CVE-2021-20813 : Security Advisory and Response
Learn about CVE-2021-20813, a cross-site scripting vulnerability in Movable Type versions 7 r.4903 and earlier. Find out its impact, affected systems, and mitigation steps.
A detailed analysis of CVE-2021-20813, a cross-site scripting vulnerability in Movable Type that affects certain versions of the software.
Understanding CVE-2021-20813
This section will cover the key aspects of the CVE-2021-20813 vulnerability.
What is CVE-2021-20813?
CVE-2021-20813 refers to a cross-site scripting vulnerability found in the Edit screen of Content Data of Movable Type software versions 7 r.4903 and earlier, allowing remote attackers to inject arbitrary scripts or HTML through unspecified vectors.
The Impact of CVE-2021-20813
This vulnerability could lead to unauthorized access, data theft, and potential manipulation of content for users of affected Movable Type versions.
Technical Details of CVE-2021-20813
Delve into the technicalities of CVE-2021-20813 to understand its nature and scope.
Vulnerability Description
The vulnerability exists in the Edit screen of Content Data of Movable Type, enabling attackers to inject malicious scripts or HTML code remotely.
Affected Systems and Versions
The impacted versions include Movable Type 7 r.4903 and earlier (Movable Type 7 Series) and Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series).
Exploitation Mechanism
Remote attackers can exploit this vulnerability via unspecified methods, gaining the ability to execute arbitrary code within the application environment.
Mitigation and Prevention
Explore the steps to mitigate the risks associated with CVE-2021-20813 and prevent potential security threats.
Immediate Steps to Take
Users should update their Movable Type installations to the latest secure version, implementing patches provided by the vendor.
Long-Term Security Practices
Regular security audits, user input validation, and secure coding practices can help prevent cross-site scripting vulnerabilities in web applications.
Patching and Updates
Stay vigilant for security advisories from Six Apart Ltd. and apply patches promptly to safeguard against known vulnerabilities.