Check Point Advisories

BookStackApp BookStack Improper Access Control (CVE-2021-4119)

Check Point Reference: CPAI-2021-1271
Date Published: 4 Sep 2022
Severity: Critical
Last Updated: Sunday 04 September, 2022
Source:
Industry Reference:CVE-2021-4119
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? BookStackApp BookStack up to 21.11.2
Vulnerability Description An improper access control vulnerability exists in BookStackApp BookStack. Successful exploitation of this vulnerability could allow a remote attacker to read sensitive files on the affected system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

  1. In the IPS tab, click Protections and find the BookStackApp BookStack Improper Access Control (CVE-2021-4119) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Server Enforcement Violation.
Attack Information:  BookStackApp BookStack Improper Access Control (CVE-2021-4119)

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