Expat failed to free the previously allocated memory. This could cause the application to exit unexpectedly or crash when all available memory is exhausted. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2012-1148 to this issue.
More information about these vulnerabilities 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.x | Low | For 6.1.x and earlier upgrade to 6.2 and install Linux Security Patch 1 as described in PSN003992u. For 6.2 install Linux Security Patch 1 as described in PSN003992u For 6.3, upgrade to 6.3.3 or later. |
Avaya Aura® Application Server 5300:
|
2.0 without PB28 | Low | Install Patch Bundle 28 or later or upgrade to 3.0 or later. |
| Avaya Aura® Communication Manager | 6.0 thru 6.2.x | Low | Upgrade to 6.3 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 Aura® Experience Portal | 6.0, 6.0.1 | Low | Upgrade to Experience Portal 6.0.2 and Avaya Enterprise Linux for Experience Portal 6.0.2. |
| Avaya IP Office Application Server | 6.x, 7.x, 8.x | Low | Upgrade to 9.0 or later. |
| Avaya IQ | 5.2 thru 5.2.5 | Low | Upgrade to 5.2.6 and install Patch 2 or later. |
| Avaya Meeting Exchange | 5.x | Low | Upgrade to 6.2 or later. |
| Avaya Aura® Messaging | 6.0 thru 6.2 | Low | Upgrade to 6.3 or later. |
| Avaya Aura® Presence Services | 6.0.x, 6.1.x | Low | Upgrade to 6.2 or later. |
| Avaya Proactive Contact | 5.0.x | Low | Upgrade to 5.1 or later. |
| Avaya Aura® Session Manager | 1.x, 5.x, 6.0.x, 6.1.x | Low | Upgrade to 6.2 or later. |
| Avaya Aura® SIP Enablement Services | 5.x | Low | See recommended actions below. This advisory will not be addressed as no further releases are planned. |
| Avaya Aura® System Manager | 5.x, 6.0.x thru 6.2.x | Low | Upgrade to 6.3 or later. |
| Avaya Aura® System Platform | 1.x, 6.0.x, 6.2, 6.2.1 | Low | Upgrade to 6.2.2 or later. |
| Avaya Aura® Communication Manager Utility Services | 6.0.x, 6.1.x, 6.2 | Low | For 6.0.x and 6.1.x upgrade to 6.3 and install patch 6.2.5.0.15 or later. For 6.2 install patch 6.2.5.0.15 or later. |
| Avaya Voice Portal | 5.0.x thru 5.1.2 | Low | Upgrade to Avaya Enterprise Linux for Voice Portal 5.1.3 and Voice Portal 5.1.3 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.
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-2012-0876 |
Rated a Low Risk for AES, CM, EP, Messaging, SES and VP since Expat
is installed but not used by these products. Rated a Low Risk for the remaining affected products because only users with administrative privileges are allowed to download XML files. |
|
CVE-2012-1148 |
Rated a Low Risk for all products since no critical processes or applications would be affected. |
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.
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 - July 31, 2012 - Initial Statement issued.
V 2.0 - August 28, 2013 - Updated AES, AS5300, CM, Conferencing SE, EP, MX, PS, PC, SMGR, SP, CMUS and VP affected versions and actions.
V 3.0 - August 27, 2015 - Updated IQ, Messaging affected versions and actions and AES, IPOAS 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 [email protected].
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