Description
When the Windows DLL "webauthn.dll" was missing from the Operating System, and a malicious one was placed in a folder in the user's %PATH%, Firefox may have loaded the DLL, leading to arbitrary code execution. *Note: This issue only affects the Windows operating system; other operating systems are unaffected.* This vulnerability affects Firefox < 78.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | >= unspecified, < 78 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.htmlBroken Link
- https://bugzilla.mozilla.org/show_bug.cgi?id=1642400Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-24/Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.htmlBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.htmlBroken Link
- https://bugzilla.mozilla.org/show_bug.cgi?id=1642400Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-24/Vendor Advisory
Timeline
- Published
- Jul 9, 2020
- Last modified
- Jun 17, 2026
- NVD status
- Modified