SB2021101103 - Information disclosure in BookStack
Published: October 11, 2021 Updated: November 5, 2021
Security Bulletin ID
SB2021101103
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Security restrictions bypass (CVE-ID: CVE-2021-3874)
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 update from vendor's website.