CVE-2024-48535
📋 TL;DR
A stored cross-site scripting (XSS) vulnerability in eSoft Planner allows attackers to inject malicious scripts into the Name parameter, which are then executed when other users view the affected content. This affects all users of eSoft Planner 3.24.08271-USA who can access the vulnerable interface.
💻 Affected Systems
- eSoft Planner
📦 What is this software?
Esoft Planner by Esoftplanner
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, redirect users to malicious sites, perform actions on behalf of authenticated users, or install malware through drive-by downloads.
Likely Case
Session hijacking, credential theft, or defacement of the application interface through injected content.
If Mitigated
Limited impact if proper input validation and output encoding are implemented, though some functionality disruption may occur.
🎯 Exploit Status
Exploitation requires access to the vulnerable Name parameter field, which typically requires some level of authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Check vendor website for updates or apply workarounds.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize the Name parameter by removing or encoding HTML/JavaScript special characters.
Content Security Policy
allImplement a strict Content Security Policy header to prevent execution of inline scripts and restrict script sources.
Content-Security-Policy: default-src 'self'; script-src 'self'
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads in the Name parameter
- Disable or restrict access to the vulnerable interface until a fix is available
🔍 How to Verify
Check if Vulnerable:
Test by entering a basic XSS payload like <script>alert('XSS')</script> into the Name parameter and check if it executes when viewed.Check Version:
Check application version in admin interface or configuration filesVerify Fix Applied:
After implementing controls, test with the same payload to ensure it's properly sanitized or blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual characters or script tags in Name parameter logs
- Multiple failed input validation attempts
Network Indicators:
- HTTP requests containing script tags or JavaScript in Name parameter
SIEM Query:
web_requests WHERE url_parameters CONTAINS '<script>' OR url_parameters CONTAINS 'javascript:'