CVE-2021-42774 : Exploit Details and Defense Strategies
Discover the impact of CVE-2021-42774 on systems running Broadcom Emulex HBA Manager/One Command Manager. Learn about the buffer overflow vulnerability and steps for mitigation.
Broadcom Emulex HBA Manager/One Command Manager versions before 11.4.425.0 and 12.8.542.31 have a buffer overflow vulnerability in the remote firmware download feature, allowing unauthenticated remote users to initiate attacks.
Understanding CVE-2021-42774
What is CVE-2021-42774?
The vulnerability exists in Broadcom Emulex HBA Manager/One Command Manager versions prior to 11.4.425.0 and 12.8.542.31 when not installed in Strictly Local Management mode. This flaw enables remote unauthenticated users to execute various attacks through the remote firmware download feature.
The Impact of CVE-2021-42774
The vulnerability permits unauthenticated remote users to potentially compromise the affected systems, leading to unauthorized access and other malicious activities.
Technical Details of CVE-2021-42774
Vulnerability Description
The buffer overflow vulnerability in Broadcom Emulex HBA Manager/One Command Manager versions before 11.4.425.0 and 12.8.542.31 allows unauthenticated remote attackers to exploit the remote firmware download feature.
Affected Systems and Versions
- Affected versions: before 11.4.425.0 and 12.8.542.31
- Systems not installed in Strictly Local Management mode
Exploitation Mechanism
- Vulnerability in the remote firmware download feature
- Attackers can leverage this flaw to execute various attacks
Mitigation and Prevention
Immediate Steps to Take
- Apply the latest security patches released by Broadcom
- Configure the affected systems to operate in Strictly Local Management mode
Long-Term Security Practices
- Regularly monitor and update firmware versions
- Implement network segmentation to minimize attack surface
Patching and Updates
- Ensure all systems are updated to versions 11.4.425.0 and 12.8.542.31 to mitigate the vulnerability