The libxml2 library is a development toolbox providing the implementation of various XML standards.
A denial of service flaw was found in libxml2, a library providing support to read, modify and write XML and HTML files. A remote attacker could provide a specially crafted XML file that, when processed by an application using libxml2, would lead to excessive CPU consumption (denial of service) based on excessive entity substitutions, even if entity substitution was disabled, which is the parser default behavior. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2014-3660 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 | 6.0 through 6.3.3 | Low | Upgrade to 6.3.3 Security Update Patch 2 or later. |
Avaya Aura® Application Server 5300:
|
2.x through 3.0 SP10 | Medium | For 2.x, upgrade to 3.0 and install SP 10 or later. For 3.x, install SP 10 or later. |
| Avaya Aura® Communication Manager | 6.0 through 6.3 | Low | Upgrade to 6.3 and install SSP05 or later. | Avaya Communication Server 1000:
|
7.x | Medium | 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 through 7.2 SP6 | Low | Upgrade to 7.2 SP 7 or later. |
| Avaya IP Office Application Server | 8.x through 9.0.x | Medium | Upgrade to 9.1 or later. |
| Avaya IQ | 5.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 to migrate to Avaya Oceanalytics for Elite. |
| Avaya Meeting Exchange | 5.x through 6.2 SP2 | Medium | Upgrade to 6.2 SP3 or later. |
| Avaya Message Networking | 6.x | Low | See recommended actions and Mitigating Factors table below. This advisory will not be addressed as no further releases are planned. |
| Avaya Aura® Messaging | 6.0 through 6.3.2 | Low | Upgrade to 6.3.3 or later. |
| Avaya one-X® Client Enablement Services | 6.1 through 6.2 SP3 | Medium | Upgrade to 6.2 SP4 or later. |
| Avaya Aura® Presence Services | 6.x | Medium | Upgrade to Aura Presence Services 7.1 or later. Further information about this version, as well as the overall Aura 7.1 release, is available on support.avaya.com. |
| Avaya Proactive Contact | 5.0 through 5.1.1 | Medium | Upgrade to 5.1.2 or later. |
| Avaya Aura® Session Manager | 6.0.x through 6.2.x | Low | Upgrade to 7.0.1.0 or later. |
| Avaya Aura® System Manager | 6.0 through 6.3.11 | Medium | Upgrade to 6.3.12 or later. |
| Avaya Aura® System Platform | 6.0 through 6.3.6 | Medium | Upgrade to 6.3.7 or later. |
| Avaya Aura® Utility Services | 6.3 through 6.3 SP7 | Medium | Upgrade to 6.3 and install SP8 or later. |
Recommended Actions for System Products:
Avaya strongly recommends following 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-2014-3660 |
The risk is rated Low for AES, CM, Conferencing, MN, Messaging, SM because XML files can be processed only by authorized local, privileged users. The risk is Medium for all other listed products because XML files can be processed only by authorized local users. |
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. |
| Avaya IQ | Depending on the Operating System installed, the affected package may be installed on the underlying Operating System supporting the Avaya IQ 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. |
Recommended Actions for Software-Only Products:
In the event that the affected package is installed, Avaya recommends following 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 - February 2, 2015 - Initial Statement issued.
V 2.0 - November 29, 2017 - Updated affected versions and actions for all products and set the advisory status to Final.
Avaya customers or Business Partners should report any security issues found with Avaya products via the standard support process.
Independent security researchers can contact Avaya at
[email protected].
Linux® is the registered trademark of Linus Torvalds in the U.S. and other countries.
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