CVE-2021-21548 : Security Advisory and Response
Learn about CVE-2021-21548, a critical Dell EMC vulnerability allowing man-in-the-middle attacks. Find affected systems, impact, and mitigation steps.
A critical vulnerability has been identified in Dell EMC Unisphere for PowerMax versions before 9.1.0.27, Dell EMC Unisphere for PowerMax Virtual Appliance versions before 9.1.0.27, and PowerMax OS Release 5978. This vulnerability could allow an unauthenticated remote attacker to conduct a man-in-the-middle attack, potentially intercepting and modifying victim's data during transit.
Understanding CVE-2021-21548
This section provides detailed insights into the nature and impact of CVE-2021-21548.
What is CVE-2021-21548?
CVE-2021-21548 relates to an improper certificate validation vulnerability in Dell EMC Unisphere for PowerMax and PowerMax OS. The flaw could be exploited by an attacker to carry out man-in-the-middle attacks.
The Impact of CVE-2021-21548
The vulnerability poses a high risk, as an attacker can intercept and modify victim's data during transit, potentially leading to confidentiality, integrity, and availability breaches.
Technical Details of CVE-2021-21548
Explore the technical aspects and affected systems in this section.
Vulnerability Description
The vulnerability is due to improper certificate validation in the affected Dell EMC products, enabling unauthorized interception of data.
Affected Systems and Versions
- Unisphere for PowerMax versions before 9.1.0.27
- Unisphere for PowerMax Virtual Appliance versions before 9.1.0.27
- PowerMax OS Release 5978
Exploitation Mechanism
The flaw could be exploited by an unauthenticated remote attacker to conduct man-in-the-middle attacks by supplying a crafted certificate.
Mitigation and Prevention
Take immediate steps and adopt long-term security practices to mitigate the risks associated with CVE-2021-21548.
Immediate Steps to Take
- Apply the latest security updates and patches provided by Dell to address the vulnerability.
- Monitor network traffic for any signs of suspicious activities.
Long-Term Security Practices
- Implement proper certificate validation processes within the affected systems.
- Regularly update and patch software to prevent security vulnerabilities.
Patching and Updates
Ensure all Dell EMC Unisphere for PowerMax and related products are updated to versions that are not affected by the vulnerability.