What is the CVSS score of CVE-2020-10185?

CVE-2020-10185 has a CVSS 3.1 base score of 8.6 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H. EPSS exploitation probability: 1.5%.

Is there a public PoC exploit available for CVE-2020-10185?

Yes, a public proof-of-concept exploit is available for CVE-2020-10185. Prioritise patching immediately. EPSS: 1.5%.

Yubikey One Time Password Validation Server CVE-2020-10185

HIGH

Authentication Bypass by Capture-replay (CWE-294)

2020-03-05 cve@mitre.org

Information Disclosure Yubikey One Time Password Validation Server

8.6

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.6 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

High

Lifecycle Timeline

CVE Published

Mar 05, 2020 - 23:15 nvd

HIGH 8.6

DescriptionNVD

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.

AnalysisAI

The sync endpoint in YubiKey Validation Server before 2.40 allows remote attackers to replay an OTP. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-294. 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 products include: Yubico Yubikey One Time Password Validation Server. Version information: before 2.40.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.