CVE-2020-4719 : Exploit Details and Defense Strategies

IBM Cloud APM 8.1.4 server has a vulnerability that could allow an authenticated user to create non-hostname DNS query strings, impacting integrity.

Understanding CVE-2020-4719

The vulnerability in IBM Cloud APM 8.1.4 could be exploited by an authenticated user with admin authorization to manipulate DNS queries.

What is CVE-2020-4719?

The IBM Cloud APM 8.1.4 server can be tricked into issuing DNS requests for non-hostname query strings, potentially leading to security bypass.

The Impact of CVE-2020-4719

The vulnerability poses a medium severity risk with a CVSS base score of 4.9, affecting integrity and requiring high privileges for exploitation.

Technical Details of CVE-2020-4719

The technical details shed light on the specifics of the vulnerability.

Vulnerability Description

The issue allows an authenticated user to create DNS query strings that are not hostnames, impacting the server's integrity.

Affected Systems and Versions

Product: Cloud APM
Vendor: IBM
Version: 8.1.4

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: High
User Interaction: None
Exploit Code Maturity: Unproven

Mitigation and Prevention

Protecting systems from CVE-2020-4719 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply the official fix provided by IBM to address the vulnerability.
Monitor and restrict user permissions to minimize the risk of exploitation.

Long-Term Security Practices

Regularly update and patch the IBM Cloud APM server to prevent future vulnerabilities.
Conduct security training for users to raise awareness about potential threats.

Patching and Updates

IBM has released an official fix to remediate the vulnerability.