CVE-2020-15001

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An information leak was discovered on Yubico YubiKey 5 NFC devices 5.0.0 to 5.2.6 and 5.3.0 to 5.3.1. The OTP application allows a user to set optional access codes on OTP slots. This access code is intended to prevent unauthorized changes to OTP configurations. The access code is not checked when updating NFC specific components of the OTP configurations. This may allow an attacker to access configured OTPs and passwords stored in slots that were not configured by the user to be read over NFC, despite a user having set an access code. (Users who have not set an access code, or who have not configured the OTP slots, are not impacted by this issue.)

Se detectó una fuga de información en los dispositivos Yubico YubiKey 5 NFC versiones 5.0.0 hasta 5.2.6 y 5.3.0 hasta 5.3.1. La aplicación OTP permite al usuario establecer códigos de acceso opcionales en los slots OTP. Este código de acceso está destinado a impedir cambios no autorizados en las configuraciones de OTP. El código de acceso no es comprobado al actualizar componentes específicos de NFC de las configuraciones de OTP. Esto puede permitir a un atacante acceder a las OTP configuradas y contraseñas almacenadas en slots que el usuario no configuró para que se lean a través de NFC, a pesar de que un usuario haya establecido un código de acceso. (Los usuarios que no han establecido un código de acceso, o que no han configurado las slots OTP, no están afectados por este problema)

*Credits: N/A

Attack Vector

Adjacent

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Adjacent

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-06-23 CVE Reserved
2020-07-09 CVE Published
2023-11-12 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-862: Missing Authorization

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://www.yubico.com/support/security-advisories/ysa-2020-04	2024-08-04

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Yubico Search vendor "Yubico"	Yubikey 5 Nfc Firmware Search vendor "Yubico" for product "Yubikey 5 Nfc Firmware"	>= 5.0.0 <= 5.2.6 Search vendor "Yubico" for product "Yubikey 5 Nfc Firmware" and version " >= 5.0.0 <= 5.2.6"	-	Affected	in	Yubico Search vendor "Yubico"	Yubikey 5 Nfc Search vendor "Yubico" for product "Yubikey 5 Nfc"	-	-	Safe
Yubico Search vendor "Yubico"	Yubikey 5 Nfc Firmware Search vendor "Yubico" for product "Yubikey 5 Nfc Firmware"	>= 5.3.0 <= 5.3.1 Search vendor "Yubico" for product "Yubikey 5 Nfc Firmware" and version " >= 5.3.0 <= 5.3.1"	-	Affected	in	Yubico Search vendor "Yubico"	Yubikey 5 Nfc Search vendor "Yubico" for product "Yubikey 5 Nfc"	-	-	Safe