CVE-2017-14463 : Security Advisory and Response
Learn about CVE-2017-14463, a critical access control vulnerability in Allen Bradley Micrologix 1400 Series B FRN 21.2 and earlier versions. Understand the impact, affected systems, exploitation mechanism, and mitigation steps.
A vulnerability in the access control settings of Allen Bradley Micrologix 1400 Series B FRN 21.2 and earlier versions allows unauthorized access to sensitive data, program, and function files, posing a critical risk.
Understanding CVE-2017-14463
This CVE involves a critical access control vulnerability in Allen Bradley Micrologix 1400 Series B FRN 21.2 and earlier versions, potentially leading to unauthorized access and manipulation of system settings.
What is CVE-2017-14463?
The vulnerability enables attackers to exploit access control settings in Allen Bradley Micrologix 1400 Series B FRN 21.2 and earlier, allowing unauthorized access to data, program, and function files.
The Impact of CVE-2017-14463
The vulnerability can result in unauthorized access to sensitive information, alteration of system settings, and modification of ladder logic, all triggered by specially crafted packets.
Technical Details of CVE-2017-14463
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
The vulnerability in Allen Bradley Micrologix 1400 Series B FRN 21.2 and earlier versions allows attackers to gain unauthorized access to data, program, and function files through specially crafted packets.
Affected Systems and Versions
- Product: Allen Bradley
- Vendor: Talos
- Versions: Allen Bradley Micrologix 1400 Series B FRN 21.2, 21.0, 15
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: None
- Scope: Changed
- User Interaction: None
- CVSS Score: 10 (Critical)
- Vector String: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Mitigation and Prevention
Protecting systems from CVE-2017-14463 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Ensure Keyswitch State is not set to REMOTE or PROG
- Monitor for unauthorized access attempts
- Implement network segmentation
Long-Term Security Practices
- Regularly update system firmware
- Conduct security audits and penetration testing
- Train employees on cybersecurity best practices
Patching and Updates
- Apply patches provided by the vendor
- Stay informed about security updates and advisories