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

[Security Alert <Security_Alert@xxxxxxx>]

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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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