OTPulse

Siemens SINEMA Remote Connect Server

Plan PatchCVSS 7.8ICS-CERT ICSA-24-193-15Jul 9, 2024
Siemens
Attack path
Attack VectorLocal
Auth RequiredLow
ComplexityLow
User InteractionNone needed
Summary

SINEMA Remote Connect Client versions before V3.2 HF1 are affected by a local command injection vulnerability (CWE-77) that allows a local user with low privileges to execute arbitrary commands with elevated privileges. The vulnerability has a CVSS score of 7.8 with high impact on confidentiality, integrity, and availability. Siemens has released a patched version (V3.2 HF1) and recommends all users update immediately. General hardening measures include implementing proper network access controls and following Siemens operational security guidelines.

What this means
What could happen
An attacker with local access to a system running SINEMA Remote Connect Client could execute arbitrary commands or gain high-level control over the device, potentially disrupting remote access capabilities and allowing unauthorized management of connected industrial systems.
Who's at risk
Organizations using Siemens SINEMA Remote Connect Client to manage remote access to industrial systems should assess their deployment. This is particularly relevant for utilities, manufacturers, and facilities using Siemens automation systems where remote engineering or diagnostic access is required.
How it could be exploited
An attacker with local user privileges on a machine running SINEMA Remote Connect Client before version 3.2 HF1 could exploit a command injection vulnerability to run arbitrary commands with elevated privileges. This could allow the attacker to compromise the client's integrity and potentially pivot to connected industrial systems managed through the remote access service.
Prerequisites
  • Local user account on the SINEMA Remote Connect Client machine
  • SINEMA Remote Connect Client version before 3.2 HF1 must be installed and running
Local privilege escalation possibleLow attack complexityAffects remote access management for critical systemsCommand injection vulnerability
Exploitability
Some exploitation risk — EPSS score 2.5%
Affected products (1)
ProductAffected VersionsFix Status
SINEMA Remote Connect Client<V3.2 HF13.2 HF1
Remediation & Mitigation
0/4
Do now
0/1
HARDENINGImplement network access controls and firewalls to limit access to SINEMA Remote Connect infrastructure from untrusted networks
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXUpdate SINEMA Remote Connect Client to version 3.2 HF1 or later
Long-term hardening
0/2
HARDENINGRestrict local user access and implement principle of least privilege on systems running SINEMA Remote Connect Client
HARDENINGFollow Siemens operational security guidelines for industrial environments including proper network segmentation
View full CISA ICS-CERT advisory
API: /api/v1/advisories/14ca17eb-a686-4d51-a353-1b0b916a5e4e

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