CVE-2020-12423

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Cuando la DLL "webauthn.dll" de Windows estaba faltando desde el Sistema Operativo y se colocaba una maliciosa en una carpeta en la %PATH% de usuario, Firefox pudo haber cargado la DLL, conllevando a una ejecución de código arbitrario. *Nota: este problema solo afecta al sistema operativo Windows; otros sistemas operativos no están afectados. * Esta vulnerabilidad afecta a Firefox versiones anteriores a 78

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-04-28 CVE Reserved
2020-07-09 CVE Published
2024-05-13 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-427: Uncontrolled Search Path Element

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html	2023-01-30
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html	2023-01-30
https://bugzilla.mozilla.org/show_bug.cgi?id=1642400	2023-01-30
https://www.mozilla.org/security/advisories/mfsa2020-24	2023-01-30

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"	Firefox Search vendor "Mozilla" for product "Firefox"	< 78.0 Search vendor "Mozilla" for product "Firefox" and version " < 78.0"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	-	-	Safe