SB2020070924 - Improper access control in Yubico YubiKey 5 NFC

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2020070924

SB2020070924 - Improper access control in Yubico YubiKey 5 NFC

Published: July 9, 2020 Updated: July 9, 2020

Security Bulletin ID SB2020070924
CSH Severity
Low
Patch available
NO
Number of vulnerabilities 1
Exploitation vector Physical access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper access control (CVE-ID: CVE-2020-15001)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear


The vulnerability allows a local attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to the access code is not checked when updating NFC-specific components of the OTP configurations. An attacker with physical can bypass implemented security restrictions and perform possible changes to the NDEF prefix as well as which slot is presented over NFC without an access code check.

Note: This vulnerability affects the following versions of YubiKey 5 NFC:

  • 5.0.0 to 5.2.6
  • 5.3.0 to 5.3.1


Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References