SNMP Vulnerability in SIMATIC CP 1543-1 and SIPLUS NET CP 1543-1 by Siemens
CVE-2016-8562

7.5HIGH

Key Information:

Vendor

Siemens
Status
Simatic Cp 1543-1 Firmware
Vendor
CVE Published:
18 November 2016

Badges

👾 Exploit Exists🟣 EPSS 14%🦅 CISA Reported

What is CVE-2016-8562?

A security flaw affects the SIMATIC CP 1543-1 and SIPLUS NET CP 1543-1, specifically versions prior to V2.0.28. Under particular circumstances, this vulnerability allows the writing of SNMP variables on port 161/udp that are intended to be read-only, which should only be configurable through the TIA-Portal. Manipulating these variables may lead to reduced system availability or even cause a denial-of-service situation, posing a significant risk to operations.

CISA has reported CVE-2016-8562

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2016-8562 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply updates per vendor instructions.

References

http://www.securityfocus.com/bid/94436
vdb-entryx_refsource_BID
https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01
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http://www.siemens.com/cert/pool/cert/siemens_security_ad...
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EPSS Score

14% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

.