Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Yubico | Yubikey 5 Nfc Firmware | >= 5.2.0, <= 5.2.6 |
| Yubico | Yubikey 5 Nfc | - |
References
- https://www.yubico.com/support/security-advisories/ysa-2020-05/MitigationVendor Advisory
- https://www.yubico.com/support/security-advisories/ysa-2020-05/MitigationVendor Advisory
FAQ
What is CVE-2020-15000?
CVE-2020-15000 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 ...
How severe is CVE-2020-15000?
CVE-2020-15000 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-15000?
Check the references section above for vendor advisories and patch information. Affected products include: Yubico Yubikey 5 Nfc Firmware, Yubico Yubikey 5 Nfc.