CVE-2022-24132
📋 TL;DR
CVE-2022-24132 is a denial of service vulnerability in phpshe V1.8's registry verification code that allows attackers to crash the service. This affects all users running phpshe V1.8 with the vulnerable registry component enabled. The vulnerability can be exploited remotely without authentication.
💻 Affected Systems
- phpshe
📦 What is this software?
Phpshe by Phpshe
⚠️ Risk & Real-World Impact
Worst Case
Complete service unavailability requiring manual restart, potentially disrupting business operations and user access.
Likely Case
Service crashes and becomes unavailable until manually restarted, causing temporary disruption.
If Mitigated
Service remains available with proper rate limiting and input validation in place.
🎯 Exploit Status
The vulnerability is in publicly available code and DoS attacks are relatively simple to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V1.9 or later
Vendor Advisory: https://github.com/zpxlz/phpshe/
Restart Required: Yes
Instructions:
1. Backup current installation. 2. Download latest version from GitHub. 3. Replace vulnerable files with patched versions. 4. Restart web service. 5. Verify functionality.
🔧 Temporary Workarounds
Disable registry verification
allTemporarily disable the vulnerable registry verification component
Modify registry configuration to bypass verification code
Implement rate limiting
allAdd rate limiting to registry endpoint to prevent DoS attacks
Configure web server or application rate limiting rules
🧯 If You Can't Patch
- Implement WAF rules to block suspicious registry verification requests
- Isolate the phpshe instance behind additional network security controls
🔍 How to Verify
Check if Vulnerable:
Check if running phpshe V1.8 by examining version files or configurationCheck Version:
Check version.php or config files in phpshe installation directoryVerify Fix Applied:
Verify version is V1.9 or later and test registry functionality📡 Detection & Monitoring
Log Indicators:
- Multiple rapid requests to registry verification endpoint
- Service crash/restart logs
- Error logs showing verification code failures
Network Indicators:
- High volume of requests to /registry/verify endpoint
- Unusual traffic patterns to registry functionality
SIEM Query:
source="web_logs" AND (uri="/registry/verify" OR uri LIKE "%/registry/verify%") AND count > threshold