CVE Vulnerability

CVE-2020-5256

BookStack before version 0.25.5 has a vulnerability where a user could upload PHP files through image upload functions, which would allow them to execute code on the host system remotely. They would then have the permissions of the PHP process. This most impacts scenarios where non-trusted users are given permission to upload images in any area of the application. The issue was addressed in a series of patches in versions 0.25.3, 0.25.4 and 0.25.5. Users should upgrade to at least v0.25.5 to avoid this vulnerability.

9 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

8.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/BookStackApp/BookStack/security/advisories/GHSA-g9rq-x4fj-f5hx Third Party Advisory
https://github.com/BookStackApp/BookStack/releases/tag/v0.25.3 Release Notes
https://github.com/BookStackApp/BookStack/releases/tag/v0.25.5 Release Notes
https://github.com/BookStackApp/BookStack/releases/tag/v0.25.4 Release Notes
Configurations

Configuration 1

cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:*
Information

Published : 2020-03-09 04:15

Updated : 2020-03-10 01:34

NVD link : CVE-2020-5256

Mitre link : CVE-2020-5256

Products Affected
No products.
CWE
CWE-434