CVE-2021-36543 : Security Advisory and Response

A Cross-Site Request Forgery (CSRF) vulnerability in SeedDMS v5.1.x <5.1.23 and v6.0.x <6.0.16 allows remote attackers to unlock any document without the victim's knowledge.

Understanding CVE-2021-36543

This CVE involves a security flaw in SeedDMS that enables attackers to manipulate document unlocking without user consent.

What is CVE-2021-36543?

The vulnerability in SeedDMS versions 5.1.x <5.1.23 and 6.0.x <6.0.16 permits unauthorized unlocking of documents via CSRF attacks.

The Impact of CVE-2021-36543

By exploiting this vulnerability, a malicious actor can trick authenticated users into unintentionally unlocking sensitive documents.

Technical Details of CVE-2021-36543

The following sections outline specific technical details of this security flaw.

Vulnerability Description

The CSRF vulnerability in /op/op.UnlockDocument.php in SeedDMS allows attackers to unlock documents without user acknowledgment.

Affected Systems and Versions

All instances running SeedDMS v5.1.x <5.1.23 and v6.0.x <6.0.16 are susceptible to this security issue.

Exploitation Mechanism

Attackers can exploit this vulnerability by luring authenticated users to visit a specially crafted webpage.

Mitigation and Prevention

Below are key steps to mitigate and prevent exploitation of CVE-2021-36543.

Immediate Steps to Take

Users should update SeedDMS to versions 5.1.23 and 6.0.16 or newer to eliminate this vulnerability.

Long-Term Security Practices

Implementing CSRF protection mechanisms and security best practices helps enhance system resilience against similar attacks.

Patching and Updates

Regularly applying security patches and updates offered by SeedDMS helps fortify the system against known vulnerabilities.