CVE-2021-21577 : Vulnerability Insights and Analysis
Learn about CVE-2021-21577 affecting Dell iDRAC. Explore the impact, technical details, and mitigation steps. Update to iDRAC version 4.40.40.00 to secure systems.
Dell EMC iDRAC9 versions prior to 4.40.40.00 are affected by a DOM-based cross-site scripting vulnerability, allowing a remote attacker to execute malicious HTML or JavaScript in a victim's browser.
Understanding CVE-2021-21577
This CVE refers to a vulnerability in Integrated Dell Remote Access Controller (iDRAC) versions prior to 4.40.40.00, impacting Dell users worldwide.
What is CVE-2021-21577?
The vulnerability in Dell EMC iDRAC9 versions allows remote attackers to trigger Cross-Site Scripting (XSS) attacks by convincing users to click on a malicious link.
The Impact of CVE-2021-21577
With a CVSS base score of 6.1 (Medium severity), this vulnerability can lead to the execution of arbitrary code in the context of the user's browser, potentially compromising the confidentiality and integrity of sensitive data.
Technical Details of CVE-2021-21577
This section provides insights into the specific technical aspects of the CVE.
Vulnerability Description
The vulnerability stems from improper neutralization of input during web page generation, enabling threat actors to inject and execute malicious scripts within victims' browsers.
Affected Systems and Versions
Integrated Dell Remote Access Controller (iDRAC) versions before 4.40.40.00 are susceptible to this security flaw.
Exploitation Mechanism
By manipulating user interactions and enticing them to visit crafted malicious links, remote attackers can exploit this XSS vulnerability.
Mitigation and Prevention
To safeguard systems from CVE-2021-21577, prompt actions and long-term security practices are crucial.
Immediate Steps to Take
Users should update their iDRAC firmware to version 4.40.40.00 or above to eliminate the vulnerability. Additionally, avoid clicking on unverified links and practice caution while browsing.
Long-Term Security Practices
Regularly monitor security advisories from Dell and apply relevant security patches promptly to prevent similar vulnerabilities.
Patching and Updates
Stay informed about security updates and patches released by Dell for iDRAC to maintain system security and protect against evolving cyber threats.