CVE-2020-28206 Explained : Impact and Mitigation

An issue was discovered in Bitrix24 Bitrix Framework (1c site management) 20.0, leading to a vulnerability that allows user enumeration and improper restriction of excessive authentication attempts.

Understanding CVE-2020-28206

What is CVE-2020-28206?

This CVE identifies a vulnerability in the admin login form of Bitrix24 Bitrix Framework 20.0, enabling remote attackers to enumerate users in the administrator group and conduct brute-force attacks on non-administrator passwords.

The Impact of CVE-2020-28206

The vulnerability poses a significant security risk by potentially exposing user accounts to unauthorized access through user enumeration and brute-force attacks.

Technical Details of CVE-2020-28206

Vulnerability Description

The flaw in the admin login form of Bitrix24 Bitrix Framework 20.0 allows remote attackers to enumerate users in the administrator group and launch brute-force attacks on non-administrator passwords.

Affected Systems and Versions

Product: Bitrix24 Bitrix Framework (1c site management) 20.0
Vendor: Bitrix24
Versions: All versions are affected

Exploitation Mechanism

Attackers exploit the vulnerability by targeting the admin login form, enabling them to enumerate users in the administrator group and perform brute-force attacks on non-administrator passwords.

Mitigation and Prevention

Immediate Steps to Take

Implement strong password policies and encourage users to use complex passwords
Monitor login attempts for unusual patterns that may indicate brute-force attacks

Long-Term Security Practices

Regularly update the Bitrix24 Bitrix Framework to the latest version to patch known vulnerabilities
Conduct security training for users to raise awareness about the risks of weak passwords

Patching and Updates

Apply patches and security updates provided by Bitrix24 promptly to address the vulnerability and enhance system security