CVE-2024-8383
7.5
HIGH
CVSS 3.1
EPSS 0.22%
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.
How to fix CVE-2024-8383
To remediate CVE-2024-8383, upgrade the affected package to a fixed version below.
- —upgrade to 115.15.0esr-1~deb11u1 or later
- —upgrade to 1:115.15.0-1~deb11u1 or later
Is CVE-2024-8383 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 115.15.0esr-1~deb11u1
- from 0, < 1:115.15.0-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |