CVE-2020-26171 Explained : Impact and Mitigation

In tangro Business Workflow before 1.18.1, users can manipulate the documentId of attachment uploads, allowing them to add attachments to workitems not assigned to them.

Understanding CVE-2020-26171

This CVE involves a vulnerability in tangro Business Workflow that enables unauthorized users to add attachments to workitems.

What is CVE-2020-26171?

The vulnerability in tangro Business Workflow allows users to manipulate attachment uploads, potentially adding attachments to workitems they are not authorized to access.

The Impact of CVE-2020-26171

The impact of this vulnerability is rated as MEDIUM with a CVSS base score of 4.3. It has a low attack complexity and requires low privileges to exploit.

Technical Details of CVE-2020-26171

This section provides more technical insights into the CVE.

Vulnerability Description

The documentId of attachment uploads to /api/document/attachments/upload in tangro Business Workflow before version 1.18.1 can be manipulated, enabling unauthorized attachment additions.

Affected Systems and Versions

Affected Version: tangro Business Workflow before 1.18.1

Exploitation Mechanism

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None

Mitigation and Prevention

Protecting systems from CVE-2020-26171 is crucial to prevent unauthorized access and data breaches.

Immediate Steps to Take

Update tangro Business Workflow to version 1.18.1 or newer.
Monitor attachment uploads for suspicious activities.

Long-Term Security Practices

Regularly review and update access controls.
Conduct security training to educate users on safe attachment practices.

Patching and Updates

Apply security patches promptly to address known vulnerabilities.