CVE-2024-9398

State: Published
Severity: 5.3 Medium
Published: Oct 1, 2024
Updated: Mar 18, 2025
Reserved: Oct 1, 2024

Description

By checking the result of calls to `window.open` with specifically set protocol handlers, an attacker could determine if the application which implements that protocol handler is installed. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	CISA-ADP

Weaknesses

CWE-203 Observable Discrepancy

Affected Products

Product	Versions
FirefoxMozilla	before 131Affected
Firefox ESRMozilla	before 128.3Affected
ThunderbirdMozilla	before 128.3Affected
ThunderbirdMozilla	before 131Affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1881037
https://www.mozilla.org/security/advisories/mfsa2024-46/
https://www.mozilla.org/security/advisories/mfsa2024-47/
https://www.mozilla.org/security/advisories/mfsa2024-49/
https://www.mozilla.org/security/advisories/mfsa2024-50/

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