Description
The CSPSource::schemeMatches function in WebKit/Source/core/frame/csp/CSPSource.cpp in the Content Security Policy (CSP) implementation in Blink, as used in Google Chrome before 48.0.2564.82, does not apply http policies to https URLs and does not apply ws policies to wss URLs, which makes it easier for remote attackers to determine whether a specific HSTS web site has been visited by reading a CSP report.
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 | 48.0.2564.82-1~deb8u1 | DSA-3456-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | chromium-browser | 48.0.2564.82-0ubuntu0.14.04.1.1108 | — |
| Ubuntu 14.04 LTS | oxide-qt | 1.12.5-0ubuntu0.14.04.1 | USN-2877-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | chromium-browser | 48.0.2564.82-1.el6 | RHSA-2016:0072 |
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-2016:0072 Red Hat Security Advisory: chromium-browser security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-3456-1 chromium-browser - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2877-1 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
- 81430 vdb-entry
- RHSA-2016:0072 vendor-advisory
- https://codereview.chromium.org/1455973003
- USN-2877-1 vendor-advisory
- http://googlechromereleases.blogspot.com/2016/01/stable-channel-update_20.html
- 1034801 vdb-entry
- openSUSE-SU-2016:0249 vendor-advisory
- GLSA-201603-09 vendor-advisory
- openSUSE-SU-2016:0271 vendor-advisory
- DSA-3456 vendor-advisory
- openSUSE-SU-2016:0250 vendor-advisory
- https://code.google.com/p/chromium/issues/detail?id=544765