CVE-2021-20810 : What You Need to Know
Learn about CVE-2021-20810, a Cross-site scripting vulnerability in Website Management screen of Movable Type allowing remote attackers to inject arbitrary script or HTML. Find out how to mitigate the risk.
A Cross-site scripting vulnerability in the Website Management screen of Movable Type versions allows remote attackers to inject arbitrary script or HTML. This CVE affects Movable Type versions 7 r.4903 and earlier, 6.8.0 and earlier, Advanced 7 r.4903 and earlier, Premium 1.44 and earlier, and Premium Advanced 1.44 and earlier.
Understanding CVE-2021-20810
This section will cover what CVE-2021-20810 is and its impact on systems.
What is CVE-2021-20810?
CVE-2021-20810 refers to a Cross-site scripting vulnerability in the Website Management screen of Movable Type software, allowing remote attackers to execute malicious scripts.
The Impact of CVE-2021-20810
The vulnerability can be exploited by attackers to inject arbitrary script or HTML into the system, potentially leading to unauthorized access and data theft.
Technical Details of CVE-2021-20810
This section will delve into the technical aspects of the CVE.
Vulnerability Description
The vulnerability allows malicious actors to execute arbitrary script or HTML code through the Website Management screen, posing a significant security risk.
Affected Systems and Versions
Movable Type versions 7 r.4903 and earlier, 6.8.0 and earlier, Advanced 7 r.4903 and earlier, Premium 1.44 and earlier, and Premium Advanced 1.44 and earlier are impacted by this vulnerability.
Exploitation Mechanism
The exploit involves injecting malicious scripts or HTML through unspecified vectors, enabling attackers to compromise the system.
Mitigation and Prevention
This section will outline steps to mitigate and prevent the exploitation of CVE-2021-20810.
Immediate Steps to Take
Users are advised to update Movable Type to the latest patched version to mitigate the vulnerability. Additionally, input validation and sanitization can help prevent unauthorized script injections.
Long-Term Security Practices
Implementing secure coding practices, conducting regular security audits, and staying informed about software updates are crucial for long-term security.
Patching and Updates
Regularly applying security patches released by the software vendor is essential to protect systems from known vulnerabilities.