CVE-2021-38989 : Exploit Details and Defense Strategies
Learn about CVE-2021-38989 impacting IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1, allowing local users to exploit the AIX kernel for denial of service attacks. Find mitigation steps here.
This article provides detailed information about CVE-2021-38989, a vulnerability affecting IBM AIX and VIOS systems that could lead to denial of service attacks.
Understanding CVE-2021-38989
CVE-2021-38989 is a vulnerability in IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1 that allows a non-privileged local user to exploit the AIX kernel, potentially causing denial of service.
What is CVE-2021-38989?
IBM AIX 7.1, 7.2, 7.3, and VIOS 3.1 are affected by a vulnerability that could be exploited by local users to trigger a denial of service attack within the AIX kernel.
The Impact of CVE-2021-38989
The impact of CVE-2021-38989 is rated as medium severity, with a CVSS base score of 6.2. This vulnerability could result in a denial of service on affected systems, affecting availability significantly.
Technical Details of CVE-2021-38989
CVE-2021-38989 has a CVSS v3.0 base score of 6.2, with attack complexity rated as low, attack vector as local, and availability impact as high. The exploit code maturity is unproven.
Vulnerability Description
The vulnerability allows non-privileged local users to exploit the AIX kernel, potentially leading to a denial of service on affected systems.
Affected Systems and Versions
IBM AIX versions 7.1, 7.2, 7.3, and VIOS version 3.1 are impacted by this vulnerability.
Exploitation Mechanism
The vulnerability can be exploited by non-privileged local users to disrupt the AIX kernel, resulting in denial of service.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-38989, users are advised to take immediate steps, follow long-term security practices, and apply relevant patches and updates.
Immediate Steps to Take
Users should monitor security bulletins from IBM, assess the impact on their systems, and apply official fixes provided by the vendor to address the vulnerability.
Long-Term Security Practices
Implement secure configuration practices, restrict access rights, and regularly update systems and software to enhance overall security posture.
Patching and Updates
Stay informed about security advisories, perform timely patching and updates, and adhere to best practices to protect systems from potential threats.