Full Report
The RUGGEDCOM CROSSBOW server application before V5.5 contains multiple vulnerabilities that could allow an attacker to execute arbitrary database queries via SQL injection attacks, or upload of arbitrary files to the application’s file system. The majority of the reported vulnerabilities might have a high impact in the availability of the affected systems. Siemens has released a new version for RUGGEDCOM CROSSBOW and recommends to update to the latest version.
Analysis Summary
# Vulnerability: Multiple Critical Flaws in RUGGEDCOM CROSSBOW Leading to SQL Injection and Arbitrary File Upload
## CVE Details
*Note: The advisory reports multiple CVEs (CVE-2024-27939 through CVE-2024-27947). The summary highlights the most critical ones based on severity scores provided.*
- CVE ID: CVE-2024-27939 (Representative critical flaw)
- CVSS Score: 9.8 (CVSS v3.1) / 9.3 (CVSS v4.0)
- CWE: CVE-2024-27939: CWE-862: Missing Authorization
## Affected Systems
- Products: RUGGEDCOM CROSSBOW server application
- Versions: All versions prior to V5.5
- Configurations: N/A
## Vulnerability Description
The RUGGEDCOM CROSSBOW server application contains multiple vulnerabilities, primarily related to improper input sanitization and missing authorization checks.
Key vulnerabilities identified include:
1. **Arbitrary File Upload (CVE-2024-27939):** Any unauthenticated user can upload arbitrary files. This could lead to arbitrary code execution with system privileges.
2. **SQL Injection (Multiple CVEs, e.g., CVE-2024-27940, CVE-2024-27941):** Authenticated or unauthenticated users can send arbitrary SQL commands to the database server, potentially compromising the entire database. Improper handling of file paths also exists, allowing overwriting of specific system files.
3. **Denial of Service (CVE-2024-27942):** Unauthenticated clients can disconnect active users, leading to a functional denial of service.
## Exploitation
- **Status:** Proof-of-Concept (PoC) and Exploitation confirmed/implied by `E:P` (Proof-of-Concept) in CVSS environmental metrics for several high-severity flaws.
- **Complexity:** Low (Indicated by `AC:L` - Attack Complexity Low for high-severity flaws).
- **Attack Vector:** Network (Indicated by `AV:N` - Attack Vector Network).
## Impact
- **Confidentiality:** High (Database compromise via SQLi, potential information exposure via log forwarding)
- **Integrity:** High (Arbitrary file modification/upload, database manipulation)
- **Availability:** High (Denial of service potential due to user disconnection and ability to tamper with critical application files)
## Remediation
### Patches
- Update RUGGEDCOM CROSSBOW to **V5.5 or later**.
### Workarounds
- Apply product-specific remediations detailed in the vendor advisory.
- Implement general security recommendations: Protect network access to devices using appropriate mechanisms and configure the environment according to Siemens' operational guidelines for Industrial Security.
## Detection
- **Indicators of Compromise:** Look for unusual file uploads to the application file system, unexpected database queries or changes, or sudden active user disconnections not initiated by legitimate administrative actions.
- **Detection methods and tools:** Network intrusion detection systems (NIDS) monitoring for injected SQL commands or unexpected file transfer protocols targeting the CROSSBOW application interface.
## References
- Vendor Advisory: SSA-916916
- Siemens Security Recommendations Download: hXXps://www.siemens.com/cert/operational-guidelines-industrial-security
- Siemens Support Link for Patch: hXXps://support.industry.siemens.com/cs/ww/en/view/109954973/