// For flags

CVE-2020-15000

 

Severity Score

5.9
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A PIN management problem was discovered on Yubico YubiKey 5 devices 5.2.0 to 5.2.6. OpenPGP has three passwords: Admin PIN, Reset Code, and User PIN. The Reset Code is used to reset the User PIN, but it is disabled by default. A flaw in the implementation of OpenPGP sets the Reset Code to a known value upon initialization. If the retry counter for the Reset Code is set to non-zero without changing the Reset Code, this known value can be used to reset the User PIN. To set the retry counters, the Admin PIN is required.

Se detectó un problema de administración de PIN en los dispositivos Yubico YubiKey versiones 5 5.2.0 hasta 5.2.6. OpenPGP tiene tres contraseñas: el PIN de administrador, el Código de Restablecimiento y el PIN de usuario. El código de restablecimiento se usa para restablecer el PIN de usuario, pero está deshabilitado por defecto. Un fallo en la implementación de OpenPGP establece el código de restablecimiento en un valor conocido tras la inicialización. Si el contador de reintentos para el Código de Reinicio se establece en un valor distinto de cero sin cambiar el Código de Reinicio, este valor conocido se puede usar para reiniciar el PIN del usuario. Para configurar los contadores de reintento, es requerido el PIN de administrador

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
Partial
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
  • 2023-03-25 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
References (1)
URL Tag Source
URL Date SRC
URL Date SRC
URL Date SRC
https://www.yubico.com/support/security-advisories/ysa-2020-05 2020-07-21
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"
 >= 5.2.0 <= 5.2.6
Search vendor "Yubico" for product "Yubikey 5 Nfc Firmware" and version " >= 5.2.0 <= 5.2.6"
-
Affected
in Yubico
Search vendor "Yubico"
 Yubikey 5 Nfc
Search vendor "Yubico" for product "Yubikey 5 Nfc"
--
Safe