CVE-2020-6088 : Security Advisory and Response
Learn about CVE-2020-6088, a high-severity denial of service vulnerability in Allen-Bradley Flex IO 1794-AENT/B 4.003. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
An exploitable denial of service vulnerability exists in the ENIP Request Path Network Segment functionality of Allen-Bradley Flex IO 1794-AENT/B 4.003. A specially crafted network request can cause a loss of communications with the device resulting in denial-of-service. An attacker can send a malicious packet to trigger this vulnerability.
Understanding CVE-2020-6088
This CVE involves a denial of service vulnerability in Allen-Bradley Flex IO 1794-AENT/B 4.003.
What is CVE-2020-6088?
CVE-2020-6088 is a vulnerability that allows an attacker to disrupt communications with the Allen-Bradley Flex IO 1794-AENT/B 4.003 device through a specially crafted network request, leading to a denial-of-service condition.
The Impact of CVE-2020-6088
The impact of this vulnerability is rated as high with a CVSS base score of 7.5. It can result in a loss of communications with the affected device, causing a denial-of-service situation.
Technical Details of CVE-2020-6088
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability is classified as CWE-120, involving a buffer copy without checking the size of the input, also known as a 'Classic Buffer Overflow'.
Affected Systems and Versions
- Product: Allen-Bradley Flex IO 1794-AENT/B 4.003
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Availability Impact: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
Mitigation and Prevention
Protecting systems from CVE-2020-6088 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-supplied patches or updates promptly.
- Implement network segmentation to limit the impact of potential attacks.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Conduct security assessments and penetration testing to identify vulnerabilities.
- Educate users and administrators about safe network practices.
Patching and Updates
- Stay informed about security advisories from the vendor.
- Apply patches and updates as soon as they are available to mitigate the vulnerability.