CVE-2020-15000
Last modified
CVE-2020-15000 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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. EPSS estimates a 0.70% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Yubico | Yubikey 5 Nfc Firmware | >= 5.2.0, <= 5.2.6 |
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
Timeline
- Published
- Last Modified
- Status
- Modified
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