Wind River has released a security advisory pertaining to their embedded version of Linux. This advisory contains vulnerabilities that may affect Avaya systems.
Buffer overflow in the xfs_readlink function in fs/xfs/xfs_vnodeops.c in XFS in the Linux kernel 2.6, when CONFIG_XFS_DEBUG is disabled, allows local users to cause a denial of service (memory corruption and crash) and possibly execute arbitrary code via an XFS image containing a symbolic link with a long pathname. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2011-4077 to this issue.
More information about this vulnerability can be found in the security advisory issued by Wind River (A login is required):
|Product:||Affected Version(s):||Risk Level:||Actions:||Avaya 96x1 IP Deskphones||6.x||None||See Mitigating Factors table below|
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:
||The risk is rated None for Avaya 96x1 IP Deskphones since the XFS file system is not installed as part of the kernel.|
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.
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V 1.0 - May 24, 2012 - Initial Statement issued.
V 2.0 - July 2, 2012 - Revised Severity and Mitigating factors section based on additional inputs from the product.
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