000034883 - RSA Authentication Manager Vulnerability in BSAFE Crypto-J (CVE-2016-8217) Not Exploitable

Document created by RSA Customer Support Employee on Mar 17, 2017
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Article Number000034883
Applies ToRSA Product Set: SecurID
RSA Product/Service Type: Authentication Manager
RSA Version/Condition: 8.1, 8.2
CVE IDCVE-2016-8217
Article Summary

Description


RSA BSAFE Crypto-J versions prior to 6.2.2 has a PKCS#12 Timing Attack Vulnerability. A possible timing attack could be carried out by modifying a PKCS#12 file that has an integrity MAC for which the password is not known. An attacker could then feed the modified PKCS#12 file to the toolkit and guess the current MAC one byte at a time. This is possible because Crypto-J uses a non-constant-time method to compare the stored MAC with the calculated MAC. This vulnerability is similar to the issue described in CVE-2015-2601.
No CVSSv3 score has been calculated by NVD yet.
(CVE-2015-2601 has a CVSSv2 score of 5.0 Medium)
Link to Advisorieshttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-8217
Alert ImpactNot Exploitable
Technical DetailsThe flaw exists but it is not exploitable
Technical Details Explanation

Response

The flaw exists but cannot be exploited.
The Authentication Manager server has no interface which allows exploitation of this timing attack against a MAC.

 

Disclaimer

Read and use the information in this RSA 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 RSA Software Technical Support at 1- 800 995 5095. RSA Security LLC and its affiliates, including without limitation, its ultimate parent company, EMC Corporation, distributes RSA Security Advisories in order to bring to the attention of users of the affected RSA products, important security information. RSA 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. RSA 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 RSA, its affiliates or suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if RSA, its affiliates or suppliers have been advised of the possibility of such damages. Some jurisdictions 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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