Full Report
SIDIS Secured SmartPlug before V7.26.0310 is affected by multiple vulnerabilities in the components OpenSSL, OpenSSH, and several other packages as described below. Siemens has released a new version of SIDIS Secured SmartPlug and recommends to update to the latest version.
Analysis Summary
# Vulnerability: Multiple Vulnerabilities in SIDIS Secured SmartPlug
## CVE Details
This advisory covers 12 identified vulnerabilities. The most critical are highlighted below:
- **CVE-2022-23303**: CVSS 9.8 (Critical) | CWE-924 (Message Integrity)
- **CVE-2026-5121**: CVSS 7.5 (High) | CWE-190 (Integer Overflow)
- **CVE-2022-48174**: CVSS 7.8 (High) | CWE-787 (Out-of-bounds Write)
- **CVE-2025-5914**: CVSS 5.9 (Medium) | CWE-125 (Out-of-bounds Read)
- **CVE-2025-26465**: CVSS 6.8 (Medium) | CWE-390 (Error Handling)
- **Other CVEs**: CVE-2022-23304, CVE-2022-37660, CVE-2025-5222, CVE-2025-9230, CVE-2025-9231, CVE-2025-9232, CVE-2025-32462.
## Affected Systems
- **Products**: SIDIS Secured SmartPlug (Commissioning and test system for vehicle ECU production).
- **Versions**: All versions prior to V7.26.0310.
- **Configurations**: Systems utilizing OpenSSL, OpenSSH, BusyBox (ash), libarchive, sudo, and wireless components (hostapd/wpa_supplicant).
## Vulnerability Description
The SIDIS Secured SmartPlug contains multiple security flaws stemming from outdated third-party components:
- **Wireless Security**: Side-channel attacks in SAE and EAP-pwd implementations (hostapd/wpa_supplicant) and key reuse in PKEX association.
- **Memory Safety**: Stack overflows in BusyBox (ash) and integer overflows in libarchive (32-bit systems) that could lead to heap buffer overflows.
- **OpenSSL/OpenSSH**: Out-of-bounds reads in OpenSSL's HTTP client and machine-in-the-middle (MitM) risks in OpenSSH when `VerifyHostKeyDNS` is enabled.
- **Logic Flaws**: Incorrect authorization in `sudo` regarding host specification and buffer overflows in International Components for Unicode (ICU).
## Exploitation
- **Status**: PoC status not explicitly stated, but several components (BusyBox, OpenSSL, libarchive) have well-documented exploit vectors.
- **Complexity**: Ranges from **Low** (CVE-2022-23303) to **High** (CVE-2025-26465, which requires memory exhaustion).
- **Attack Vector**: Primarily **Network** (Wireless and OpenSSL flaws), though some require **Local** access (BusyBox, sudo).
## Impact
- **Confidentiality**: **High** (Potential for arbitrary code execution and side-channel data leakage).
- **Integrity**: **High** (Potential for unauthorized command execution via sudo and system modification).
- **Availability**: **High** (Stack/Heap overflows can lead to service crashes or total system compromise).
## Remediation
### Patches
- **Update to V7.26.0310** or later. Siemens has released this version specifically to address these component vulnerabilities.
### Workarounds
- **Network Isolation**: Protect network access to devices using firewalls or VLANs.
- **Operational Guidelines**: Follow Siemens' operational guidelines for Industrial Security.
- **OpenSSH Config**: Disable `VerifyHostKeyDNS` if not required to mitigate MitM risks.
## Detection
- **Indicators of compromise**: Unusual memory usage (related to OpenSSH memory exhaustion attempts), unexpected command execution via sudo, or abnormal wireless authentication patterns.
- **Detection methods**: Asset scanning to identify vulnerable firmware versions (< V7.26.0310) and monitoring system logs for stack/heap fault errors.
## References
- Siemens Security Advisory: hxxps://cert-portal[.]siemens[.]com/productcert/html/ssa-585531.html
- Siemens Industrial Security: hxxps://www[.]siemens[.]com/industrialsecurity
- Operational Guidelines: hxxps://www[.]siemens[.]com/cert/operational-guidelines-industrial-security