CVE-2020-11720 – Programi Bilanc accounting software versions up... (How to Fix)

Q: What is the severity of CVE-2020-11720?

CVE-2020-11720 has a CVSS score of 9.8 (CRITICAL). Programi Bilanc accounting software versions up to build 007 release 014 install with a hardcoded administrative account (admin/0000) that cannot be changed during setup. This allows attackers to gain administrative access to the software and potentially the underlying system. All installations using default credentials are affected.

📋 TL;DR

Programi Bilanc accounting software versions up to build 007 release 014 install with a hardcoded administrative account (admin/0000) that cannot be changed during setup. This allows attackers to gain administrative access to the software and potentially the underlying system. All installations using default credentials are affected.

💻 Affected Systems

Products:

Programi Bilanc

Versions: Build 007 release 014 (31.01.2020) and possibly earlier versions

Operating Systems: Windows (based on typical accounting software deployment)

Default Config Vulnerable: ⚠️ Yes

Notes: All default installations are vulnerable. The vulnerability exists in the installation process and default configuration.

📦 What is this software?

Bilanc by Bilanc

View all CVEs affecting Bilanc →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of the accounting system, financial data theft, manipulation of financial records, and potential lateral movement to other systems.

🟠

Likely Case

Unauthorized access to sensitive financial data, manipulation of accounting records, and potential data exfiltration.

🟢

If Mitigated

Limited impact with proper network segmentation and monitoring, but still presents authentication bypass risk.

🌐 Internet-Facing: HIGH - If exposed to internet, attackers can easily brute force or guess the default credentials.

🏢 Internal Only: HIGH - Internal attackers or compromised systems can exploit this with minimal effort.

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: CONFIRMED

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Exploitation requires only knowledge of default credentials (admin/0000). No technical exploit code needed beyond standard authentication attempts.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown

Vendor Advisory: No vendor advisory found in provided references

Restart Required: No

Instructions:

No official patch available. Users must manually change the default password immediately after installation.

🔧 Temporary Workarounds

Change Default Admin Password

all

Immediately change the default admin password from '0000' to a strong, unique password

Login to Programi Bilanc as admin/0000
Navigate to user management settings
Change admin password to strong alternative

Disable Default Admin Account

all

Create new administrative account with strong credentials and disable the default admin account

Login as admin/0000
Create new administrative user with strong password
Logout and login with new account
Disable or delete default admin account

🧯 If You Can't Patch

Implement network segmentation to isolate Programi Bilanc systems from internet and untrusted networks
Enable detailed authentication logging and monitor for login attempts using default credentials

🔍 How to Verify

Check if Vulnerable:

Attempt to login to Programi Bilanc using credentials admin/0000. If successful, the system is vulnerable.

Check Version:

Check software version in Programi Bilanc interface or installation directory properties

Verify Fix Applied:

Attempt to login with admin/0000 credentials. Access should be denied. Verify new administrative credentials work properly.

📡 Detection & Monitoring

Log Indicators:

Successful authentication with username 'admin'
Multiple failed login attempts followed by successful admin login
Authentication from unexpected IP addresses

Network Indicators:

Authentication traffic to Programi Bilanc service from untrusted networks
Brute force patterns targeting the application

SIEM Query:

source="programi_bilanc_logs" AND (event_type="authentication_success" AND username="admin") OR (event_type="authentication_failure" AND username="admin")

📊 Metadata

CVE ID: CVE-2020-11720

CVSS v3 Score: 9.8 (CRITICAL)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-798

Published: December 23, 2020

Last Updated: November 21, 2024

🔗 References

http://packetstormsecurity.com/files/160623/Programi-Bilanc-Build-007-Release-014-31.01.2020-Weak-Default-Password.html Third Party Advisory,VDB Entry
http://seclists.org/fulldisclosure/2020/Dec/34 Mailing List,Third Party Advisory
http://packetstormsecurity.com/files/160623/Programi-Bilanc-Build-007-Release-014-31.01.2020-Weak-Default-Password.html Third Party Advisory,VDB Entry
http://seclists.org/fulldisclosure/2020/Dec/34 Mailing List,Third Party Advisory

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🔗 Related Vulnerabilities

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