Security restrictions bypass in BookStack - CVE-2021-3874

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Main Vulnerability Database Vulnerabilities #VU57180

Security restrictions bypass in BookStack - CVE-2021-3874

Published: October 11, 2021 / Updated: November 5, 2021


Vulnerability identifier: #VU57180
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-3874
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
BookStack
Software vendor:
Dan Brown

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to application does not properly impose security restrictions on HTML export system. A remote authenticated user with permission to update or create pages can export content from files stored within the storage/</code> or <code>public/ directories (Such as application logs).


Remediation

Install updates from vendor's website.

External links