This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis β
Q1What is this vulnerability? (Essence + Consequences)
π¨ **Essence**: Command Injection in elFinder PHP connector. π₯ **Consequences**: Attackers can execute arbitrary system commands on the server. This leads to full server compromise, data theft, or lateral movement.
Q2Root Cause? (CWE/Flaw)
π‘οΈ **Root Cause**: Improper sanitization of user-supplied input. Specifically, the **filename** of a JPEG image is passed directly to the `exiftran` utility without validation. π **CWE**: CWE-78 (OS Command Injection).
Q3Who is affected? (Versions/Components)
π¦ **Affected**: elFinder versions **before 2.1.48**. π₯οΈ **Component**: The PHP connector module used for file management and image operations.
Q4What can hackers do? (Privileges/Data)
π **Capabilities**: Unauthenticated Remote Code Execution (RCE). π **Privileges**: The code executes with the **web server user's privileges**.β¦
π **Threshold**: **LOW**. β οΈ **Auth**: No authentication required. π― **Config**: Exploitable via standard image upload/processing features. If the file manager is exposed, it's game over.
Q6Is there a public Exp? (PoC/Wild Exploitation)
π₯ **Public Exp**: **YES**. π **Sources**: Exploit-DB (IDs 46481, 46539) and GitHub PoCs are available. π **Wild Exploitation**: High risk due to ease of use and lack of auth requirement.
Q7How to self-check? (Features/Scanning)
π **Self-Check**: 1. Scan for elFinder PHP connectors. 2. Check version number (must be < 2.1.48). 3. Look for `exiftran` usage in image processing logs. π‘ **Tools**: Use Nuclei templates or Exploit-DB scanners.
Q8Is it fixed officially? (Patch/Mitigation)
β **Fixed**: **YES**. π **Patch**: Version **2.1.48** resolves the issue. π **Action**: Upgrade elFinder immediately to the latest stable version.
Q9What if no patch? (Workaround)
π§ **No Patch Workaround**: 1. **Disable** the PHP connector if not needed. 2. **Restrict** file upload types (block JPEGs if possible). 3.β¦
π¨ **Urgency**: **CRITICAL**. π΄ **Priority**: **P1**. β±οΈ **Reason**: Unauthenticated RCE is a top-tier threat. Patch immediately to prevent total server takeover.