CVE-2019-19901 Information

Description

An issue was discovered in Backdrop CMS 1.13.x before 1.13.5 and 1.14.x before 1.14.2. It doesn’t sufficiently filter output when displaying certain block descriptions created by administrators. An attacker could potentially craft a specialized description then have an administrator execute scripting when configuring a layout aka XSS. This issue is mitigated by the fact that the attacker would be required to have the permission to create custom blocks which is typically an administrative task.

CVSS Vector

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

Reference

https://backdropcms.org/security/backdrop-sa-core-2019-013

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

4.8