CVE-2021-36400 : What You Need to Know
Gain insights into CVE-2021-36400, a vulnerability in Moodle allowing unauthorized removal of users' calendar URL subscriptions. Learn the impact, affected versions, and mitigation steps.
A detailed overview of CVE-2021-36400 highlighting the vulnerability found in Moodle related to insufficient capability checks for calendar URL subscriptions.
Understanding CVE-2021-36400
This section will provide insights into the nature and impact of the CVE-2021-36400 vulnerability.
What is CVE-2021-36400?
CVE-2021-36400 is a security vulnerability identified in Moodle that allowed for the unauthorized removal of other users' calendar URL subscriptions due to insufficient capability checks.
The Impact of CVE-2021-36400
The impact of this vulnerability could lead to unauthorized access and modification of calendar subscriptions of other Moodle users, potentially compromising the integrity of calendar data.
Technical Details of CVE-2021-36400
Explore the technical aspects of CVE-2021-36400 to understand the vulnerability better.
Vulnerability Description
The vulnerability arose from the lack of proper capability checks in Moodle, enabling users to delete calendar URL subscriptions belonging to other users.
Affected Systems and Versions
Moodle versions 3.11, 3.10 to 3.10.4, 3.9 to 3.9.7, and earlier unsupported versions are affected by CVE-2021-36400.
Exploitation Mechanism
Attackers with access to Moodle accounts could exploit this vulnerability to arbitrarily remove or modify calendar URL subscriptions of other users, potentially disrupting their scheduling activities.
Mitigation and Prevention
Learn about the steps to mitigate and prevent the CVE-2021-36400 vulnerability in Moodle.
Immediate Steps to Take
Users are advised to update their Moodle installations to the latest patched versions to address the vulnerability and enhance security.
Long-Term Security Practices
Enforce robust user access controls and regularly monitor calendar activities to detect and prevent any unauthorized modifications.
Patching and Updates
Stay informed about Moodle security updates and promptly apply patches released by the Moodle development team to safeguard against known vulnerabilities.