Google Chrome before 42.0.2311.90 does not always ask the user before proceeding with CONTENT_SETTINGS_TYPE_FULLSCREEN and CONTENT_SETTINGS…

published 2015-04-19 11 y ago modified 2026-06-17 4 mo ago also EUVD-2015-3382

cvss: 4.3; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 73%
public exploits: 0; none known

Google Chrome before 42.0.2311.90 does not always ask the user before proceeding with CONTENT_SETTINGS_TYPE_FULLSCREEN and CONTENT_SETTINGS_TYPE_MOUSELOCK changes, which allows user-assisted remote attackers to cause a denial of service (UI disruption) by constructing a crafted HTML document containing JavaScript code with requestFullScreen and requestPointerLock calls, and arranging for the user to access this document with a file: URL.

Patch / fix

distros 1

chromium-browser Ubuntu 14.04 LTS 43.0.2357.81-0ubuntu0.14.04.1.1089

ubuntu advisories UBUNTU-CVE-2015-3336

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

Exploit prediction

1.46% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

code.google.com https://code.google.com/p/chromium/issues/detail?id=455953 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

CWE-264 Permissions, Privileges, and Access Controls

Technology feeds

Google Chrome rss critical rss

References

code.google.com /p/chromium/issues/detail?id=455953
exploit, vendor-advisory
debian.org /security/2015/dsa-3238
vendor-advisory, third-party-advisory
lists.opensuse.org /opensuse-updates/2015-04/msg00040.html
vendor-advisory, third-party-advisory
googlechromereleases.blogspot.com /2015/04/stable-channel-update_14.html
release-notes, vendor-advisory
securityfocus.com /bid/74227
vdb-entry, third-party-advisory

Sources

CVE List CVE-2015-3336
NVD CVE-2015-3336

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.

Summary