CVE-2020-15000
A PIN management problem was discovered on Yubico YubiKey 5 devices 5.2.0 to 5.2.6.
Does this matter?
Lower severity and a low EPSS score (0.70%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.70% probability · 51th percentile
- CISA KEV
- Not listed
- Affected
- yubico/yubikey 5 nfc firmware
- Source
- cve@mitre.org
References
- https://www.yubico.com/support/security-advisories/ysa-2020-05/Mitigation, Vendor Advisory
- https://www.yubico.com/support/security-advisories/ysa-2020-05/Mitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.