CVE-2019-11762

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.40%
Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox ESR
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2019-35/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-33/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2019-34/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1582857 issue tracking permissions required
https://security.gentoo.org/glsa/202003-10 vendor advisory third party advisory
https://usn.ubuntu.com/4335-1/ vendor advisory third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-11762?
CVE-2019-11762 has been scored as a medium severity vulnerability.
How to fix CVE-2019-11762?
To fix CVE-2019-11762, 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-2019-11762 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-11762 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-11762?
CVE-2019-11762 affects Mozilla Firefox, Mozilla Thunderbird, Mozilla Firefox ESR.
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