Description:

CVE-2024-1439 is a vulnerability in Moodle LMS that allows a local user with a student role to create arbitrary events intended for users with higher roles. It also enables the attacker to add events to the calendar of all users without their consent. The SVRS for this CVE is 42, indicating a moderate risk level.

Key Insights:

1. Inadequate Access Control: This vulnerability stems from inadequate access control mechanisms in Moodle LMS, allowing unauthorized users to perform actions beyond their assigned privileges. This could lead to sensitive information disclosure, calendar manipulation, and potential impersonation attacks.

2. Local User Exploitation: The vulnerability can be exploited by a local user with a student role, highlighting the importance of implementing robust access controls and authorization mechanisms to prevent unauthorized access and privilege escalation.

3. Calendar Manipulation: The attacker can create arbitrary events and add them to the calendar of all users without their consent. This could disrupt normal operations, lead to confusion, and potentially compromise sensitive information if the events contain malicious content or links.

Mitigation Strategies:

1. Update Moodle LMS: The most effective mitigation strategy is to update Moodle LMS to the latest version, which likely includes a fix for this vulnerability. System administrators should prioritize patching vulnerable systems promptly.

2. Implement Strong Access Controls: Organizations should implement strong access controls to restrict unauthorized access to sensitive information and resources. This includes enforcing role-based access control (RBAC), implementing multi-factor authentication (MFA), and regularly reviewing user permissions.

3. Educate Users: Educate users about the importance of cybersecurity and encourage them to report any suspicious activity or unauthorized access attempts. Users should also be cautious when clicking on links or opening attachments from unknown sources.

Additional Information:

• Threat Actors/APT Groups: There is no information available regarding specific threat actors or APT groups actively exploiting this vulnerability.

• Exploit Status: Active exploits have not been published at this time.

• CISA Warnings: The Cybersecurity and Infrastructure Security Agency (CISA) has not issued a warning for this vulnerability.

• In the Wild: There is no evidence that this vulnerability is actively exploited by hackers.

If users have additional queries regarding this incident, they can use the 'Ask to Analyst' feature, contact SOCRadar directly, or open a support ticket for more information if necessary.