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‘οΈ **Root Cause**: Improper input validation on the `/language/lang` parameter. π **Flaw**: Allows `../` directory traversal sequences to escape the intended directory and access arbitrary files on the server.
π΅οΈ **Attacker Action**: Remote, unauthenticated access. π **Impact**: Can read `/etc/shadow` via the `s_Language` cookie. π **Result**: Exposure of password hashes, enabling offline cracking and privilege escalation.
Q5Is exploitation threshold high? (Auth/Config)
π **Threshold**: **LOW**. π« **Auth**: No authentication required. π **Access**: Remote exploitation via HTTP GET requests. β‘ **Ease**: Simple cookie manipulation.
Q6Is there a public Exp? (PoC/Wild Exploitation)
π’ **Public Exp**: **YES**. π **PoC**: Available on GitHub (crypt0g30rgy/cve-2021-45043). π οΈ **Tools**: Works via Burp Suite or simple `curl` one-liners. π **Mass Scanning**: Supported by Nuclei templates.
Q7How to self-check? (Features/Scanning)
π **Check Method**: Send a GET request to `/language/lang`. πͺ **Payload**: Set Cookie `s_Language=../../../../../../../../../../../../../../etc/shadow`.β¦
π **Patch Status**: The provided data does not explicitly mention an official vendor patch release date or version. β οΈ **Note**: Published Dec 15, 2021. Organizations should check vendor updates immediately.
Q9What if no patch? (Workaround)
π‘οΈ **Workaround**: Block access to `/language/lang` endpoint via WAF or firewall. π« **Mitigation**: Restrict cookie parameter injection.β¦
π₯ **Urgency**: **HIGH**. π¨ **Reason**: Unauthenticated, easy to exploit, and leads to critical data exposure (password hashes). π **Action**: Patch or mitigate immediately to prevent credential theft.