CVE-2024-8383
This vulnerability affects Firefox < 130, Firefox ESR < 128.2, and Firefox ESR < 115.15.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.64% probability · 49th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1188
- Affected
- mozilla/firefox · mozilla/firefox esr
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1908496Issue 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.