CVE-2022-25852
📋 TL;DR
CVE-2022-25852 is a Denial of Service vulnerability in pg-native and libpq packages where non-array arguments cause casting failures that crash the application. This affects all versions of both packages, impacting Node.js applications using PostgreSQL database connections. The vulnerability is triggered when specific function calls receive incorrect argument types.
💻 Affected Systems
- pg-native
- libpq
📦 What is this software?
Libpq by Libpq Project
Pg Native by Pg Native Project
⚠️ 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
Complete service outage where the PostgreSQL client process crashes, disrupting database connectivity and application functionality.
Likely Case
Application instability and intermittent crashes when malformed data or incorrect API calls trigger the vulnerability.
If Mitigated
Minimal impact with proper input validation and error handling preventing the vulnerable code paths from being reached.
🎯 Exploit Status
Exploitation requires triggering specific function calls with incorrect argument types, which may require application-specific knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to latest versions of pg-native and libpq (check npm for current patched versions)
Vendor Advisory: https://snyk.io/vuln/SNYK-JS-LIBPQ-2392366
Restart Required: Yes
Instructions:
1. Update package.json to use latest versions of pg-native and libpq. 2. Run 'npm update pg-native libpq'. 3. Restart your Node.js application. 4. Test database connectivity.
🔧 Temporary Workarounds
Input validation wrapper
allAdd validation to ensure second arguments to affected functions are arrays before passing to pg-native/libpq
// JavaScript example: function safeCall(arg1, arg2) { if (!Array.isArray(arg2)) throw new Error('Argument must be array'); return originalFunction(arg1, arg2); }
🧯 If You Can't Patch
- Implement strict input validation for all database function calls
- Add error handling and process monitoring to restart crashed services automatically
🔍 How to Verify
Check if Vulnerable:
Check package.json or run 'npm list pg-native libpq' to see installed versions. All current installations are vulnerable.Check Version:
npm list pg-native libpqVerify Fix Applied:
After update, verify with 'npm list pg-native libpq' showing latest versions, then test database operations.📡 Detection & Monitoring
Log Indicators:
- Application crashes with casting errors
- PostgreSQL connection failures
- TypeError exceptions in logs
Network Indicators:
- Sudden drop in database connections
- Increased connection timeouts
SIEM Query:
source="application.logs" AND ("TypeError" OR "casting" OR "pg-native" OR "libpq") AND ("crash" OR "error")