Insufficient enforcement of Content Security Policy in Blink in Google Chrome prior to 62.0.3202.62 allowed a remote attacker to open javascript: URL windows when they should not be allowed to via a crafted HTML page.
https://www.debian.org/security/2017/dsa-4020
https://security.gentoo.org/glsa/201710-24
https://chromereleases.googleblog.com/2017/10/stable-channel-update-for-desktop.html