CVE-2016-8562

Siemens SIMATIC CP 1543-1 Improper Privilege Management Vulnerability

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

*SSVC

Descriptions

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.

Se ha identificado una vulnerabilidad en SIMATIC CP 1543-1 (Todas las versiones < V2.0.28), SIPLUS NET CP 1543-1 (Todas las versiones < V2.0.28). En condiciones especiales era posible escribir variables SNMP en el puerto 161/udp que deberían ser de sólo lectura y sólo deberían configurarse con TIA-Portal. Una escritura en estas variables podría reducir la disponibilidad o causar una denegación de servicio

An improper privilege management vulnerability exists within the Siemens SIMATIC Communication Processor (CP) that allows a privileged attacker to remotely cause a denial of service.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-10-07 CVE Reserved
2016-11-18 CVE Published
2022-03-03 Exploited in Wild
2022-03-24 KEV Due Date
2024-07-25 EPSS Updated
2024-08-06 CVE Updated
---------- First Exploit

CWE

CAPEC

References (4)

URL	Tag	Source
http://www.securityfocus.com/bid/94436	Broken Link
https://ics-cert.us-cert.gov/advisories/ICSA-16-327-01	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-672373.pdf	2024-07-24

URL	Date	SRC
https://cert-portal.siemens.com/productcert/pdf/ssa-672373.pdf	2024-07-24

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Siemens Search vendor "Siemens"	Simatic Cp 1543-1 Firmware Search vendor "Siemens" for product "Simatic Cp 1543-1 Firmware"	< 2.0.28 Search vendor "Siemens" for product "Simatic Cp 1543-1 Firmware" and version " < 2.0.28"	-	Affected	in	Siemens Search vendor "Siemens"	Simatic Cp 1543-1 Search vendor "Siemens" for product "Simatic Cp 1543-1"	-	-	Safe
Siemens Search vendor "Siemens"	Siplus Net Cp 1543-1 Firmware Search vendor "Siemens" for product "Siplus Net Cp 1543-1 Firmware"	< 2.0.28 Search vendor "Siemens" for product "Siplus Net Cp 1543-1 Firmware" and version " < 2.0.28"	-	Affected	in	Siemens Search vendor "Siemens"	Siplus Net Cp 1543-1 Search vendor "Siemens" for product "Siplus Net Cp 1543-1"	-	-	Safe