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CVE-2019-11711

8.8 · HIGH

When an inner window is reused, it does not consider the use of document.domain for cross-origin protections.

Published Jul 23, 2019EPSS 1.63%

Overview

CVE-2019-11711 is a high-severity vulnerability. It was published on July 23, 2019 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

When an inner window is reused, it does not consider the use of document.domain for cross-origin protections. If pages on different subdomains ever cooperatively use document.domain, then either page can abuse this to inject script into arbitrary pages on the other subdomain, even those that did not use document.domain to relax their origin security. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Reflists.opensuse.org/opensuse-security-announce/2019-07/msg00055.htmlReflists.opensuse.org/opensuse-security-announce/2019-07/msg00058.htmlReflists.opensuse.org/opensuse-security-announce/2019-08/msg00073.htmlReflists.opensuse.org/opensuse-security-announce/2019-10/msg00009.htmlReflists.opensuse.org/opensuse-security-announce/2019-10/msg00010.htmlRefbugzilla.mozilla.org/show_bug.cgi?id=1552541Reflists.debian.org/debian-lts-announce/2019/08/msg00001.htmlReflists.debian.org/debian-lts-announce/2019/08/msg00002.htmlRefsecurity.gentoo.org/glsa/201908-12Refsecurity.gentoo.org/glsa/201908-20

How CyberStrike helps

Frequently asked questions

What is CVE-2019-11711?

CVE-2019-11711 is a high-severity vulnerability. It was published on July 23, 2019 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2019-11711?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2019-11711?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2019-11711?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2019-11711 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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