CVE-2025-3363
Remediation/Mitigation Strategy: CVE-2025-3363 - iSherlock OS Command Injection
Vulnerability Description:
The iSherlock web service from HGiga is vulnerable to OS Command Injection. This vulnerability allows unauthenticated remote attackers to inject arbitrary operating system commands and execute them on the server hosting the iSherlock application.
Severity:
- CVSS Score: 9.8 (Critical)
- This indicates a high likelihood of successful exploitation and a significant impact on confidentiality, integrity, and availability.
Known Exploit:
- Unauthenticated remote attackers can inject OS commands. The specific attack vector (e.g., vulnerable parameter, HTTP method) is not specified in the provided information but is likely discoverable through further analysis of the iSherlock web service.
Remediation:
Input Validation: Implement robust input validation and sanitization on all user-supplied data before it is used in any system calls or executed by the operating system. Specifically, identify all parameters exposed by the web service and ensure that any potentially dangerous characters or sequences are either rejected or properly escaped. Consider using a whitelist approach to only allow expected characters.
Least Privilege: Run the iSherlock web service with the minimum necessary privileges. Avoid running the service as root or any other privileged account. This limits the impact of a successful command injection by restricting the attacker’s ability to perform system-level operations.
Secure Coding Practices: Review the iSherlock codebase for any instances where user-provided data is used to construct shell commands or interact with the operating system. Replace insecure functions (e.g.,
system(),exec(),popen()) with safer alternatives that prevent command injection. Consider using parameterized queries or prepared statements when interacting with databases or other external systems.Update iSherlock: Check the vendor’s (HGiga) website for available patches or updates that address this vulnerability. Applying the latest security updates is crucial to protect your system from exploitation. If a patch is unavailable, consider contacting HGiga directly to inquire about a fix.
Web Application Firewall (WAF): Deploy a web application firewall (WAF) to detect and block malicious requests that attempt to exploit the OS command injection vulnerability. Configure the WAF with rules that specifically target command injection attacks.
Mitigation:
Network Segmentation: Isolate the iSherlock web service from other critical systems on the network. This limits the potential damage if the system is compromised.
Monitoring and Logging: Implement robust monitoring and logging to detect any suspicious activity related to the iSherlock web service. Monitor for unusual commands being executed, unauthorized access attempts, or unexpected network traffic.
Intrusion Detection/Prevention System (IDS/IPS): Deploy an Intrusion Detection System (IDS) or Intrusion Prevention System (IPS) to monitor network traffic for malicious patterns and automatically block or alert on suspicious activity.
Disable Unnecessary Features: If possible, disable any unnecessary features or functionalities of the iSherlock web service that are not required for its intended purpose. This reduces the attack surface and limits the potential for exploitation.
Regular Security Audits: Conduct regular security audits and penetration testing to identify and address any vulnerabilities in the iSherlock web service and other systems on the network.
Assigner
- TWCERT/CC [email protected]
Date
- Published Date: 2025-04-08 02:15:21
- Updated Date: 2025-04-08 18:13:53