CVE-2020-15931 Explained : Impact and Mitigation
Discover the security vulnerability in Netwrix Account Lockout Examiner before version 5.1 allowing attackers to capture authentication challenge hashes. Learn how to mitigate and prevent this issue.
Netwrix Account Lockout Examiner before version 5.1 is vulnerable to a security issue that allows remote attackers to capture authentication challenge hashes.
Understanding CVE-2020-15931
This CVE identifies a vulnerability in Netwrix Account Lockout Examiner that could lead to the exposure of sensitive authentication information.
What is CVE-2020-15931?
Netwrix Account Lockout Examiner before version 5.1 is susceptible to a security flaw that enables remote attackers to capture the Net-NTLMv1/v2 authentication challenge hash of the Domain Administrator.
The Impact of CVE-2020-15931
The vulnerability allows attackers to obtain sensitive authentication data, potentially compromising the security of the Domain Administrator's account.
Technical Details of CVE-2020-15931
Netwrix Account Lockout Examiner before version 5.1 is affected by a specific security issue.
Vulnerability Description
Attackers can capture the Net-NTLMv1/v2 authentication challenge hash of the Domain Administrator by triggering a Kerberos Pre-Authentication Failed event on a Domain Controller.
Affected Systems and Versions
- Product: Netwrix Account Lockout Examiner
- Versions affected: Before 5.1
Exploitation Mechanism
- Attackers generate a single Kerberos Pre-Authentication Failed event on a Domain Controller to capture the authentication challenge hash.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.
Immediate Steps to Take
- Update Netwrix Account Lockout Examiner to version 5.1 or newer to mitigate the vulnerability.
- Monitor for any suspicious activity related to authentication challenges.
Long-Term Security Practices
- Implement strong password policies and multi-factor authentication to enhance security.
- Regularly review and update security configurations to prevent similar vulnerabilities.
Patching and Updates
- Apply patches and updates provided by Netwrix to address security vulnerabilities and enhance system protection.