CVE-2020-24985
📋 TL;DR
This vulnerability allows authenticated users in Quadbase EspressReports ES 7 to manipulate the frmsrc parameter to retrieve and execute external files or payloads. It affects organizations using Quadbase EspressReports ES 7 Update 9, enabling potential remote code execution.
💻 Affected Systems
- Quadbase EspressReports ES
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker gains authenticated access, executes arbitrary code on the server, and achieves full system compromise.
Likely Case
Authenticated users with malicious intent execute unauthorized code, potentially stealing data or disrupting operations.
If Mitigated
With strict access controls and monitoring, impact is limited to authorized users only, reducing risk of exploitation.
🎯 Exploit Status
Exploitation involves simple parameter manipulation; authenticated access is required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update beyond 7 Update 9 or apply vendor patch
Vendor Advisory: https://www.quadbase.com/security-advisories
Restart Required: Yes
Instructions:
1. Check current version. 2. Apply vendor-provided patch or upgrade to a fixed version. 3. Restart the application service.
🔧 Temporary Workarounds
Restrict Access to MenuPage
allLimit access to the vulnerable MenuPage section using network controls or application firewalls.
Input Validation
allImplement server-side validation to block malicious frmsrc parameter values.
🧯 If You Can't Patch
- Isolate the application in a segmented network to limit exposure.
- Enforce strict authentication and monitor user activities for suspicious parameter changes.
🔍 How to Verify
Check if Vulnerable:
Check if using Quadbase EspressReports ES 7 Update 9 and test frmsrc parameter manipulation in MenuPage.Check Version:
Check application version in admin interface or configuration files.Verify Fix Applied:
After patching, attempt to exploit the frmsrc parameter; successful execution should be blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual frmsrc parameter values in application logs
- Multiple failed access attempts to MenuPage
Network Indicators:
- Unexpected outbound connections from the application server
SIEM Query:
source="app_logs" AND (frmsrc CONTAINS "http" OR frmsrc CONTAINS "file")