CVE-2017-5120

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).

6.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.87% Top 30%

Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory debian.org

Affected: n/a Google Chrome prior to 61.0.3163.79 for Mac, Windows and Linux, and 61.0.3163.81 for Android

References

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

Frequently Asked Questions

What is the severity of CVE-2017-5120?: CVE-2017-5120 has been scored as a medium severity vulnerability.
How to fix CVE-2017-5120?: To fix CVE-2017-5120, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-5120 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2017-5120 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-5120?: CVE-2017-5120 affects n/a Google Chrome prior to 61.0.3163.79 for Mac, Windows and Linux, and 61.0.3163.81 for Android.

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