CVE-2021-43978
📋 TL;DR
Allegro Windows 3.3.4152.0 embeds hardcoded database administrator credentials in its binary files, allowing any user with access to the software to extract and use these credentials to access and modify the database. This affects all installations of Allegro Windows version 3.3.4152.0, potentially compromising the integrity and confidentiality of the database.
💻 Affected Systems
- Allegro Windows
📦 What is this software?
Allegro by Allegro
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full administrative access to the database, allowing them to exfiltrate sensitive data, modify or delete records, or execute arbitrary commands on the database server.
Likely Case
Users with local access to the software extract credentials and perform unauthorized database operations, leading to data breaches or system manipulation.
If Mitigated
If proper network segmentation and access controls are in place, the impact may be limited to local database access without broader network compromise.
🎯 Exploit Status
Exploitation requires local access to extract credentials from binary files, but the process is straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to a version beyond 3.3.4152.0 (check vendor for specific fixed version)
Vendor Advisory: https://www.allegro.be/
Restart Required: Yes
Instructions:
1. Visit the Allegro website for the latest version. 2. Download and install the updated software. 3. Restart the system to apply changes. 4. Change database credentials after patching.
🔧 Temporary Workarounds
Restrict Binary Access
windowsLimit file system permissions to the Allegro Windows binary files to prevent unauthorized users from accessing them.
icacls "C:\Path\To\Allegro.exe" /deny Users:(R)
Network Segmentation
allIsolate the database server from other network segments to reduce the impact if credentials are compromised.
🧯 If You Can't Patch
- Implement strict access controls to limit who can run or access the Allegro Windows software.
- Monitor database access logs for unusual activity using the embedded credentials.
🔍 How to Verify
Check if Vulnerable:
Check the software version in the application's about dialog or via file properties; if it is 3.3.4152.0, it is vulnerable.Check Version:
wmic product where name="Allegro Windows" get versionVerify Fix Applied:
Verify the software version has been updated to a version beyond 3.3.4152.0 and test that database credentials are no longer embedded or have been changed.📡 Detection & Monitoring
Log Indicators:
- Unusual database login attempts using the embedded credentials
- Access to Allegro binary files by unauthorized users
Network Indicators:
- Database connections from unexpected sources or at unusual times
SIEM Query:
source="database_logs" AND (user="embedded_admin" OR action="unauthorized_access")