Vulnerability Details : CVE-2015-6785
The CSPSource::hostMatches function in WebKit/Source/core/frame/csp/CSPSource.cpp in the Content Security Policy (CSP) implementation in Google Chrome before 47.0.2526.73 accepts an x.y hostname as a match for a *.x.y pattern, which might allow remote attackers to bypass intended access restrictions in opportunistic circumstances by leveraging a policy that was intended to be specific to subdomains.
Exploit prediction scoring system (EPSS) score for CVE-2015-6785
Probability of exploitation activity in the next 30 days: 0.40%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 70 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2015-6785
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST |
CWE ids for CVE-2015-6785
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Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-6785
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http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00017.html
[security-announce] openSUSE-SU-2015:2291-1: important: Security update
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http://www.securityfocus.com/bid/78416
Google Chrome Prior to 47.0.2526.73 Multiple Security Vulnerabilities
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http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00016.html
[security-announce] openSUSE-SU-2015:2290-1: important: Security update
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https://code.google.com/p/chromium/issues/detail?id=534542
534542 - CSP: `*.x.y` must match a host that ends with `.x.y` (4.2.2 step 4.6) - chromium - Monorail
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http://googlechromereleases.blogspot.com/2015/12/stable-channel-update.html
Chrome Releases: Stable Channel UpdateVendor Advisory
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http://www.ubuntu.com/usn/USN-2825-1
USN-2825-1: Oxide vulnerabilities | Ubuntu security notices
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https://security.gentoo.org/glsa/201603-09
Chromium: Multiple vulnerabilities (GLSA 201603-09) — Gentoo security
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https://codereview.chromium.org/1367933003
Issue 1367933003: CSP source *.x.y should not match host x.y - Code Review
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http://www.securitytracker.com/id/1034298
Google Chrome Multiple Bugs Let Remote Users Execute Arbitrary Code, Bypass Security Restrictions, and Spoof Content - SecurityTracker
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http://www.debian.org/security/2015/dsa-3415
Debian -- Security Information -- DSA-3415-1 chromium-browser
Products affected by CVE-2015-6785
- cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*