CVE-2018-6654 Information

Description

The Grammarly extension before 2018-02-02 for Chrome allows remote attackers to discover authentication tokens via an ‘action: \user' request to iframe.gr_-ifr because the exposure of these tokens is not restricted to any specific web site.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://bugs.chromium.org/p/project-zero/issues/detail?id=1527

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8