CVE-2017-5120 Information

Description

Inappropriate use of www mismatch redirects in browser navigation in Google Chrome prior to 61.0.3163.79 for Mac Windows and Linux and 61.0.3163.81 for Android allowed a remote attacker to potentially downgrade HTTPS requests to HTTP via a crafted HTML page. In other words Chrome could transmit cleartext even though the user had entered an https URL because of a misdesigned workaround for cases where the domain name in a URL almost matches the domain name in an X.509 server certificate (but differs in the initial \www.\ substring).

CVSS Vector

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

Reference

http://www.debian.org/security/2017/dsa-3985 http://www.securityfocus.com/bid/100610 http://www.securitytracker.com/id/1039291 https://access.redhat.com/errata/RHSA-2017:2676 https://chromereleases.googleblog.com/2017/09/stable-channel-update-for-desktop.html https://crbug.com/718676 https://security.gentoo.org/glsa/201709-15

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

6.5