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Published: 27 October 2017

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 3 base score: 6.5


Package Release Status
Launchpad, Ubuntu, Debian
Released (61.0.3163.79)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (61.0.3163.100-0ubuntu1.1378)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (61.0.3163.100-0ubuntu0.16.04.1306)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [61.0.3163.100-0ubuntu0.14.04.1202])
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(Ubuntu touch end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [Ubuntu touch end-of-life])