CVE-2021-20281 Explained : Impact and Mitigation
Learn about CVE-2021-20281, a vulnerability in Moodle allowing unauthorized users to view others' full names. Know the impact, affected versions, and mitigation steps.
This article provides an overview of CVE-2021-20281, a vulnerability that allowed unauthorized users to view other users' full names in Moodle before versions 3.10.2, 3.9.5, 3.8.8, and 3.5.17.
Understanding CVE-2021-20281
CVE-2021-20281 is a security vulnerability in Moodle that enabled certain users without proper permissions to access and view the complete names of other users through the online users block before the specified patched versions.
What is CVE-2021-20281?
CVE-2021-20281 describes a flaw in Moodle that could be exploited by unauthorized individuals to see the full names of other users via the online users block.
The Impact of CVE-2021-20281
This vulnerability could lead to a breach of user privacy and confidentiality, allowing unauthorized access to sensitive information within the Moodle platform.
Technical Details of CVE-2021-20281
CVE-2021-20281's technical details include information on the vulnerability, affected systems and versions, as well as the exploitation mechanism.
Vulnerability Description
The flaw in moodle allowed unauthorized users to view other users' full names via the online users block before versions 3.10.2, 3.9.5, 3.8.8, and 3.5.17.
Affected Systems and Versions
Moodle versions prior to 3.10.2, 3.9.5, 3.8.8, and 3.5.17 were impacted by this vulnerability, exposing user information to unauthorized individuals.
Exploitation Mechanism
Unauthorized users could exploit this vulnerability through the online users block feature in Moodle to access and view the full names of other users.
Mitigation and Prevention
To address CVE-2021-20281, immediate steps need to be taken along with long-term security practices and regular patching and updates.
Immediate Steps to Take
Ensure that Moodle is updated to version 3.10.2, 3.9.5, 3.8.8, or 3.5.17 to prevent unauthorized access to user information.
Long-Term Security Practices
Implement strict user permission settings and conduct regular security audits to maintain data privacy within the Moodle environment.
Patching and Updates
Frequently check for Moodle updates and security advisories to apply patches promptly and safeguard against potential vulnerabilities.