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CVE-2024-8383

7.5 · HIGH

Firefox normally asks for confirmation before asking the operating system to find an application to handle a scheme that the browser does not support.

Published Sep 3, 2024CWE-1188EPSS 0.64%

Overview

CVE-2024-8383 is a high-severity vulnerability. It was published on September 3, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Firefox normally asks for confirmation before asking the operating system to find an application to handle a scheme that the browser does not support. It did not ask before doing so for the Usenet-related schemes news: and snews:. Since most operating systems don't have a trusted newsreader installed by default, an unscrupulous program that the user downloaded could register itself as a handler. The website that served the application download could then launch that application at will. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, and Firefox ESR < 115.15.

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

Refbugzilla.mozilla.org/show_bug.cgi?id=1908496Refwww.mozilla.org/security/advisories/mfsa2024-39/Refwww.mozilla.org/security/advisories/mfsa2024-40/Refwww.mozilla.org/security/advisories/mfsa2024-41/Reflists.debian.org/debian-lts-announce/2024/09/msg00012.htmlReflists.debian.org/debian-lts-announce/2024/09/msg00025.html

How CyberStrike helps

Frequently asked questions

What is CVE-2024-8383?

CVE-2024-8383 is a high-severity vulnerability. It was published on September 3, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-8383?

This vulnerability has a CVSS 3.1 base score of 7.5, 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-2024-8383?

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-2024-8383?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-8383 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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