CVE-2025-29157
📋 TL;DR
This vulnerability in petstore v1.0.7 allows remote attackers to execute arbitrary code by accessing a non-existent endpoint that triggers a 404 error page exposing sensitive server information. The exposed details can be leveraged for further attacks. Any system running the vulnerable petstore version is affected.
💻 Affected Systems
- petstore
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, and lateral movement within the network.
Likely Case
Information disclosure revealing server configuration details that could facilitate targeted attacks or reconnaissance for other vulnerabilities.
If Mitigated
Limited information exposure with no direct code execution if proper input validation and error handling are implemented.
🎯 Exploit Status
Exploitation requires accessing a non-existent endpoint to trigger the information disclosure, which is trivial to perform.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.0.8 or later
Vendor Advisory: https://github.com/swagger-api/swagger-petstore
Restart Required: Yes
Instructions:
1. Upgrade petstore to version 1.0.8 or later. 2. Restart the petstore service. 3. Verify the fix by testing non-existent endpoints.
🔧 Temporary Workarounds
Custom Error Page Configuration
allConfigure custom error pages that don't expose sensitive server information
Configure web server (e.g., Tomcat, Spring Boot) to use custom error pages for 404 responses
Input Validation Filter
allImplement request filtering to sanitize or block malformed endpoint requests
Add request validation middleware/filter to check endpoint patterns
🧯 If You Can't Patch
- Implement WAF rules to block requests to non-existent endpoints or filter error responses
- Restrict network access to petstore using firewall rules to limit exposure
🔍 How to Verify
Check if Vulnerable:
Access a non-existent endpoint like /cart or /nonexistent and check if the 404 response contains Servlet name and server version detailsCheck Version:
Check petstore version in application properties or via API endpoint if availableVerify Fix Applied:
After patching, access the same non-existent endpoint and verify the response no longer contains sensitive server information📡 Detection & Monitoring
Log Indicators:
- Multiple 404 errors to non-existent endpoints
- Error logs containing 'Servlet' and version information in stack traces
Network Indicators:
- HTTP 404 responses containing server version details in body
- Repeated requests to unusual/non-existent endpoints
SIEM Query:
http.status_code=404 AND (http.response_body CONTAINS "Servlet" OR http.response_body CONTAINS "version")