CVE-2020-12423

2020-07-0900:00:00

ubuntu.com

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:C/I:C/A:C

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.001

Percentile

49.8%

JSON

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.