CVE-2016-2845 : The Content Security Policy (CSP) implementation in Blink, as used in Google Chr

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.

Published 2016-03-06 02:59:16

Updated 2016-12-03 03:26:07

Source Google Inc.

View at NVD, CVE.org

Vulnerability category: Information leak

Products affected by CVE-2016-2845

Google » Chrome
Versions up to, including, (<=) 48.0.2564.116
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2016-2845

EPSS FAQ

0.40%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 71 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2016-2845

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
5.3	MEDIUM	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	3.9	1.4	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: None Availability: None

CWE ids for CVE-2016-2845

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2016-2845

http://googlechromereleases.blogspot.com/2016/03/stable-channel-update.html

Chrome Releases: Stable Channel Update
Vendor Advisory

CVEs referencing this url
https://codereview.chromium.org/1454003003/

Issue 1454003003: [CSP] Don't check the path component of the URL when the response was fetched via ServiceWorker. - Code Review
http://homakov.blogspot.com/2014/01/using-content-security-policy-for-evil.html

Egor Homakov: Using Content-Security-Policy for Evil
https://code.google.com/p/chromium/issues/detail?id=591402

591402 - Tracking bug for internal fixes: Chrome M49, release 0 - chromium - Monorail

CVEs referencing this url
http://www.securitytracker.com/id/1035185

Google Chrome Multiple Bugs Let Remote Users Execute Arbitrary Code, Bypass Security Restrictions, and Obtain Potentially Sensitive Information - SecurityTracker

CVEs referencing this url
http://www.ubuntu.com/usn/USN-2920-1

USN-2920-1: Oxide vulnerabilities | Ubuntu security notices

CVEs referencing this url
http://www.securityfocus.com/bid/84168

Google Chrome CVE-2016-2845 Information Disclosure Vulnerability
https://bugs.chromium.org/p/chromium/issues/detail?id=542060

542060 - CSP for Evil & Service Workers - chromium - Monorail
Exploit

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Vulnerability Details : CVE-2016-2845

Products affected by CVE-2016-2845

Exploit prediction scoring system (EPSS) score for CVE-2016-2845

CVSS scores for CVE-2016-2845

CWE ids for CVE-2016-2845

References for CVE-2016-2845