CVE-2025-6089
📋 TL;DR
This vulnerability in Astun Technology iShare Maps allows attackers to redirect users to malicious websites by manipulating the 'ref' parameter in atCheckJS.aspx. It affects iShare Maps version 5.4.0 and can be exploited remotely without authentication. Organizations using this specific version are at risk of phishing attacks.
💻 Affected Systems
- Astun Technology iShare Maps
📦 What is this software?
Ishare Maps by Astuntechnology
⚠️ Risk & Real-World Impact
Worst Case
Users could be redirected to phishing sites that steal credentials or deliver malware, potentially leading to account compromise or system infection.
Likely Case
Attackers use the redirect for phishing campaigns to steal user credentials or distribute malware.
If Mitigated
With proper web application firewalls and user education, impact is limited to failed phishing attempts.
🎯 Exploit Status
Exploit has been publicly disclosed and open redirect vulnerabilities are commonly weaponized for phishing.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None provided
Restart Required: No
Instructions:
No official patch available. Contact Astun Technology for updates or consider upgrading to a newer version if available.
🔧 Temporary Workarounds
Input Validation for ref Parameter
allImplement server-side validation to ensure the ref parameter only contains allowed URLs or domains.
Modify atCheckJS.aspx to validate ref parameter against whitelist
Web Application Firewall Rule
allAdd WAF rule to block requests with suspicious ref parameter values.
Add rule: Block requests where ref parameter contains external domains or suspicious patterns
🧯 If You Can't Patch
- Implement strict input validation on the ref parameter to only allow known, trusted URLs
- Deploy a web application firewall with rules to detect and block open redirect attempts
🔍 How to Verify
Check if Vulnerable:
Test by accessing atCheckJS.aspx with a malicious ref parameter value pointing to external domainCheck Version:
Check iShare Maps version in application interface or configuration filesVerify Fix Applied:
Test that ref parameter validation prevents redirects to unauthorized domains📡 Detection & Monitoring
Log Indicators:
- Unusual redirect patterns in web server logs
- Requests to atCheckJS.aspx with external URLs in ref parameter
Network Indicators:
- HTTP 302 redirects to unexpected domains from atCheckJS.aspx
SIEM Query:
web.url:*atCheckJS.aspx* AND web.query:ref=*http*