CVE-2017-5120

MEDIUM

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).

References

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

Details

Source: MITRE

Published: 2017-10-27

Updated: 2019-10-03

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 6.5

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

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM