CVE-2024-8005
📋 TL;DR
CVE-2024-8005 is a critical authentication bypass vulnerability in demozx gf_cms versions 1.0 and 1.0.1 that allows attackers to gain unauthorized access using hard-coded JWT credentials. This affects all systems running the vulnerable versions of gf_cms, particularly web applications using the JWT authentication component. Attackers can remotely exploit this to bypass authentication and potentially gain administrative privileges.
💻 Affected Systems
- demozx gf_cms
📦 What is this software?
Gf Cms by Demozx
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to gain administrative access, steal sensitive data, modify content, and potentially execute arbitrary code on the server.
Likely Case
Unauthorized access to administrative functions, data exfiltration, and website defacement or content manipulation.
If Mitigated
Limited impact if proper network segmentation, monitoring, and additional authentication layers are in place, though authentication bypass remains possible.
🎯 Exploit Status
The exploit uses hard-coded credentials that are publicly disclosed, making exploitation trivial for attackers with access to the disclosed information.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.2
Vendor Advisory: https://github.com/demozx/gf_cms/commit/be702ada7cb6fdabc02689d90b38139c827458a5
Restart Required: Yes
Instructions:
1. Backup your current installation and database. 2. Download version 1.0.2 from the official repository. 3. Replace all files with the new version. 4. Restart the web application service. 5. Verify the patch is applied by checking the version.
🔧 Temporary Workarounds
Disable JWT Authentication
allTemporarily disable JWT authentication component until patching can be completed
Modify configuration to use alternative authentication method or disable affected endpoints
Network Access Control
linuxRestrict access to the application using firewall rules or network segmentation
iptables -A INPUT -p tcp --dport [APP_PORT] -s [TRUSTED_IPS] -j ACCEPT
iptables -A INPUT -p tcp --dport [APP_PORT] -j DROP
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block requests using the hard-coded JWT credentials
- Enable detailed logging and monitoring for authentication attempts and implement alerting for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check the version of gf_cms installed; if it's 1.0 or 1.0.1, the system is vulnerable. Review the auth.go file for hard-coded credentials in the init function.Check Version:
Check the application's version file or configuration, or run: grep -r "version" /path/to/gf_cms/ | grep -i "1.0\|1.0.1"Verify Fix Applied:
Verify the installed version is 1.0.2 or later. Check that commit be702ada7cb6fdabc02689d90b38139c827458a5 is present in the codebase.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful authentication with unusual patterns
- Multiple authentication requests from single IPs in short timeframes
- Authentication logs showing use of hard-coded JWT tokens
Network Indicators:
- Unusual traffic patterns to authentication endpoints
- Requests containing the hard-coded JWT credentials in headers
SIEM Query:
source="*auth.log*" AND ("authentication success" OR "JWT validation") AND NOT user="*" | stats count by src_ip🔗 References
- https://github.com/demozx/gf_cms/commit/be702ada7cb6fdabc02689d90b38139c827458a5
- https://github.com/demozx/gf_cms/commit/de51cc57a96ccca905c837ef925c2cc3a5241383
- https://github.com/demozx/gf_cms/issues/5
- https://github.com/demozx/gf_cms/issues/5#issuecomment-2296590417
- https://vuldb.com/?ctiid.275199
- https://vuldb.com/?id.275199
- https://vuldb.com/?submit.393981
