CVE-2021-27132 — AI Deep Analysis Summary

🚨 **Essence**: CRLF Injection in Sercomm AG Combo VD625 AGSOT. 💥 **Consequences**: Attackers can inject Carriage Return/Line Feed characters via the **Content-Disposition** header.…

🛡️ **Root Cause**: Improper validation of user-supplied input in the **Content-Disposition** header.…

📦 **Affected Product**: Sercomm AG Combo VD625 Smart Modem. 📜 **Version**: Specifically **AGSOT_2.1.0**. 🌏 **Vendor**: Sercomm (Chinese telecom broadband solutions provider).

🕵️ **Attacker Actions**: Manipulate HTTP responses. 📊 **Impact**: Potential **Cache Poisoning**, Session Hijacking, or XSS via injected headers.…

🔓 **Threshold**: Likely **Low/Medium**. 📝 **Config**: Exploitation depends on the **Content-Disposition** header being user-controllable or injectable.…

🔍 **Public Exploit**: Yes. 📂 **PoC Available**: Nuclei template exists at `projectdiscovery/nuclei-templates`. 🌐 **Reference**: Detailed analysis available at `cybertuz.com`. This indicates active community awareness.

🔎 **Self-Check**: Use automated scanners like **Nuclei** with the specific CVE template. 📡 **Feature**: Look for CRLF characters (`%0d%0a`) in the **Content-Disposition** header response.…

🩹 **Official Fix**: The data implies a vulnerability exists in v2.1.0. 📅 **Published**: Feb 27, 2021.…

🚧 **Workaround**: Implement **Input Validation** on the server side to reject CR/LF characters. 🛡️ **Mitigation**: Use a **WAF** (Web Application Firewall) to block CRLF injection patterns in headers.…

⚡ **Priority**: **High**. 🚨 **Urgency**: CRLF injection is a classic, high-impact vulnerability class. 📉 **Risk**: Even if not immediately exploitable for RCE, it enables downstream attacks like XSS.…