CVE-2019-0683 : Security Advisory and Response

Active Directory Forest trusts suffer from an elevation of privilege vulnerability due to a preset option that allows attackers to request delegation of a TGT for an identity from the trusted forest, known as the 'Active Directory Elevation of Privilege Vulnerability'.

Understanding CVE-2019-0683

This CVE involves an elevation of privilege vulnerability in Active Directory Forest trusts.

What is CVE-2019-0683?

This vulnerability arises from a default setting that permits attackers in the trusting forest to request delegation of a TGT for an identity from the trusted forest.

The Impact of CVE-2019-0683

The 'Active Directory Elevation of Privilege Vulnerability' can lead to unauthorized access and potential compromise of sensitive information within the affected systems.

Technical Details of CVE-2019-0683

This section provides technical insights into the CVE-2019-0683 vulnerability.

Vulnerability Description

The vulnerability allows attackers in the trusting forest to request delegation of a TGT for an identity from the trusted forest, leading to an elevation of privilege.

Affected Systems and Versions

Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Core installation)
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 for 32-bit Systems Service Pack 2 (Core installation)
Windows Server 2008 for Itanium-Based Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Core installation)

Exploitation Mechanism

The vulnerability can be exploited by attackers in the trusting forest to request delegation of a TGT for an identity from the trusted forest, thereby gaining elevated privileges.

Mitigation and Prevention

Protecting systems from CVE-2019-0683 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security updates provided by Microsoft promptly.
Monitor and restrict access to critical systems and resources.
Implement least privilege access controls.

Long-Term Security Practices

Regularly review and update trust relationships in Active Directory.
Conduct security assessments and penetration testing to identify vulnerabilities.

Patching and Updates

Microsoft has released patches to address the vulnerability. Ensure all affected systems are updated with the latest security fixes.