CVE-2017-12088 : Security Advisory and Response
Learn about CVE-2017-12088, a critical denial of service vulnerability in Allen Bradley Micrologix 1400 Series B FRN 21.2 and earlier versions. Find out the impact, affected systems, exploitation details, and mitigation steps.
A vulnerability in the Ethernet functionality of Allen Bradley Micrologix 1400 Series B FRN 21.2 and earlier versions can lead to denial of service attacks.
Understanding CVE-2017-12088
This CVE involves a critical vulnerability in Allen Bradley devices that can be exploited for denial of service attacks.
What is CVE-2017-12088?
The vulnerability in the Ethernet functionality of Allen Bradley Micrologix 1400 Series B FRN 21.2 and earlier versions allows attackers to trigger a power cycle by sending a specially crafted packet, leading to a fault state and deletion of ladder logic.
The Impact of CVE-2017-12088
The vulnerability has a CVSS base score of 8.6 (High) with a significant impact on availability. An attacker can exploit this flaw with just one unauthenticated packet, potentially causing severe disruption.
Technical Details of CVE-2017-12088
This section provides detailed technical information about the CVE.
Vulnerability Description
- Type: Denial of Service (DoS)
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- Scope: Changed
- User Interaction: None
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
Affected Systems and Versions
- Product: Allen Bradley
- Versions: Micrologix 1400 Series B FRN 21.2, 21.0, 15
Exploitation Mechanism
The vulnerability can be exploited by sending a specifically designed packet to the affected device, causing it to go through a power cycle and enter a fault state.
Mitigation and Prevention
Protecting systems from CVE-2017-12088 is crucial to prevent potential disruptions.
Immediate Steps to Take
- Apply vendor-supplied patches or updates promptly.
- Implement network segmentation to limit exposure.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update and patch all devices and software.
- Conduct security assessments and penetration testing.
- Educate users and administrators on cybersecurity best practices.
Patching and Updates
- Stay informed about security advisories from the vendor.
- Apply patches as soon as they are released to mitigate the vulnerability.