CVE-2023-28103
📋 TL;DR
This CVE describes a prototype pollution vulnerability in matrix-react-sdk where specially crafted data from remote servers can modify Object.prototype, disrupting SDK functionality. This can cause denial of service and potentially affect program logic. All users of matrix-react-sdk versions before 3.69.0 are affected.
💻 Affected Systems
- matrix-react-sdk
📦 What is this software?
Matrix React Sdk by Matrix React Sdk Project
⚠️ Risk & Real-World Impact
Worst Case
Remote servers could manipulate Object.prototype to cause application crashes, data corruption, or unexpected behavior in the React application, potentially leading to complete service disruption.
Likely Case
Denial of service through application instability or crashes when processing malicious data from untrusted Matrix servers.
If Mitigated
With proper input validation and updated SDK, the risk is eliminated as the vulnerability is patched at the source.
🎯 Exploit Status
Exploitation requires sending specially crafted data from a Matrix server, which could be achieved by compromising or controlling a server the application connects to.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.69.0
Vendor Advisory: https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-6g43-88cp-w5gv
Restart Required: Yes
Instructions:
1. Update package.json to specify matrix-react-sdk version 3.69.0 or higher. 2. Run npm update matrix-react-sdk or yarn upgrade matrix-react-sdk. 3. Restart your application to load the updated SDK.
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) to limit script execution.
- Monitor and restrict connections to trusted Matrix servers only.
🔍 How to Verify
Check if Vulnerable:
Check package.json or run npm list matrix-react-sdk to see if version is below 3.69.0.Check Version:
npm list matrix-react-sdkVerify Fix Applied:
Confirm matrix-react-sdk version is 3.69.0 or higher using npm list matrix-react-sdk or checking package.json.📡 Detection & Monitoring
Log Indicators:
- Application crashes or unexpected errors when processing Matrix server data.
- Unusual prototype modification warnings in JavaScript console.
Network Indicators:
- Unusual data patterns from Matrix servers triggering application instability.
SIEM Query:
Application logs containing 'matrix-react-sdk' errors or crashes during data processing.🔗 References
- https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-6g43-88cp-w5gv
- https://matrix.org/blog/2023/03/28/security-releases-matrix-js-sdk-24-0-0-and-matrix-react-sdk-3-69-0
- https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-6g43-88cp-w5gv
- https://matrix.org/blog/2023/03/28/security-releases-matrix-js-sdk-24-0-0-and-matrix-react-sdk-3-69-0
