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Fencer Intel
high 8.8

CVE-2018-6140 json

Allowing the chrome.debugger API to attach to Web UI pages in DevTools in Google Chrome prior to 67.0.3396.62 allowed an attacker who convi…

published 7y ago modified 4mo ago also EUVD-2018-17903

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.6%
EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

Allowing the chrome.debugger API to attach to Web UI pages in DevTools in Google Chrome prior to 67.0.3396.62 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code via a crafted Chrome Extension.

Patch / fix

  • Google Chrome 67.0.3396.62
  • chromium-browser Ubuntu 16.04 LTS 67.0.3396.99-0ubuntu0.16.04.2
  • chromium-browser Ubuntu 18.04 LTS 67.0.3396.99-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2018-6140

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • chromium-browser RHEL 6 EXTRAS 67.0.3396.62-2.el6_9

red hat advisories RHSA-2018:1815

  • chromium openSUSE Tumbleweed 93.0.4577.82-1.1
  • chromium openSUSE Tumbleweed 113.0.5672.92-1.1

opensuse advisories openSUSE-SU-2024:10681-1openSUSE-SU-2024:12948-1

Is CVE-2018-6140 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-6140 updated cvss 6.5

chromium-browser: Restrictions bypass in the debugger extension API

  • Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser 67.0.3396.62-2.el6_9 Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser 67.0.3396.62-2.el6_9 Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser 67.0.3396.62-2.el6_9
    fixed: vendor fix RHSA-2018:1815

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.64% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • Google Chrome

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.