Siemens SINEC INS
Plan Patch8.1ICS-CERT ICSA-23-348-16Dec 12, 2023
Attack VectorNetwork
Auth RequiredNone
ComplexityHigh
User InteractionNone needed
Summary
SINEC INS versions before 1.0 SP2 Update 2 contain multiple vulnerabilities related to input validation (CWE-20), certificate validation bypass (CWE-295), command injection (CWE-78), and error handling flaws. These weaknesses allow unauthenticated attackers with network access to execute arbitrary code, bypass access controls, or retrieve sensitive operational and configuration data from the network management application.
What this means
What could happen
An attacker with network access to SINEC INS could execute arbitrary code, bypass authentication, or access sensitive configuration and operational data, potentially disrupting network management and control system visibility across your industrial network.
Who's at risk
Water authorities and electric utilities using Siemens SINEC INS for industrial network management and monitoring. Any organization relying on SINEC INS for visibility into PLC and device status is affected.
How it could be exploited
An attacker on the network sends a malicious request to the SINEC INS webserver exploiting one of several input validation or authentication bypass flaws (CWE-20, CWE-295, CWE-78). The application fails to validate or properly handle the request, allowing the attacker to execute commands on the server or read protected data without proper credentials.
Prerequisites
- Network access to SINEC INS webserver (typically port 443 or 80)
- SINEC INS version earlier than 1.0 SP2 Update 2 must be deployed
remotely exploitableno authentication required for some attack vectorsaffects network management visibilityCVSS 8.1 (high severity)
Exploitability
Low exploit probability (EPSS 0.9%)
Affected products (1)
ProductAffected VersionsFix Status
SINEC INS<V1.0 SP2 Update 21.0 SP2 Update 2
Remediation & Mitigation
0/4
Do now
0/1WORKAROUNDRestrict webserver access to trusted internal IP addresses and users only using firewall rules or application access controls
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HOTFIXUpdate SINEC INS to version 1.0 SP2 Update 2 or later
Long-term hardening
0/2HARDENINGIsolate SINEC INS and control system networks from business networks and internet using firewalls and network segmentation
HARDENINGIf remote access is required, route traffic through a VPN with current security patches
CVEs (7)
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API:
/api/v1/advisories/d667dd96-ec4a-4e60-9639-bdb030b2c420