CVE-2016-8562 on CISA KEV

A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP 1543-1 (All versions < V2.0.28). Under special conditions it was possible to write SNMP variables on port 161/udp which should be read-only and should only be configured with TI

01What CISA says about this vulnerability

A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP 1543-1 (All versions < V2.0.28). Under special conditions it was possible to write SNMP variables on port 161/udp which should be read-only and should only be configured with TIA-Portal. A write to these variables could reduce the availability or cause a denial-of-service.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• www.securityfocus.com — http://www.securityfocus.com/bid/94436
• ics-cert.us-cert.gov — https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01
• www.siemens.com — http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

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