CVE-2020-8813 — AI Deep Analysis Summary

🚨 **Essence**: Remote Code Execution (RCE) in Cacti. 📉 **Consequences**: Attackers can execute arbitrary OS commands via shell metacharacters in cookies. 💥 **Impact**: Full system compromise.

🛡️ **Root Cause**: Input validation failure in `graph_realtime.php`. 🐛 **Flaw**: Unsafe handling of cookie data containing shell metacharacters.…

🎯 **Affected**: Cacti version **1.2.8**. 📦 **Component**: `graph_realtime.php` file. ⚠️ **Scope**: Specifically targets the Real-Time Graphing feature.

💻 **Capabilities**: Execute arbitrary OS commands. 🔓 **Privileges**: Depends on the victim user's rights (e.g., Guest user with Real-Time Graph privilege).…

⚖️ **Threshold**: **Low** for specific configs. 🔑 **Auth**: Can be **Unauthenticated** if "Guest Realtime Graphs" privilege is enabled. ✅ **Post-Auth**: Also exploitable with valid credentials.…

🔥 **Public Exploits**: Yes, multiple PoCs available. 📂 **GitHub**: Repos like `mhaskar/CVE-2020-8813`, `0xm4ud/Cacti-CVE-2020-8813`, `hexcowboy/CVE-2020-8813`. 🛠️ **Tools**: Python scripts and Nuclei templates exist.…

🔍 **Check**: Scan for Cacti v1.2.8. 📡 **Feature**: Check if `graph_realtime.php` is accessible. 👤 **Privilege**: Verify if "Guest Realtime Graphs" is enabled.…

🛡️ **Fix**: Update Cacti to a patched version (post-1.2.8). 📢 **Vendor Advisory**: openSUSE and Fedora issued updates (e.g., openSUSE-SU-2020:0558). 🔄 **Action**: Apply vendor-provided patches immediately.

🚧 **Workaround**: Disable "Guest Realtime Graphs" privilege. 🚫 **Access Control**: Restrict access to `graph_realtime.php`. 🔒 **Network**: Block external access to Cacti interface if possible.…

🔴 **Priority**: **CRITICAL**. 🚨 **Urgency**: High. 💣 **Risk**: Unauthenticated RCE is severe. 🏃 **Action**: Patch immediately or disable guest realtime access.…