CVE-2020-4420 : What You Need to Know
Learn about CVE-2020-4420 affecting IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, 11.1, and 11.5. Find out the impact, affected systems, and mitigation steps.
IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, 11.1, and 11.5 are vulnerable to a denial of service attack due to a hang in the execution of a terminate command.
Understanding CVE-2020-4420
IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, 11.1, and 11.5 are susceptible to a denial of service vulnerability that could be exploited by an unauthenticated attacker.
What is CVE-2020-4420?
CVE-2020-4420 is a vulnerability in IBM DB2 for Linux, UNIX, and Windows that could allow an unauthenticated attacker to cause a denial of service by triggering a hang in the execution of a terminate command.
The Impact of CVE-2020-4420
The vulnerability has a CVSS base score of 7.5 (High severity) with a high impact on availability. An attacker can exploit this issue remotely without requiring privileges.
Technical Details of CVE-2020-4420
IBM DB2 for Linux, UNIX, and Windows versions 9.7, 10.1, 10.5, 11.1, and 11.5 are affected by this vulnerability.
Vulnerability Description
The vulnerability allows an unauthenticated attacker to cause a denial of service by hanging the execution of a terminate command in IBM DB2.
Affected Systems and Versions
- DB2 for Linux- UNIX and Windows 9.7
- DB2 for Linux- UNIX and Windows 10.1
- DB2 for Linux- UNIX and Windows 10.5
- DB2 for Linux- UNIX and Windows 11.1
- DB2 for Linux- UNIX and Windows 11.5
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Availability Impact: High
- Exploit Code Maturity: Unproven
- Privileges Required: None
Mitigation and Prevention
Immediate Steps to Take:
- Apply the official fix provided by IBM to address the vulnerability.
- Monitor IBM's security bulletin for updates and patches.
Long-Term Security Practices:
- Regularly update and patch IBM DB2 installations.
- Implement network security measures to prevent unauthorized access.
- Conduct regular security assessments and audits.
- Stay informed about security vulnerabilities and best practices.
Patching and Updates
Ensure that you apply the official fix provided by IBM to mitigate the CVE-2020-4420 vulnerability.