Vulnerability CVE-2017-5120
Published: 2017-10-27

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).

Type:

CWE-noinfo

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Google -> Chrome 
Debian -> Debian linux 

 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
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