CVE-2018-6654 — HIGH (8.8) — White Hats Nepal

Vulnerability 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 Score

8.8

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Grammarly	Grammarly	2018-02-02

Related Weaknesses (CWE)

CWE-346

References

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

FAQ

What is CVE-2018-6654?

CVE-2018-6654 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 i...

How severe is CVE-2018-6654?

CVE-2018-6654 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-6654?

Check the references section above for vendor advisories and patch information. Affected products include: Grammarly Grammarly.