CVE-2021-29501
📋 TL;DR
CVE-2021-29501 is an injection vulnerability in the Ticketer cog for Red Discord Bot that allows Discord users to expose sensitive information through improper input handling. This affects all Discord servers running the vulnerable Ticketer plugin. Attackers can potentially access sensitive data that should be restricted.
💻 Affected Systems
- Ticketer cog for Red Discord Bot
📦 What is this software?
Dav Cogs by Dav Cogs Project
⚠️ Risk & Real-World Impact
Worst Case
Complete exposure of sensitive ticket information including private messages, user data, and potentially other bot configuration details to unauthorized Discord users.
Likely Case
Unauthorized access to ticket contents and metadata that should be restricted to specific roles or users.
If Mitigated
No data exposure with proper patching or workaround implementation.
🎯 Exploit Status
Exploitation requires Discord user access but no special privileges. The advisory suggests the vulnerability is actively exploitable.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.1
Vendor Advisory: https://github.com/Dav-Git/Dav-Cogs/security/advisories/GHSA-r2cf-49r7-pfj7
Restart Required: Yes
Instructions:
1. Update the Ticketer cog using Red's package manager: [p]cog update ticketer
2. Restart the bot or reload the cog: [p]reload ticketer
3. Verify the version is 1.0.1 or higher
🔧 Temporary Workarounds
Unload Ticketer Cog
allDisable the vulnerable Ticketer cog completely to prevent exploitation
[p]unload ticketer
🧯 If You Can't Patch
- Implement strict Discord role permissions to limit who can interact with the Ticketer cog
- Monitor Discord audit logs for unusual ticket access patterns or commands
🔍 How to Verify
Check if Vulnerable:
Check Ticketer cog version using: [p]cog info ticketerCheck Version:
[p]cog info ticketerVerify Fix Applied:
Confirm version is 1.0.1 or higher after update📡 Detection & Monitoring
Log Indicators:
- Unusual ticket access patterns
- Multiple failed ticket commands from same user
- Unexpected data exposure in ticket responses
Network Indicators:
- Increased Discord API calls to ticket-related endpoints
SIEM Query:
Not applicable for Discord bot plugins🔗 References
- https://github.com/Dav-Git/Dav-Cogs/commit/3d54ef9b52ce03f139b7d6c1cc38c375e65593fd
- https://github.com/Dav-Git/Dav-Cogs/security/advisories/GHSA-r2cf-49r7-pfj7
- https://github.com/Dav-Git/Dav-Cogs/commit/3d54ef9b52ce03f139b7d6c1cc38c375e65593fd
- https://github.com/Dav-Git/Dav-Cogs/security/advisories/GHSA-r2cf-49r7-pfj7
