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ESA-2013-035: EMC Avamar Client Improper Certificate Validation Vulnerability 


EMC Identifier: ESA-2013-035


CVE Identifier: CVE-2013-0945


Severity Rating: CVSS v2 Base Score: 7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)


Affected products:  


EMC Avamar Client version 6.x and earlier


Summary:  

An improper certificate validation vulnerability may exist in EMC Avamar Client in certain circumstances. 


Details:  

When the server to client certificate-based authentication is configured, the EMC Avamar Client does not correctly validate the values in the Common Name (CN) and Subject Alternative Name (SAN) field of the Avamar Server certificate. This could potentially allow spoofing attacks. 


Resolution:  

The following EMC Avamar product contains a resolution to this issue:

EMC Avamar Client Hotfix # 50184 (client version 6.1.101-89)

This hotfix first requires the EMC Avamar Server to be upgraded to 6.1.0 or newer.
If your Avamar Server is already at 6.1.0 or newer, then you can upgrade your client version to 6.1.101-89.  See http://solutions.emc.com/emcsolutionview.asp?id=esg135935 for detailed instructions.
To schedule an Avamar server upgrade, or if you have any questions or concerns about the above resolution, please contact EMC Technical Support at http://www.emc.com/contact.

[The following is standard text included in all security advisories.  Please do not change or delete.]

Read and use the information in this EMC Security Advisory to assist in avoiding any situation that might arise from the problems described herein. If you have any questions regarding this product alert, contact EMC Software Technical Support at 1-877-534-2867.

For an explanation of Severity Ratings, refer to EMC Knowledgebase solution emc218831. EMC recommends all customers take into account both the base score and any relevant temporal and environmental scores which may impact the potential severity associated with particular security vulnerability.

EMC Corporation distributes EMC Security Advisories, in order to bring to the attention of users of the affected EMC products, important security information. EMC recommends that all users determine the applicability of this information to their individual situations and take appropriate action. The information set forth herein is provided "as is" without warranty of any kind. EMC disclaims all warranties, either express or implied, including the warranties of merchantability, fitness for a particular purpose, title and non-infringement. In no event, shall EMC or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if EMC or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation may not apply.

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