Information disclosure in Google Chrome

CVE-2016-5137

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 52.0.2743.82, does not apply http :80 policies to https :443 URLs and does not apply ws :80 policies to wss :443 URLs, which makes it easier for remote attackers to determine whether a specific HSTS web site has been visited by reading a CSP report. NOTE: this vulnerability is associated with a specification change after CVE-2016-1617 resolution.

Vulnerability class: Information Disclosure

EPSS: 0.013 (67.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2016-5137?
CVE-2016-5137 is a medium-severity vulnerability in Google Chrome, classified under Information Disclosure. CVSS score: 4.3/10. Published 2016-07-23.
How severe is CVE-2016-5137?
Medium severity. CVSS v3 base score is 4.3 out of 10.