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Category:   Device (Embedded Server/Appliance)  >   Siemens SIMATIC Controller Vendors:   Siemens
Siemens SIMATIC Controller Flaws Let Remote Users Obtain Credentials and Cause Denial of Service Conditions
SecurityTracker Alert ID:  1037434
SecurityTracker URL:  http://securitytracker.com/id/1037434
CVE Reference:   CVE-2016-9158, CVE-2016-9159   (Links to External Site)
Date:  Dec 13 2016
Impact:   Denial of service via network, Disclosure of authentication information
Vendor Confirmed:  Yes  
Version(s): S7-300, S7-400
Description:   Two vulnerabilities were reported in Siemens SIMATIC S7-300 and S7-400 Controllers. A remote user can cause the target system to crash. A remote user can obtain credentials on the target system.

A remote user can send specially crafted packets to TCP port 80 to cause the target device to enter defect mode [CVE-2016-9158]. A cold restart is required to return the system to normal operations. S7-300 PN CPUs, S7-400 PN V6 CPUs, and S7-400 V7 PN CPUs.

A remote user can send a specially crafted request to TCP port 102 to obtain credentials from the target device [CVE-2016-9159]. Systems configured with protection-level 2 are affected.

Zhu WenZhe from Beijing Acorn Network Technology Co., Ltd. reported these vulnerabilities via ICS-CERT.

Impact:   A remote user can cause the target system to crash.

A remote user can obtain credentials on the target system.

Solution:   No solution was available at the time of this entry.

The vendor has described mitigation steps in their advisory.

The vendor advisory is available at:

http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-731239.pdf

Vendor URL:  www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-731239.pdf (Links to External Site)
Cause:   Not specified

Message History:   None.


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