CVE-2025-65287
📋 TL;DR
An unauthenticated directory traversal vulnerability in SNMP Web Pro 1.1 allows remote attackers to read arbitrary files on the server. The vulnerability exists in the upload.cgi script which improperly handles user-supplied parameters without validation. Any system running SNMP Web Pro 1.1 with the vulnerable CGI script exposed is affected.
💻 Affected Systems
- SNMP Web Pro
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could read sensitive system files like /etc/passwd, /etc/shadow, configuration files, or application source code, potentially leading to credential theft, privilege escalation, or further system compromise.
Likely Case
Attackers will read accessible files within the web server's privilege context, potentially exposing configuration files, user data, or other sensitive information stored in predictable locations.
If Mitigated
With proper network segmentation and access controls, impact is limited to files accessible by the web server process, though sensitive information could still be exposed.
🎯 Exploit Status
The vulnerability is straightforward to exploit with simple HTTP requests containing directory traversal sequences. No authentication is required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch is available. Consider workarounds or replacing the software.
🔧 Temporary Workarounds
Disable vulnerable CGI script
linuxRemove or disable execute permissions on the vulnerable upload.cgi script
chmod -x /var/www/cgi-bin/upload.cgi
mv /var/www/cgi-bin/upload.cgi /var/www/cgi-bin/upload.cgi.disabled
Web server access control
allConfigure web server to block access to the vulnerable CGI endpoint
# For Apache: Add to .htaccess or virtual host config
<Location "/cgi-bin/upload.cgi">
Deny from all
</Location>
# For Nginx: Add to server block
location = /cgi-bin/upload.cgi {
deny all;
return 403;
}
🧯 If You Can't Patch
- Implement strict network access controls to limit access to the vulnerable system to trusted IP addresses only.
- Deploy a web application firewall (WAF) with rules to detect and block directory traversal attempts.
🔍 How to Verify
Check if Vulnerable:
Test by sending HTTP GET request to /cgi-bin/upload.cgi with directory traversal parameters: curl -v 'http://target/cgi-bin/upload.cgi?params=../../../etc/passwd'Check Version:
Check application documentation or configuration files for version information. No standard command available.Verify Fix Applied:
After applying workarounds, attempt the same test and verify you receive 403/404 error or no file content is returned.📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /cgi-bin/upload.cgi containing '../' sequences
- Unusual file access patterns from web server process
- Failed file access attempts in web server logs
Network Indicators:
- HTTP requests with URL-encoded directory traversal sequences (%2e%2e%2f)
- Multiple rapid requests to the same CGI endpoint with varying parameters
SIEM Query:
source="web_server" AND (url="*/cgi-bin/upload.cgi*" AND (params="*../*" OR params="*..%2f*" OR params="*%2e%2e%2f*"))