CVE-2017-3141 Explained : Impact and Mitigation

The unquoted service path used by the BIND installer on Windows has the potential to allow privilege escalation for a local user, affecting various versions of BIND.

Understanding CVE-2017-3141

This CVE highlights a vulnerability in the BIND installer on Windows that could lead to privilege escalation for local users.

What is CVE-2017-3141?

The vulnerability arises from the unquoted service path in the BIND installer on Windows, potentially enabling local users to escalate privileges.

The Impact of CVE-2017-3141

CVSS Score: 7.2 (High Severity)
Attack Vector: Local
Impact: High impact on confidentiality, integrity, and availability
Privileges Required: High
Scope: Changed
User Interaction: Required
Exploits: No known active exploits, but the weakness is a well-known attack vector.

Technical Details of CVE-2017-3141

The technical details of the vulnerability in the BIND installer on Windows.

Vulnerability Description

The unquoted service path in the BIND installer on Windows can lead to privilege escalation.

Affected Systems and Versions

Versions affected include 9.2.6-P2 to 9.2.9, 9.3.2-P1 to 9.3.6, 9.4.0 to 9.8.8, and more.

Exploitation Mechanism

No known active exploits, but improper user file access permissions can facilitate attacks.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2017-3141 vulnerability.

Immediate Steps to Take

Upgrade to the patched release closest to your current BIND version.
Ensure host file permissions prevent the creation of binaries in vulnerable locations.

Long-Term Security Practices

Regularly update BIND to the latest versions.
Implement strong file system permissions to prevent unauthorized access.

Patching and Updates

Download patched releases from the ISC website.