Description
The CSPSource::hostMatches function in WebKit/Source/core/frame/csp/CSPSource.cpp in the Content Security Policy (CSP) implementation in Google Chrome before 47.0.2526.73 accepts an x.y hostname as a match for a *.x.y pattern, which might allow remote attackers to bypass intended access restrictions in opportunistic circumstances by leveraging a policy that was intended to be specific to subdomains.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | chromium-browser | 47.0.2526.73-1~deb8u1 | DSA-3415-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | chromium-browser | 47.0.2526.73-0ubuntu0.14.04.1.1106 | — |
| Ubuntu 14.04 LTS | oxide-qt | 1.11.3-0ubuntu0.14.04.1 | USN-2825-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | chromium-browser | 47.0.2526.73-1.el6 | RHSA-2015:2545 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | chromium | 55.0.2883.75-3.1 | openSUSE-SU-2024:12948-1, openSUSE-SU-2024:10171-1 |
Advisories 5
- RHSA-2015:2545 Red Hat Security Advisory: chromium-browser security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-3415-1 chromium-browser - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2825-1 oxide-qt vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2024:10171-1 chromedriver-55.0.2883.75-3.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12948-1 ungoogled-chromium-113.0.5672.92-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- http://googlechromereleases.blogspot.com/2015/12/stable-channel-update.html
- USN-2825-1 vendor-advisory
- openSUSE-SU-2015:2290 vendor-advisory
- GLSA-201603-09 vendor-advisory
- https://codereview.chromium.org/1367933003
- 78416 vdb-entry
- DSA-3415 vendor-advisory
- https://code.google.com/p/chromium/issues/detail?id=534542
- openSUSE-SU-2015:2291 vendor-advisory
- 1034298 vdb-entry