CVE-2024-42849
📋 TL;DR
A vulnerability in Silverpeas versions 6.4.2 and earlier allows remote attackers to cause denial of service through the password change function. This affects all Silverpeas deployments running vulnerable versions, potentially disrupting service availability.
💻 Affected Systems
- Silverpeas
📦 What is this software?
Silverpeas by Silverpeas
⚠️ Risk & Real-World Impact
Worst Case
Complete service unavailability for all users, requiring system restart or recovery procedures.
Likely Case
Temporary service disruption affecting user authentication and password management functions.
If Mitigated
Minimal impact with proper rate limiting and monitoring in place.
🎯 Exploit Status
Public exploit code available on GitHub, simple to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.4.3 or later
Vendor Advisory: http://silverpeas.com
Restart Required: Yes
Instructions:
1. Backup current installation. 2. Download Silverpeas 6.4.3 or later. 3. Follow upgrade instructions from vendor documentation. 4. Restart Silverpeas service.
🔧 Temporary Workarounds
Disable password change functionality
allTemporarily disable the password change feature to prevent exploitation.
Modify Silverpeas configuration to remove password change endpoints
Implement rate limiting
allAdd rate limiting to password change requests to prevent DoS attacks.
Configure web server or application firewall to limit requests to /password endpoints
🧯 If You Can't Patch
- Implement network-level rate limiting on password change endpoints
- Monitor for abnormal password change request patterns and block suspicious IPs
🔍 How to Verify
Check if Vulnerable:
Check Silverpeas version via admin interface or configuration files. If version is 6.4.2 or earlier, system is vulnerable.Check Version:
Check WEB-INF/version.properties or admin dashboard for version informationVerify Fix Applied:
Verify Silverpeas version is 6.4.3 or later and test password change functionality works normally.📡 Detection & Monitoring
Log Indicators:
- High volume of password change requests
- Failed password change attempts from same IP
- Unusual patterns in authentication logs
Network Indicators:
- Excessive requests to password change endpoints
- Spike in traffic to authentication services
SIEM Query:
source="silverpeas" AND (url="*/password*" OR event="password_change") | stats count by src_ip | where count > 10