CVE-2025-5510
📋 TL;DR
This critical SSRF vulnerability in quequnlong shiyi-blog allows attackers to make the server send unauthorized requests to internal or external systems by manipulating the 'url' parameter in the /app/sys/article/optimize endpoint. Attackers can exploit this remotely without authentication to potentially access internal services, scan networks, or conduct further attacks. All users running shiyi-blog versions up to 1.2.1 are affected.
💻 Affected Systems
- quequnlong shiyi-blog
📦 What is this software?
Shiyi Blog by Quequnlong
⚠️ Risk & Real-World Impact
Worst Case
Attackers could pivot to internal systems, access sensitive data, execute commands on internal services, or use the server as a proxy for attacks against other systems.
Likely Case
Internal network scanning, accessing metadata services (like AWS/Azure instance metadata), or making requests to internal APIs to gather information.
If Mitigated
Limited to port scanning or requests to external systems if internal network access is restricted.
🎯 Exploit Status
Exploit details are publicly available in GitHub repositories, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Vendor has not responded to disclosure. Consider upgrading if newer versions are released or implement workarounds.
🔧 Temporary Workarounds
Input Validation and URL Whitelisting
allImplement server-side validation to restrict URL parameter to allowed domains only
Modify /app/sys/article/optimize endpoint code to validate URL parameter against whitelist
Network Segmentation
allRestrict outbound network access from the shiyi-blog server
Configure firewall rules to block outbound HTTP/HTTPS from shiyi-blog except to required services
🧯 If You Can't Patch
- Implement WAF rules to block requests containing internal IP addresses or sensitive URLs in the url parameter
- Monitor and alert on unusual outbound requests from the shiyi-blog server
🔍 How to Verify
Check if Vulnerable:
Check if running shiyi-blog version 1.2.1 or earlier and test the /app/sys/article/optimize endpoint with SSRF payloadsCheck Version:
Check application version in configuration files or admin interfaceVerify Fix Applied:
Test the endpoint with SSRF payloads after implementing workarounds to ensure they are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual requests to /app/sys/article/optimize with URL parameters containing internal IPs or unusual domains
- Outbound requests from server to unexpected destinations
Network Indicators:
- Unusual outbound HTTP/HTTPS traffic from shiyi-blog server to internal networks or metadata services
SIEM Query:
source="shiyi-blog" AND (uri_path="/app/sys/article/optimize" AND url_parameter CONTAINS "169.254.169.254" OR "192.168." OR "10." OR "172.")