CVE-2016-9158

Description

A vulnerability has been identified in SIMATIC S7-300 CPU family (All versions), SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-400 V6 and earlier CPU family (All versions), SIMATIC S7-400 V7 CPU family (All versions). Specially crafted packets sent to port 80/tcp could cause the affected devices to go into defect mode. A cold restart is required to recover the system.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.15% Top 25%
Affected: Siemens AG SIMATIC S7-300 CPU family
Affected: Siemens AG SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)
Affected: Siemens AG SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants)
Affected: Siemens AG SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants)
Affected: Siemens AG SIMATIC S7-400 V6 and earlier CPU family
Affected: Siemens AG SIMATIC S7-400 V7 CPU family
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/94820 vdb entry
http://www.securitytracker.com/id/1037434 vdb entry
https://ics-cert.us-cert.gov/advisories/ICSA-16-348-05
https://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-731239.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-731239.pdf

Frequently Asked Questions

What is the severity of CVE-2016-9158?
CVE-2016-9158 has been scored as a high severity vulnerability.
How to fix CVE-2016-9158?
To fix CVE-2016-9158, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-9158 being actively exploited in the wild?
It is possible that CVE-2016-9158 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2016-9158?
CVE-2016-9158 affects Siemens AG SIMATIC S7-300 CPU family, Siemens AG SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants), Siemens AG SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants), Siemens AG SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants), Siemens AG SIMATIC S7-400 V6 and earlier CPU family, Siemens AG SIMATIC S7-400 V7 CPU family.
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