Vulnerability Details : CVE-2018-6654
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.
Products affected by CVE-2018-6654
- cpe:2.3:a:grammarly:grammarly:2018-02-02:*:*:*:*:chrome:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-6654
0.44%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 75 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-6654
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2018-6654
-
The product does not properly verify that the source of data or communication is valid.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-6654
-
https://bugs.chromium.org/p/project-zero/issues/detail?id=1527
1527 - Grammarly: auth tokens are accessible to all websites - project-zero - MonorailExploit;Issue Tracking;Third Party Advisory
Jump to