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**: A Command Injection flaw in `rcube_image.php`. π **Consequences**: Attackers can execute arbitrary OS commands via shell metacharacters. π₯ **Impact**: Full system compromise if triggered.
Q2Root Cause? (CWE/Flaw)
π‘οΈ **Root Cause**: Lack of input sanitization in the `_im_convert_path` parameter. π **Flaw**: Unsafe handling of image conversion paths allows shell injection. π **CWE**: Implicitly Command Injection (CWE-78).
Q3Who is affected? (Versions/Components)
π¦ **Affected**: Roundcube Webmail versions **< 1.4.4**, **< 1.3.11**, and **< 1.2.10**. π **Component**: Specifically the `rcube_image.php` file. β οΈ **Note**: Bypass exists for versions < 1.4.5/1.3.12.
Q4What can hackers do? (Privileges/Data)
π» **Privileges**: Arbitrary code execution on the server. π **Data**: Potential access to all server data/files. π **Action**: Can run any system command via image processing triggers.
Q5Is exploitation threshold high? (Auth/Config)
π **Threshold**: **High** for initial access. π **Requirement**: Attacker needs access to the **Roundcube Installer** to inject the malicious `_im_convert_path`.β¦
π **Public Exp**: **Yes**. π **PoC**: Available on GitHub (e.g., `mbadanoiu/CVE-2020-12641`). π **Automation**: Nuclei templates exist for scanning. β οΈ **Bypass**: MAL-004 shows how to bypass initial fixes.
Q7How to self-check? (Features/Scanning)
π **Check**: Scan for Roundcube versions < 1.4.4. π‘ **Tool**: Use Nuclei templates (`CVE-2020-12641.yaml`). π§ͺ **Test**: Verify if `_im_convert_path` is unsanitized in installer config.
π§ **Workaround**: Restrict access to the Roundcube Installer. π **Mitigation**: Disable image conversion features if possible. π **Config**: Ensure `_im_convert_path` is strictly validated/sanitized.
Q10Is it urgent? (Priority Suggestion)
β‘ **Urgency**: **High**. π **Risk**: Remote Code Execution (RCE). π¨ **Action**: Patch immediately if using vulnerable versions. π’ **Note**: Public exploits and bypasses exist.