Replay Vulnerability in YubiKey Validation Server By Yubico
CVE-2020-10185

8.6HIGH

Key Information:

Vendor

Yubico

Status
Yubikey One Time Password Validation Server
Vendor
CVE Published:
5 March 2020

What is CVE-2020-10185?

The synchronization endpoint in YubiKey Validation Server prior to version 2.40 enables remote attackers to execute replay attacks on one-time passwords (OTPs). This vulnerability could affect self-hosted OTP validation services with specific configurations, such as those using an open sync pool. However, it does not impact YubiCloud, which maintains its security integrity. Users of affected versions are advised to upgrade to version 2.40 or later to mitigate potential risks.

References

https://www.yubico.com/support/security-advisories/ysa-20...
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https://github.com/Yubico/yubikey-val/releases/tag/yubike...
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https://lists.debian.org/debian-lts-announce/2020/03/msg0...
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CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.