CVE-2019-11737 Security feature bypass in Firefox

What is CVE-2019-11737?

CVE-2019-11737 is a medium-severity vulnerability in Mozilla Firefox, published on 27 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

If a wildcard ('*') is specified for the host in Content Security Policy (CSP) directives, any port or path restriction of the directive will be ignored, leading to CSP directives not being properly applied to content. This vulnerability affects Firefox < 69.

Weakness: CWE-345

Which versions are affected by CVE-2019-11737?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2019-11737?

Upgrade to a fixed version.

Is CVE-2019-11737 being exploited?

There is no known exploitation of CVE-2019-11737 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-fmq6-m827-77jc, UBUNTU-CVE-2019-11737.