Description
The Content Security Policy (CSP) implementation in Blink, as used in Google Chrome before 49.0.2623.75, does not ignore a URL's path component in the case of a ServiceWorker fetch, which allows remote attackers to obtain sensitive information about visited web pages by reading CSP violation reports, related to FrameFetchContext.cpp and ResourceFetcher.cpp.
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 | 49.0.2623.75-1~deb8u1 | DSA-3507-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | chromium-browser | 49.0.2623.87-0ubuntu0.14.04.1.1112 | — |
| Ubuntu 14.04 LTS | oxide-qt | 1.13.6-0ubuntu0.14.04.1 | USN-2920-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | chromium-browser | 49.0.2623.75-1.el6 | RHSA-2016:0359 |
Advisories 3
- RHSA-2016:0359 Red Hat Security Advisory: chromium-browser security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-2920-1 oxide-qt vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3507-1 chromium-browser - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://codereview.chromium.org/1454003003/
- 1035185 vdb-entry
- https://code.google.com/p/chromium/issues/detail?id=591402
- https://bugs.chromium.org/p/chromium/issues/detail?id=542060
- http://homakov.blogspot.com/2014/01/using-content-security-policy-for-evil.html
- 84168 vdb-entry
- USN-2920-1 vendor-advisory
- http://googlechromereleases.blogspot.com/2016/03/stable-channel-update.html