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Q1What is this vulnerability? (Essence + Consequences)
🚨 **Essence**: ProjectSend r1605 allows **malicious file uploads** via extension manipulation. 💥 **Consequences**: Full **Remote Code Execution (RCE)**.…
🛡️ **Root Cause**: **CWE-434** (Unrestricted Upload of File with Dangerous Type). The application fails to validate file extensions properly, allowing attackers to bypass security controls by tricking the system.
Q3Who is affected? (Versions/Components)
👥 **Affected**: **ProjectSend** (cFTP) version **r1605**. Specifically, the PHP/MySQL self-hosted application components handling file uploads are vulnerable.
Q4What can hackers do? (Privileges/Data)
💀 **Attacker Capabilities**: With **CVSS 9.8 (Critical)**, hackers gain **High** Confidentiality, Integrity, and Availability impact.…
⚡ **Exploitation Threshold**: **LOW**. CVSS vector `AV:N/AC:L/PR:N/UI:N` means: **Network** accessible, **Low** complexity, **No** privileges required, **No** user interaction needed. It is an easy target.
Q6Is there a public Exp? (PoC/Wild Exploitation)
🔍 **Public Exploit**: **YES**. ExploitDB ID **51238** is available. This indicates **wild exploitation** is possible and likely occurring in the wild.
Q7How to self-check? (Features/Scanning)
🔎 **Self-Check**: Scan for **ProjectSend r1605** instances. Check upload endpoints for **extension validation flaws**. Look for unauthorized PHP/Shell files in upload directories.
Q8Is it fixed officially? (Patch/Mitigation)
🛠️ **Official Fix**: Check the **Official Product Homepage** (projectsend.org) for updates. The advisory from VulnCheck confirms the vulnerability exists; patching to a secure version is the primary mitigation.
Q9What if no patch? (Workaround)
🚧 **No Patch Workaround**: Implement strict **WAF rules** to block malicious file extensions. Restrict upload directories to prevent execution. Manually audit uploaded files for suspicious extensions.
Q10Is it urgent? (Priority Suggestion)
🔥 **Urgency**: **CRITICAL**. With a **CVSS 9.8** score and **public exploits**, immediate action is required. Prioritize patching or applying mitigations to prevent server compromise.