000033826 - RSA Authentication Manager 8.2 Multiple Open SSL Vulnerabilities - False Positive

Document created by RSA Customer Support Employee on Aug 26, 2016
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Article Number000033826
Applies ToRSA Authentication Manager 8.2
CVE IDCVE-2016-2177, CVE-2016-2178
Article SummaryInformation requested by RSA Customer Support regarding the impact of certain vulnerabilities announced by the openssl.org group in June and July 2016.  The vulnerabilities discussed are:
  • CVE-2016-2177 - openssl: Possible integer overflow vulnerabilities in codebase
  • CVE-2016-2178 - openssl: Non-constant time codepath followed for certain operations in DSA implementation
Link to Advisorieshttps://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-2177

Alert ImpactNot Exploitable
Technical DetailsThe flaw exists but it is not exploitable
Technical Details ExplanationData from OpenSSL and NVD


OpenSSL through 1.0.2h incorrectly uses pointer arithmetic for heap-buffer boundary checks, which might allow remote attackers to cause a denial of service (integer overflow and application crash) or possibly have unspecified other impact by leveraging unexpected malloc behavior, related to s3_srvr.c, ssl_sess.c, and t1_lib.c.
Response: The flaw exists but cannot be exploited.
Authentication Manager provides no way to control or cause the error. The issue identifies a pointer arithmetic problem which occurs locally. It does not appear that the adversary has any control to be able to make the comparison error occur at will (as it depends on an overflow based on a malloc result).


The dsa_sign_setup function in crypto/dsa/dsa_ossl.c in OpenSSL through 1.0.2h does not properly ensure the use of constant-time operations, which makes it easier for local users to discover a DSA private key via a timing side-channel attack.
Response: The flaw exists but cannot be exploited.
Authentication Manager does not use DSA certificates.



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