CVE-2021-34805 — AI Deep Analysis Summary

🚨 **Essence**: Land Software Faust iServer suffers from a **Path Traversal** vulnerability leading to **Local File Inclusion (LFI)**.…

🛡️ **Root Cause**: The software fails to restrict **Local File Inclusion**.…

🏢 **Vendor**: Land Software (Germany). <br>📦 **Product**: Faust iServer. <br>📅 **Affected Versions**: **9.0.017.017.1** through **9.0.018.018.4**. <br>✅ **Safe**: Version **9.0.019.019.7** and above are not susceptible.

🕵️ **Attacker Actions**: <br>1. **Read Sensitive Data**: Access system files, configs, or database credentials via LFI. <br>2. **Information Disclosure**: Map the server's internal directory structure.…

🔓 **Exploitation Threshold**: **LOW**. <br>🌐 **Auth**: Likely requires no authentication (public URL exposure). <br>⚙️ **Config**: Exploits standard URL parsing behavior.…

💻 **Public Exploit**: **YES**. <br>📂 **PoC Available**: Proof of Concept exists in **Nuclei Templates** (projectdiscovery/nuclei-templates).…

🔍 **Self-Check Method**: <br>1. Use **Nuclei** with the CVE-2021-34805 template. <br>2. Manually test URLs by injecting `%2e%2e%5c` (../) into request paths. <br>3.…

🩹 **Official Fix**: **YES**. <br>📦 **Patch**: Upgrade to version **9.0.019.019.7** or later. <br>🔗 **Reference**: Land Software official site (land-software.de) provides the updated iServer.

🚧 **No Patch Workaround**: <br>1. **WAF Rules**: Block requests containing `%2e%2e` or `..` in URL parameters. <br>2. **Access Control**: Restrict access to Faust iServer ports to trusted IPs only. <br>3.…

⚡ **Urgency**: **HIGH**. <br>📉 **Priority**: **P1/P2**. <br>💡 **Reason**: LFI is a critical vulnerability class with easy exploitation and high impact (data breach). Immediate patching or mitigation is recommended.