Privilege escalation in Google Chrome

CVE-2018-18344

Inappropriate allowance of the setDownloadBehavior devtools protocol feature in Extensions in Google Chrome prior to 71.0.3578.80 allowed a remote attacker with control of an installed extension to access files on the local file system via a crafted Chrome Extension.

Vulnerability class: Privilege Escalation

EPSS: 0.015 (71.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-18344?
CVE-2018-18344 is a medium-severity vulnerability in Google Chrome, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2018-12-11.
How severe is CVE-2018-18344?
Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2018-18344 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.