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Category:   Application (Generic)  >   IBM Rational ClearQuest Vendors:   IBM
(IBM Issues Fix for IBM Rational ClearQuest) OpenSSL DSA Signing Constant Timing Bug May Let Remote Users Obtain Potentially Sensitive Information on the Target System
SecurityTracker Alert ID:  1038094
SecurityTracker URL:  http://securitytracker.com/id/1038094
CVE Reference:   CVE-2016-2178   (Links to External Site)
Date:  Mar 22 2017
Impact:   Disclosure of authentication information, Disclosure of system information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.1 - 7.1.2.19, 8.0 - 8.0.0.20, 8.0.1 - 8.0.1.13, 9.0 - 9.0.0.3
Description:   A vulnerability was reported in OpenSSL. A remote user can obtain potentially sensitive information on the target system. IBM Rational ClearQuest is affected.

The DSA signing algorithm may fail to run in constant time when the BN_FLG_CONSTTIME flag is set. A remote user may be able to exploit this to obtain potentially sensitive timing information regarding the cryptographic signature process, including the DSA private key.

The original advisory is available at:

http://eprint.iacr.org/2016/594.pdf

Cesar Pereida (Aalto University), Billy Brumley (Tampere University of Technology), and Yuval Yarom (The University of Adelaide and NICTA) reported this vulnerability.

Impact:   A remote user can obtain potentially sensitive timing information regarding the cryptographic signature process, including the DSA private key.
Solution:   IBM has issued a fix for IBM Rational ClearQuest (8.0.0.21, 8.0.1.14, 9.0.0.4).

The IBM advisory is available at:

http://www-01.ibm.com/support/docview.wss?uid=swg21994995

Vendor URL:  www-01.ibm.com/support/docview.wss?uid=swg21994995 (Links to External Site)
Cause:   State error
Underlying OS:  Linux (Any), UNIX (AIX), UNIX (HP/UX), UNIX (Solaris - SunOS), Windows (Any)

Message History:   This archive entry is a follow-up to the message listed below.
Jun 8 2016 OpenSSL DSA Signing Constant Timing Bug May Let Remote Users Obtain Potentially Sensitive Information on the Target System



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