CVE-2024-8383

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1908496	Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2024-39/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-40/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-41/	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/09/msg00012.html
https://lists.debian.org/debian-lts-announce/2024/09/msg00025.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox::::::::
	cpe:2.3:a:mozilla:firefox_esr::::::::
	cpe:2.3:a:mozilla:firefox_esr::::::::

History

04 Nov 2025, 17:16

Type	Values Removed	Values Added
References		() https://lists.debian.org/debian-lts-announce/2024/09/msg00012.html - () https://lists.debian.org/debian-lts-announce/2024/09/msg00025.html -

Information

Published : 2024-09-03 13:15

Updated : 2025-11-04 17:16

NVD link : CVE-2024-8383

Mitre link : CVE-2024-8383

CVE.ORG link : CVE-2024-8383

JSON object : View

Products Affected

mozilla

firefox_esr
firefox

CWE

NVD-CWE-noinfo CWE-1188

Initialization of a Resource with an Insecure Default

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