CVE-2016-2845 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Reference

http://googlechromereleases.blogspot.com/2016/03/stable-channel-update.html http://homakov.blogspot.com/2014/01/using-content-security-policy-for-evil.html http://www.securityfocus.com/bid/84168 http://www.securitytracker.com/id/1035185 http://www.ubuntu.com/usn/USN-2920-1 https://bugs.chromium.org/p/chromium/issues/detail?id=542060 https://code.google.com/p/chromium/issues/detail?id=591402 https://codereview.chromium.org/1454003003/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

5.3