CVE-2021-21510 : What You Need to Know
Learn about CVE-2021-21510 affecting Dell iDRAC8 versions < 2.75.100.75. Understand the impact, technical details, and mitigation steps to prevent exploitation.
Dell iDRAC8 versions prior to 2.75.100.75 have a host header injection vulnerability that could be potentially exploited by a remote unauthenticated attacker. This CVE was made public on March 4, 2021.
Understanding CVE-2021-21510
This section delves into the details of the CVE-2021-21510 vulnerability in Dell's Integrated Dell Remote Access Controller (iDRAC).
What is CVE-2021-21510?
CVE-2021-21510 pertains to a host header injection vulnerability in Dell iDRAC8 versions earlier than 2.75.100.75. Attackers can inject arbitrary 'Host' header values to poison a web-cache or trigger redirects.
The Impact of CVE-2021-21510
The exploit could enable a remote unauthenticated attacker to compromise the integrity and confidentiality of affected systems, potentially leading to adverse consequences.
Technical Details of CVE-2021-21510
This section provides deeper insights into the technical aspects of CVE-2021-21510.
Vulnerability Description
The vulnerability involves a host header injection issue in Dell's Integrated Dell Remote Access Controller (iDRAC) versions less than 2.75.100.75.
Affected Systems and Versions
The vulnerability affects Dell iDRAC8 versions preceding 2.75.100.75.
Exploitation Mechanism
Remote unauthenticated attackers can exploit this vulnerability by injecting malicious 'Host' header values, potentially leading to web-cache poisoning or redirection manipulation.
Mitigation and Prevention
This section outlines the steps to mitigate and prevent exploitation of CVE-2021-21510.
Immediate Steps to Take
Users should promptly update affected systems to iDRAC8 version 2.75.100.75 or later and monitor for any unauthorized access or suspicious activities.
Long-Term Security Practices
Implementing stringent input validation checks, monitoring network traffic for anomalies, and maintaining up-to-date security protocols can enhance long-term security.
Patching and Updates
Regularly applying security patches, staying informed about security advisories, and conducting periodic security assessments are crucial to safeguarding against vulnerabilities like CVE-2021-21510.