CVE-2020-12423
Published: 9 July 2020
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | this is a windows-specific issue |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
firefox Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
| eoan |
Not vulnerable
|
|
| focal |
Not vulnerable
|
|
| trusty |
Does not exist
|
|
| upstream |
Not vulnerable
(debian: Windows-specific)
|
|
| xenial |
Not vulnerable
|
|
|
thunderbird Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
| eoan |
Not vulnerable
|
|
| focal |
Not vulnerable
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |