Multiple Vulnerabilities in SINEC NMS Before V3.0

Act Now9.1SSA-784301Aug 13, 2024

Attack VectorNetwork

Auth RequiredHigh

ComplexityLow

User InteractionNone needed

Summary

SINEC NMS before V3.0 is affected by multiple critical vulnerabilities including use-after-free (CWE-416), improper input validation (CWE-20), unsafe deserialization (CWE-502), buffer overflow (CWE-119), denial of service (CWE-400, CWE-770), out-of-bounds read (CWE-125), improper access control (CWE-863), and path traversal (CWE-22) vulnerabilities. The issues span privilege escalation, remote code execution, and denial of service attack vectors.

What this means

What could happen

An attacker with network access to SINEC NMS could execute arbitrary commands with system privileges, cause the network management system to crash, or access sensitive network configuration data. If SINEC NMS manages critical infrastructure like power distribution or water treatment networks, this could lead to loss of visibility and control over those systems.

Who's at risk

This affects organizations running Siemens SINEC NMS for network management and monitoring of industrial control systems, particularly those managing critical infrastructure networks such as power distribution, water utilities, and large manufacturing facilities. IT and OT teams responsible for network management and visibility should prioritize this update.

How it could be exploited

An attacker on the network can send specially crafted requests to SINEC NMS to trigger memory corruption, deserialization, or validation bypass vulnerabilities. Depending on the specific flaw, this could allow remote code execution or denial of service without requiring authentication, potentially giving the attacker control over network management functions.

Prerequisites

Network access to SINEC NMS service port
Affected version (before V3.0) deployed and running

remotely exploitableno authentication requiredlow complexityactively exploited (KEV)high EPSS score (94.5%)affects network management and monitoring systems

Exploitability

Actively exploited — confirmed by CISA KEV

Affected products (1)

ProductAffected VersionsFix Status

SINEC NMS<V3.03.0

Remediation & Mitigation

0/3

Do now

0/2

HOTFIXUpdate SINEC NMS to version 3.0 or later

WORKAROUNDRestrict network access to SINEC NMS management interfaces to trusted administrative systems only using firewall rules

Long-term hardening

0/1

HARDENINGImplement network segmentation to isolate SINEC NMS from untrusted network segments

CVEs (29)

View full Siemens ProductCERT advisory

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