CVEvulnerability
CVE-2020-10185
8.6 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-03-05
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
- CVSS 2.0 ([email protected])
- 6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-294
Description
The sync endpoint in YubiKey Validation Server before 2.40 allows remote attackers to replay an OTP. NOTE: this issue is potentially relevant to persons outside Yubico who operate a self-hosted OTP validation service with a non-default configuration such as an open sync pool; the issue does NOT affect YubiCloud.
Affected configurations
• yubico yubikey one time password validation server (< 2.40)
Related
Weakness · CWE (1)
- CWE-294 Authentication Bypass by Capture-replay weakness
References
- https://github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40 Release Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00014.html lists.debian.org
- https://www.yubico.com/support/security-advisories/ysa-2020-01/ Exploit, Vendor Advisory
- https://github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40 Release Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00014.html lists.debian.org
- https://www.yubico.com/support/security-advisories/ysa-2020-01/ Exploit, Vendor Advisory