CVE-2023-47473
📋 TL;DR
This CVE describes a directory traversal vulnerability in fuwushe.org iFair software versions 23.8_ad0 and earlier. Attackers can exploit this vulnerability to read arbitrary files on the server by crafting malicious scripts. Organizations using affected iFair versions are at risk of sensitive information disclosure.
💻 Affected Systems
- fuwushe.org iFair
📦 What is this software?
Ifair by Fuwushe
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise through reading sensitive configuration files, credentials, or system files leading to further attacks.
Likely Case
Unauthorized access to sensitive business data, configuration files, or user information stored on the server.
If Mitigated
Limited impact with proper file permissions and network segmentation preventing access to critical system files.
🎯 Exploit Status
Public proof-of-concept documentation exists showing exploitation techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Check vendor website for updates or consider alternative software.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation to block directory traversal sequences like ../, ..\, and absolute paths
Implement server-side validation to sanitize all user inputs before processing
File Access Restriction
allConfigure web server to restrict file access to specific directories only
Configure web server (Apache/Nginx/IIS) to deny access to parent directories
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block directory traversal patterns
- Restrict network access to iFair instances using firewall rules and network segmentation
🔍 How to Verify
Check if Vulnerable:
Test if the application allows accessing files outside web root using traversal sequences like ../../etc/passwdCheck Version:
Check iFair version in application interface or configuration filesVerify Fix Applied:
Verify that traversal attempts return access denied errors and cannot read files outside intended directories📡 Detection & Monitoring
Log Indicators:
- Multiple failed attempts to access files with ../ patterns
- Successful access to files outside web root directory
Network Indicators:
- HTTP requests containing ../, ..\, or absolute file paths in parameters
SIEM Query:
web.url:*../* OR web.uri:*../* OR http.request.uri:*../*🔗 References
- https://github.com/THMOAS0/SSR123/blob/main/%E4%BC%81%E8%AF%ADiFair%20Any%20file%20read.pdf
- https://www.yuque.com/ssr123/gxhh8t/xv5oxd5i5pxmxd1a?singleDoc
- https://github.com/THMOAS0/SSR123/blob/main/%E4%BC%81%E8%AF%ADiFair%20Any%20file%20read.pdf
- https://www.yuque.com/ssr123/gxhh8t/xv5oxd5i5pxmxd1a?singleDoc
