CVE-2020-10563
📋 TL;DR
CVE-2020-10563 is a SQL injection vulnerability in DEVOME GRR's frmcontactlist.php file that allows attackers to execute arbitrary SQL commands. This affects all users of GRR versions before 3.4.1c. Successful exploitation could lead to data theft, modification, or deletion.
💻 Affected Systems
- DEVOME GRR
📦 What is this software?
Grr by Devome
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data exfiltration, modification, or deletion; potential remote code execution if database functions allow it.
Likely Case
Unauthorized access to sensitive contact data, potential privilege escalation, and data manipulation.
If Mitigated
Limited impact with proper input validation and parameterized queries in place.
🎯 Exploit Status
SQL injection vulnerabilities typically have low exploitation complexity when unauthenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.4.1c
Vendor Advisory: https://github.com/JeromeDevome/GRR/releases/tag/v3.4.1c
Restart Required: No
Instructions:
1. Download GRR version 3.4.1c from GitHub releases. 2. Replace existing installation files with patched version. 3. Verify the frmcontactlist.php file has been updated.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation for all user inputs in frmcontactlist.php
WAF Rule
allDeploy web application firewall rules to block SQL injection patterns
🧯 If You Can't Patch
- Restrict access to frmcontactlist.php to authorized users only
- Implement network segmentation to isolate the GRR application
🔍 How to Verify
Check if Vulnerable:
Check if GRR version is below 3.4.1c and examine frmcontactlist.php for lack of parameterized queriesCheck Version:
Check GRR configuration files or admin interface for version informationVerify Fix Applied:
Verify GRR version is 3.4.1c or higher and check commit 2c6edacd9e15c75a0c2ef472470481ffb6edc7d8 is applied📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts or SQL errors in web server logs
Network Indicators:
- Unusual database connection patterns from web server
- SQL injection patterns in HTTP requests
SIEM Query:
source="web_logs" AND ("sql" OR "injection" OR "frmcontactlist.php")🔗 References
- https://cvecps.mitre.org/cps/workitems/create/?cveId=CVE-2020-10563
- https://github.com/JeromeDevome/GRR/commit/2c6edacd9e15c75a0c2ef472470481ffb6edc7d8
- https://github.com/JeromeDevome/GRR/releases/tag/v3.4.1c
- https://cvecps.mitre.org/cps/workitems/create/?cveId=CVE-2020-10563
- https://github.com/JeromeDevome/GRR/commit/2c6edacd9e15c75a0c2ef472470481ffb6edc7d8
- https://github.com/JeromeDevome/GRR/releases/tag/v3.4.1c
