CVE-2020-15001: Medium severity yubico yubikey 5c nfc firmware vulnerability
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.)
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID for this information leak on Yubico YubiKey 5 NFC devices?
The vulnerability ID for this information leak on Yubico YubiKey 5 NFC devices is CVE-2020-15001.
What is the severity of CVE-2020-15001?
The severity of CVE-2020-15001 is medium with a severity value of 5.3.
Which versions of Yubico YubiKey 5 NFC firmware are affected by CVE-2020-15001?
Yubico YubiKey 5 NFC firmware versions 5.0.0 to 5.2.6 and 5.3.0 to 5.3.1 are affected by CVE-2020-15001.
What is the purpose of the access code in the OTP application of Yubico YubiKey 5 NFC devices?
The access code in the OTP application of Yubico YubiKey 5 NFC devices is intended to prevent unauthorized changes to OTP configurations.
Is the access code checked when making changes to OTP configurations on Yubico YubiKey 5 NFC devices?
No, the access code is not checked when making changes to OTP configurations on Yubico YubiKey 5 NFC devices.