CVE Vulnerability

CVE-2020-10185

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.

6.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.6 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
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
Configurations

Configuration 1

cpe:2.3:a:yubico:yubikey_one_time_password_validation_server:*:*:*:*:*:*:*:*
Information

Published : 2020-03-05 11:15

Updated : 2020-03-12 11:15

NVD link : CVE-2020-10185

Mitre link : CVE-2020-10185

Products Affected
No products.
CWE
CWE-294

Authentication Bypass by Capture-replay