CVE-2021-28197 : Vulnerability Insights and Analysis
Learn about CVE-2021-28197, a Buffer Overflow vulnerability in ASUS BMC's firmware, allowing remote attackers to disrupt the Web service. Find details, impact, and mitigation steps here.
This article discusses a Buffer Overflow vulnerability in ASUS BMC's firmware that allows remote attackers to conduct an attack on the Active Directory configuration function.
Understanding CVE-2021-28197
This CVE highlights a security flaw in ASUS BMC's firmware that could lead to a buffer overflow vulnerability in the Active Directory configuration function.
What is CVE-2021-28197?
The vulnerability arises due to a lack of validation of user input strings in the Active Directory configuration function of ASUS BMC's firmware, enabling remote attackers to exploit this flaw and disrupt the Web service.
The Impact of CVE-2021-28197
The vulnerability poses a medium-level threat with a CVSS base score of 4.9 and high availability impact. Attackers with high privileges can exploit this issue to disrupt the Web service.
Technical Details of CVE-2021-28197
This section covers the specific details related to the vulnerability.
Vulnerability Description
The vulnerability in ASUS BMC's firmware occurs due to inadequate string length validation, leading to a buffer overflow when interacting with the Active Directory configuration function.
Affected Systems and Versions
Various ASUS products running specific firmware versions are impacted, including ESC4000 G4X 1.15.6, RS700-E9-RS12 1.15.4, RS100-E10-PI2 1.15.3, and others.
Exploitation Mechanism
Remote attackers can exploit this vulnerability by sending specially crafted input strings to the Active Directory configuration function, resulting in a buffer overflow situation and unauthorized termination of Web services.
Mitigation and Prevention
To address the CVE-2021-28197 vulnerability, users are advised to update the affected BMC firmware to the following versions:
- ESC4000 G4X 1.15.6
- RS700-E9-RS12 1.15.4
- RS100-E10-PI2 1.15.3
- RS300-E10-PS4 1.15.3
- RS... (full list provided in the solution section).
Immediate Steps to Take
Users should promptly apply the recommended firmware updates provided by ASUS to mitigate the vulnerability and enhance system security.
Long-Term Security Practices
Regularly update BMC firmware and other system software to address known vulnerabilities and enhance the overall security posture.
Patching and Updates
Stay informed about the latest firmware updates and security advisories from ASUS to protect your systems against potential threats.