Full Report
Multiple third-party component vulnerabilities were reported for the Busybox applet, the Linux Kernel, OpenSSL, OpenVPN and various other components used by the RUGGEDCOM and SCALANCE products. The vulnerabilities range from improper neutralization of special elements to improper handling of commands under certain circumstances, that could lead to code injection and denial of service. Siemens has released updates for the affected products and recommends to update to the latest versions.
Analysis Summary
# Vulnerability: Multiple Third-Party Component Vulnerabilities in RUGGEDCOM and SCALANCE
## CVE Details
*Note: This specific advisory (SSA-419740) acts as a cumulative report for multiple vulnerabilities in third-party components (Busybox, Linux Kernel, OpenSSL, OpenVPN). The representative score provided for the primary affected product is:*
- **CVE ID:** Multiple (See references for full list of associated third-party CVEs)
- **CVSS Score:** 9.8 (Critical) / 7.5 (High) for RM1224
- **CWE:** CWE-20 (Improper Input Validation), CWE-78 (OS Command Injection), CWE-400 (Uncontrolled Resource Consumption)
## Affected Systems
- **Products:**
- RUGGEDCOM RM1224 LTE (4G) EU (6GK6108-4AM00-2BA2)
- SCALANCE M-800 series (implied by title/summary)
- SCALANCE S615 (implied by title/summary)
- **Versions:** All versions prior to V7.2
- **Configurations:** Systems utilizing integrated Busybox applets, Linux Kernel networking stacks, OpenSSL, or OpenVPN services.
## Vulnerability Description
The affected products incorporate several open-source and third-party components that contain known security flaws. The technical issues include:
1. **Improper Neutralization:** Failure to filter special elements which can lead to OS command injection.
2. **Memory/Command Handling:** Improper handling of specific commands under specific conditions, leading to Denial of Service (DoS) or unexpected code execution.
3. **Protocol Flaws:** Vulnerabilities within OpenSSL and OpenVPN stacks that may affect encrypted communication channels.
## Exploitation
- **Status:** PoC available (Exploits exist for many of the underlying third-party CVEs such as those in Busybox and older Linux Kernels).
- **Complexity:** Low
- **Attack Vector:** Network
## Impact
- **Confidentiality:** High (Potential for data interception via OpenSSL/OpenVPN flaws).
- **Integrity:** High (Potential for unauthorized command execution).
- **Availability:** High (Potential for system crashes or service disruption via DoS).
## Remediation
### Patches
Siemens has released a unified firmware update to address these vulnerabilities:
- **Update to V7.2 or later** for all affected RUGGEDCOM and SCALANCE products.
### Workarounds
- Restrict network access to the device management interfaces using firewalls.
- Disable unused services (e.g., OpenVPN) if not required for operations.
- Ensure the devices are operated within a protected network segment (Cell protection concept).
## Detection
- **Indicators of Compromise:** Unexpected reboots, unauthorized changes to configuration files, or unusual outbound traffic from the device.
- **Detection Methods:** Vulnerability scanners (e.g., Nessus, OpenVAS) identifying outdated Busybox or OpenSSL versions on the device management ports.
## References
- **Vendor Advisory:** hxxps://cert-portal[.]siemens[.]com/productcert/pdf/ssa-419740[.]pdf
- **Siemens ProductCERT:** hxxps://www[.]siemens[.]com/cert/advisories
- **Terms of Use:** hxxps://www[.]siemens[.]com/terms_of_use