CVE-2021-29349 : Exploit Details and Defense Strategies

This article provides details about CVE-2021-29349, a Cross Site Request Forgery (CSRF) vulnerability affecting Mahara 20.10 that allows remote attackers to delete inbox-mail on the server by bypassing CSRF token validation.

Understanding CVE-2021-29349

CVE-2021-29349 is a security vulnerability in Mahara 20.10 that enables malicious actors to manipulate inbox-mail content on the server.

What is CVE-2021-29349?

CVE-2021-29349 is a Cross Site Request Forgery (CSRF) flaw in Mahara 20.10, permitting unauthorized removal of messages from a mailbox due to inadequate CSRF token verification for POST requests.

The Impact of CVE-2021-29349

The vulnerability grants attackers the capability to delete all messages from a mailbox by exploiting the module/multirecipientnotification/inbox.php pieform_delete_all_notifications request.

Technical Details of CVE-2021-29349

CVE-2021-29349 involves a CSRF weakness in Mahara 20.10, enabling attackers to delete inbox-mail contents remotely.

Vulnerability Description

The flaw allows malicious individuals to remove all messages from the mailbox by crafting a specific request that bypasses CSRF token validation.

Affected Systems and Versions

This vulnerability affects Mahara 20.10 versions.

Exploitation Mechanism

An attacker can exploit this vulnerability by sending a crafted POST request to module/multirecipientnotification/inbox.php pieform_delete_all_notifications.

Mitigation and Prevention

To address CVE-2021-29349, consider the following steps:

Immediate Steps to Take

Update Mahara to a patched version.
Implement strict input validation mechanisms.

Long-Term Security Practices

Regularly monitor for security updates and patches.
Educate users on safe browsing practices.

Patching and Updates

Ensure timely application of security patches and updates to mitigate the risk posed by CVE-2021-29349.