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Multiple Vulnerabilities in SINEC NMS Before V3.0 SP1

Act Now8.4SSA-331112Nov 12, 2024
Attack VectorLocal
Auth RequiredLow
ComplexityLow
User InteractionNone needed
Summary

SINEC NMS before V3.0 SP1 contains multiple vulnerabilities related to input validation (CWE-20, CWE-787), resource management and limits (CWE-400, CWE-770, CWE-772), error handling (CWE-754), SSL/TLS certificate validation (CWE-295, CWE-297), file permissions (CWE-732), and HTTP header injection (CWE-113). These flaws allow a local attacker with user privileges to modify system data, cause denial of service, or escalate privileges within the management platform. No remote exploitation is possible (local access required), but the high EPSS score (89.4%) indicates significant exploitation likelihood once an attacker has initial access to the management workstation or server.

What this means
What could happen
An attacker with local access to the SINEC NMS system could exploit multiple vulnerabilities to modify data and interrupt operations, or escalate privileges across the management platform.
Who's at risk
Network management and monitoring personnel who use SINEC NMS to manage Siemens industrial networks and connected devices. Any utility or plant that depends on SINEC NMS for visibility and control of PLCs, remote terminal units (RTUs), and other networked ICS equipment should treat this as affecting their operational safety and monitoring capabilities.
How it could be exploited
An attacker with a user account on the SINEC NMS workstation or server could exploit input validation and resource management flaws to escalate privileges, modify system configuration, or cause the management application to crash, disrupting visibility and control of your networked ICS/SCADA devices.
Prerequisites
  • Local user account on the SINEC NMS workstation or server
  • Low privileges are sufficient (CVSS PR:L indicates privilege escalation is possible)
  • No authentication bypass required if attacker has initial user access
High EPSS score (89.4%)Affects integrity and availabilityPrivilege escalation possibleMultiple vulnerability classes (input validation, resource management, SSL/TLS issues)Management system compromise could cascade to controlled devices
Exploitability
High exploit probability (EPSS 89.4%)
Affected products (1)
ProductAffected VersionsFix Status
SINEC NMSAll versions < V3.0 SP13.0 SP1
Remediation & Mitigation
0/1
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXUpdate SINEC NMS to version 3.0 SP1 or later
View full Siemens ProductCERT advisory
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