CVE-2024-50644
📋 TL;DR
CVE-2024-50644 is an authentication bypass vulnerability in zhisheng17 blog version 3.0.1-SNAPSHOT that allows attackers to access APIs without valid authentication tokens. This affects all deployments running the vulnerable version, potentially exposing sensitive data and administrative functions to unauthorized users.
💻 Affected Systems
- zhisheng17 blog
⚠️ 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 system compromise: attackers could access, modify, or delete all blog content, user data, and potentially execute arbitrary code if other vulnerabilities exist in the API endpoints.
Likely Case
Unauthorized access to sensitive blog content, user information, and administrative functions leading to data theft, content manipulation, or privilege escalation.
If Mitigated
Limited impact with proper network segmentation and API gateway controls, but still exposes the vulnerable application to internal threats.
🎯 Exploit Status
The vulnerability allows complete bypass of authentication with no special tools or knowledge required. Attackers can simply access API endpoints without tokens.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to a version after 3.0.1-SNAPSHOT
Vendor Advisory: https://github.com/zhisheng17/blog/issues/64
Restart Required: Yes
Instructions:
1. Check current version. 2. Update to latest version from GitHub repository. 3. Restart the blog application. 4. Verify authentication is working correctly.
🔧 Temporary Workarounds
API Gateway Authentication
allImplement authentication at the API gateway or reverse proxy level to block unauthenticated requests before they reach the vulnerable application.
# Configure nginx/apache to require authentication
# Example nginx: auth_basic 'Restricted'; auth_basic_user_file /etc/nginx/.htpasswd;
Network Segmentation
linuxRestrict network access to the blog application to only trusted IP addresses or internal networks.
# Configure firewall rules
iptables -A INPUT -p tcp --dport [blog_port] -s [trusted_ip] -j ACCEPT
iptables -A INPUT -p tcp --dport [blog_port] -j DROP
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block unauthenticated API requests
- Disable or restrict access to the vulnerable API endpoints entirely
🔍 How to Verify
Check if Vulnerable:
Attempt to access any API endpoint without authentication token. If successful, the system is vulnerable.Check Version:
Check application configuration files or version endpoint if availableVerify Fix Applied:
Test API endpoints without authentication tokens - all should return 401 Unauthorized or similar error.📡 Detection & Monitoring
Log Indicators:
- Successful API requests without authentication tokens
- Unusual API access patterns from unauthenticated users
- 401 errors followed by successful 200 responses
Network Indicators:
- API requests without Authorization headers
- Unusual traffic to API endpoints from new IPs
SIEM Query:
source="blog_app" AND (response_code=200 AND NOT auth_token=*) OR (uri="/api/*" AND NOT auth_header=*)