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Category:   Application (Generic)  >   Siemens SIMATIC WinCC Vendors:   Siemens
(Siemens Issues Fix for SIMATIC WinCC) OpenSSL TLS Heartbeat Buffer Overread Lets Remote Users Obtain Potentially Sensitive Information
SecurityTracker Alert ID:  1031221
SecurityTracker URL:  http://securitytracker.com/id/1031221
CVE Reference:   CVE-2014-0160   (Links to External Site)
Date:  Nov 17 2014
Impact:   Disclosure of authentication information, Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): WinCC OA only V3.12
Description:   A vulnerability was reported in OpenSSL. A remote user can obtain potentially sensitive information. Siemens SIMATIC WinCC is affected.

A remote client or server can trigger a buffer overread in the processing of the TLS heartbeat extension to obtain up to 64k of memory (per heartbeat request), potentially including encryption keys.

The vulnerability was introduced to the source code in December 2011 and to release version 1.0.1 in March 2012.

[Editor's note: This vulnerability is known as the OpenSSL heartbleed vulnerability.]

Neel Mehta of Google Security reported this vulnerability.

Impact:   A remote user can obtain potentially sensitive information, including encryption keys.
Solution:   Siemens has issued a fix for SIMATIC WinCC (OA version 3.12-P006).

The Siemens advisory is available at:

http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-635659.pdf

Vendor URL:  www.openssl.org/news/secadv_20140407.txt (Links to External Site)
Cause:   Access control error, Boundary error

Message History:   This archive entry is a follow-up to the message listed below.
Apr 8 2014 OpenSSL TLS Heartbeat Buffer Overread Lets Remote Users Obtain Potentially Sensitive Information



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