Full Report
SINEMA Remote Connect Server before V3.2 HF1 is affected by multiple vulnerabilities. Siemens has released a new version for SINEMA Remote Connect Client and recommends to update to the latest version.
Analysis Summary
# Vulnerability: Multiple Command Injection Flaws in SINEMA Remote Connect Client
## CVE Details
- CVE ID: CVE-2024-39567, CVE-2024-39568, CVE-2024-39569
- CVSS Score: 7.8 (High) for CVE-2024-39567/39568; 6.6 (Medium) for CVE-2024-39569 (CVSS v3.1)
- CWE: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
## Affected Systems
- Products: SINEMA Remote Connect Client
- Versions: All versions before V3.2 HF1
- Configurations: Affects applications loading VPN configurations (for 39567, 39569) and proxy configurations (for 39568).
## Vulnerability Description
The SINEMA Remote Connect Client is affected by multiple command injection flaws due to missing server-side input sanitation when processing configuration files (VPN and proxy settings).
1. **CVE-2024-39567 & CVE-2024-39568 (Local Attack):** An authenticated local attacker can exploit flaws when loading VPN or proxy configurations, respectively, to execute arbitrary code with system privileges on the affected client machine.
2. **CVE-2024-39569 (Remote Attack):** An administrative remote attacker, controlling a corresponding SINEMA Remote Connect Server, can exploit a flaw when loading VPN configurations to execute arbitrary code with system privileges on the target client system.
## Exploitation
- Status: PoC information suggests Exploitation in the wild or a high likelihood of exploitability, as the advisory lists the E (Exploit Code Maturity) metric as 'P' (Proof-of-Concept) in the detailed vectors, typically indicating known exploitability.
- Complexity: Medium (Requires authentication for CVE-39567/39568; Requires administrative control of the server for CVE-39569, but the attack vector is Remote Network).
- Attack Vector: Local (CVE-39567, 39568); Network (CVE-39569)
## Impact
| Metric | Impact Level |
| :--- | :--- |
| Confidentiality | High (H) |
| Integrity | High (H) |
| Availability | High (H) |
## Remediation
### Patches
- Update SINEMA Remote Connect Client to **V3.2 HF1 or later version**.
- Vendor link for updates: hxxps://support.industry.siemens.com/cs/ww/en/view/109954687/
### Workarounds
- Siemens recommends following the **General Security Recommendations** provided in the advisory, which emphasizes protecting network access to devices using appropriate mechanisms.
- Configure the environment according to Siemens' operational guidelines for Industrial Security.
## Detection
- Detection of command execution attempts originating from the SINEMA Remote Connect Client process, particularly during configuration loading events, should be monitored.
- Intrusion Detection Systems (IDS/IPS) should be configured to inspect network traffic for potential command injection payloads targeting the VPN/Proxy configuration channels, although the local/authenticated aspects limit easy network detection for the two higher severity flaws.
## References
- Siemens Security Advisory SSA-868282
- Vendor advisories: hxxps://cert-portal.siemens.com/productcert/html/ssa-868282.html