CVE-2021-29465
📋 TL;DR
CVE-2021-29465 is a critical vulnerability in Discord-Recon bot versions 0.0.3 and earlier that allows remote attackers to overwrite arbitrary files on the system with command results, potentially leading to remote code execution. This affects anyone running vulnerable versions of the Discord-Recon bot on their Discord servers. Attackers can exploit this by sending specially crafted commands through Discord.
💻 Affected Systems
- Discord-Recon
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through remote code execution, allowing attackers to install malware, steal data, or pivot to other systems.
Likely Case
File system corruption or unauthorized data modification leading to service disruption and potential credential theft.
If Mitigated
Limited impact with proper network segmentation and least privilege, potentially only affecting the bot's isolated environment.
🎯 Exploit Status
Exploitation requires Discord access to send commands to the bot, but the vulnerability itself is simple to exploit once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.0.4
Vendor Advisory: https://github.com/DEMON1A/Discord-Recon/security/advisories/GHSA-6pp2-rpj3-jcjx
Restart Required: Yes
Instructions:
1. Stop the Discord-Recon bot. 2. Update to version 0.0.4 or later using 'pip install --upgrade discord-recon'. 3. Restart the bot.
🔧 Temporary Workarounds
Edit settings.py workaround
allModify the RCE variable in settings.py to add angle brackets, which prevents the file overwrite vulnerability.
Edit settings.py and modify the RCE variable to include '<' and '>' characters
🧯 If You Can't Patch
- Immediately disable or remove the Discord-Recon bot from all Discord servers
- Implement network segmentation to isolate the bot's host system from critical infrastructure
🔍 How to Verify
Check if Vulnerable:
Check the installed version of Discord-Recon using 'pip show discord-recon' and verify if it's 0.0.3 or earlier.Check Version:
pip show discord-recon | grep VersionVerify Fix Applied:
Confirm version is 0.0.4 or later using 'pip show discord-recon' and check that the settings.py file has been properly modified if using the workaround.📡 Detection & Monitoring
Log Indicators:
- Unusual file write operations by the Discord-Recon process
- Multiple failed command attempts in Discord bot logs
Network Indicators:
- Suspicious Discord API calls with file manipulation commands
- Unexpected outbound connections from the bot host
SIEM Query:
process_name:"python" AND command_line:"discord-recon" AND (file_write:* OR file_modify:*)