CVE-2025-22234
📋 TL;DR
This vulnerability reintroduces timing attack risks in Spring Security's DaoAuthenticationProvider, allowing attackers to infer valid usernames through response time analysis. It affects Spring Security applications using DaoAuthenticationProvider with certain configurations. The vulnerability stems from a previous fix that inadvertently weakened timing attack mitigations.
💻 Affected Systems
- Spring Security
⚠️ 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 enumerate valid usernames, enabling targeted credential stuffing attacks and potentially facilitating account takeover.
Likely Case
Attackers can infer valid usernames through timing analysis, increasing the success rate of subsequent brute-force or credential stuffing attacks.
If Mitigated
With proper network controls and rate limiting, impact is limited to potential username enumeration without direct authentication bypass.
🎯 Exploit Status
Requires precise timing measurements and multiple authentication attempts to detect response time differences
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Spring Security advisory for specific patched versions
Vendor Advisory: https://spring.io/security/cve-2025-22234/
Restart Required: Yes
Instructions:
1. Review Spring Security advisory for affected versions
2. Update Spring Security to patched version
3. Restart application
4. Verify timing attack mitigations are functioning correctly
🔧 Temporary Workarounds
Implement custom timing attack mitigation
allAdd constant-time authentication response logic to eliminate timing differences
Enable rate limiting
allImplement strict rate limiting on authentication endpoints to reduce timing attack feasibility
🧯 If You Can't Patch
- Implement network-level rate limiting and monitoring for authentication attempts
- Deploy WAF with timing attack detection capabilities
🔍 How to Verify
Check if Vulnerable:
Check Spring Security version against affected versions in advisory; review DaoAuthenticationProvider configurationCheck Version:
Check application dependencies for Spring Security version (e.g., Maven pom.xml, Gradle build.gradle)Verify Fix Applied:
Verify Spring Security is updated to patched version; test authentication endpoints for consistent response times📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts from single source
- Unusual authentication timing patterns
Network Indicators:
- High volume of authentication requests with varying usernames
- Consistent timing patterns in authentication traffic
SIEM Query:
source_ip authentication_failure count > threshold within time_window