CVE-2021-41992 : Vulnerability Insights and Analysis
Discover the CVE-2021-41992 details including a cryptographic weakness in PingID Windows Login pre-2.7, possibly leading to offline MFA bypass. Learn impact, mitigation steps, and affected systems.
Ping Identity credits The Commonwealth Bank of Australia for the discovery of this vulnerability.
Understanding CVE-2021-41992
A misconfiguration of RSA in PingID Windows Login prior to 2.7 is vulnerable to pre-computed dictionary attacks, leading to an offline MFA bypass.
What is CVE-2021-41992?
This CVE relates to a cryptographic weakness in the PingID Windows Login software version less than 2.7, allowing pre-computed dictionary attacks that can result in an offline multi-factor authentication (MFA) bypass.
The Impact of CVE-2021-41992
- CVSS Base Score: 7.7 (High)
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: High
- Scope: Changed
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: None
- Users can be at risk of unauthorized access due to a weakness in the RSA implementation, potentially leading to compromised data integrity and confidentiality.
Technical Details of CVE-2021-41992
Vulnerability Description
The vulnerability stems from the misconfiguration of RSA in PingID Windows Login before version 2.7, exposing it to pre-computed dictionary attacks for an offline MFA bypass.
Affected Systems and Versions
- Affected Platform: Windows
- Affected Product: PingID Windows Login
- Affected Versions: Less than 2.7 (unspecified, custom version)
Exploitation Mechanism
- Attackers exploit the RSA cryptographic weakness to launch pre-computed dictionary attacks, bypassing multi-factor authentication offline.
Mitigation and Prevention
Immediate Steps to Take
- Update PingID Windows Login to version 2.7 or higher to address the vulnerability.
- Regularly monitor for any unusual login activities that could indicate a breach.
Long-Term Security Practices
- Implement strong password policies and multi-factor authentication mechanisms.
- Conduct regular security audits and penetration testing to identify and address vulnerabilities.
Patching and Updates
- Stay informed about security updates and patches released by Ping Identity for PingID Windows Login to ensure ongoing protection.