CVE-2024-52813
📋 TL;DR
This vulnerability in matrix-rust-sdk's crypto crate fails to notify applications when a user's verified cryptographic identity changes to unverified. This could allow malicious actors to impersonate previously trusted users without detection. Applications using matrix-sdk-crypto versions before 0.8.0 are affected.
💻 Affected Systems
- matrix-rust-sdk
- matrix-sdk-crypto
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could impersonate verified users in encrypted communications, potentially leading to data leakage or social engineering attacks.
Likely Case
Users might unknowingly communicate with impersonated accounts, compromising the integrity of encrypted conversations.
If Mitigated
With proper monitoring and updated clients, identity changes would be detected and users could be warned.
🎯 Exploit Status
Exploitation requires ability to manipulate cryptographic identities and target specific users.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: matrix-sdk-crypto 0.8.0
Vendor Advisory: https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-r5vf-wf4h-82gg
Restart Required: Yes
Instructions:
1. Update matrix-sdk-crypto dependency to version 0.8.0 or higher in Cargo.toml. 2. Run 'cargo update'. 3. Rebuild and redeploy the application.
🔧 Temporary Workarounds
Manual identity verification monitoring
allImplement application-level checks to monitor identity verification status changes
🧯 If You Can't Patch
- Implement additional application-layer verification checks for all encrypted communications
- Educate users to manually verify identities before sensitive conversations
🔍 How to Verify
Check if Vulnerable:
Check Cargo.toml or Cargo.lock for matrix-sdk-crypto version <0.8.0Check Version:
grep -E 'matrix-sdk-crypto.*\d+\.\d+\.\d+' Cargo.lockVerify Fix Applied:
Confirm matrix-sdk-crypto version is 0.8.0 or higher in Cargo.lock📡 Detection & Monitoring
Log Indicators:
- Unexpected identity verification status changes
- Multiple verification requests from same user
Network Indicators:
- Unusual patterns in Matrix identity key exchanges
SIEM Query:
Search for logs containing 'verification violation' or 'identity changed' in Matrix client applications