CVE-2021-28182 : Vulnerability Insights and Analysis
Discover details about CVE-2021-28182, a critical buffer overflow vulnerability in ASUS BMC's firmware allowing remote attackers to disrupt the Web service. Learn about impacted systems and mitigation steps.
This article provides details about CVE-2021-28182, a vulnerability in ASUS BMC's firmware that allows remote attackers to exploit a buffer overflow in the Web Service configuration function.
Understanding CVE-2021-28182
CVE-2021-28182 is a buffer overflow vulnerability found in ASUS BMC's firmware affecting various products.
What is CVE-2021-28182?
The Web Service configuration function in ASUS BMC's firmware Web management page does not verify the string length entered by users, leading to a Buffer overflow vulnerability. Attackers with privileged access can exploit this to disrupt the Web service.
The Impact of CVE-2021-28182
The vulnerability can be exploited remotely by attackers to cause an abnormal termination of the Web service, potentially impacting system availability.
Technical Details of CVE-2021-28182
The vulnerability is rated with a CVSS base score of 4.9, indicating a medium severity issue with high availability impact. It requires high privileges and has a low attack complexity, making it a significant threat.
Vulnerability Description
The buffer overflow vulnerability in ASUS BMC's firmware arises from inadequate string length verification, enabling attackers to execute malicious code and disrupt services.
Affected Systems and Versions
Products impacted include BMC firmware for Z10PR-D16, ASMB8-iKVM, and Z10PE-D16 WS with specific affected versions.
Exploitation Mechanism
Remote attackers exploit the buffer overflow by leveraging leaked privileged permission to trigger an abnormal termination of the Web service.
Mitigation and Prevention
To address CVE-2021-28182, it is crucial to apply the following security measures:
Immediate Steps to Take
Update ASUS BMC's firmware to the recommended versions to mitigate the vulnerability.
Long-Term Security Practices
Implement strict input validation mechanisms and regular security audits to prevent buffer overflow vulnerabilities.
Patching and Updates
Stay informed about security advisories from ASUS and promptly apply firmware patches to protect against known vulnerabilities.