CVE-2021-1629 : Exploit Details and Defense Strategies

Tableau Server fails to validate certain URLs that are embedded in emails sent to Tableau Server users.

Understanding CVE-2021-1629

This CVE affects Tableau Server versions on both Windows and Linux.

What is CVE-2021-1629?

Tableau Server does not properly validate URLs in emails sent to users, leading to a security vulnerability.

The Impact of CVE-2021-1629

This vulnerability could be exploited by attackers to perform open redirection attacks, potentially tricking users into visiting malicious websites.

Technical Details of CVE-2021-1629

Tableau Server versions affected are: 2019.4 through 2019.4.17, 2020.1 through 2020.1.13, 2020.2 through 2020.2.10, 2020.3 through 2020.3.6, and 2020.4 through 2020.4.2.

Vulnerability Description

Tableau Server fails to properly validate URLs embedded in emails, making it susceptible to open redirection attacks.

Affected Systems and Versions

Tableau Server versions 2019.4 through 2019.4.17, 2020.1 through 2020.1.13, 2020.2 through 2020.2.10, 2020.3 through 2020.3.6, and 2020.4 through 2020.4.2 on both Windows and Linux are affected.

Exploitation Mechanism

Attackers can abuse the lack of URL validation to craft emails with malicious links that redirect users to harmful sites.

Mitigation and Prevention

To mitigate the CVE-2021-1629 vulnerability:

Immediate Steps to Take

Users should be cautious of clicking on URLs in emails, especially if they seem suspicious or unexpected.

Long-Term Security Practices

Regular security awareness training for users can help prevent falling victim to phishing attacks.

Patching and Updates

Ensure Tableau Server is updated to versions that address the URL validation issue to prevent exploitation.