CVE-2019-11762

Medium

Description

If two same-origin documents set document.domain differently to become cross-origin, it was possible for them to call arbitrary DOM methods/getters/setters on the now-cross-origin window. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

SeverityMedium

CVSS6.1

Exploit probability—

Product

Mozilla Firefox

PublishedJan 8, 2020

First seenJan 8, 2020

How to fix

Update

mozilla firefox70.0 or later
mozilla firefox_esr68.2 or later
mozilla thunderbird68.2 or later

Vendor advisories

security.gentoo.org/glsa/202003-10
usn.ubuntu.com/4335-1/

Affected products

Product	Affected versions	Fixed in
mozilla firefox	v < 70.0	70.0
mozilla firefox_esr	v < 68.2	68.2
mozilla thunderbird	v < 68.2	68.2
canonical ubuntu_linux	16.04	—

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