CVE-2021-39250 Information

Description

Invision Community (aka IPS Community Suite or IP-Board) before 4.6.5.1 allows stored XSS with resultant code execution because an uploaded file can be placed in an IFRAME element within user-generated content. For code execution the attacker can rely on the ability of an admin to install widgets disclosure of the admin session ID in a Referer header and the ability of an admin to use the templating engine (e.g. Edit HTML).

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Reference

https://ssd-disclosure.com/ssd-advisory-ip-board-stored-xss-to-rce-chain/ https://invisioncommunity.com/release-notes/4651-r102/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

5.4