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CVE-2020-10185

Good to know:

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Date: March 12, 2020

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.

Language: VALA

Severity Score

Related Resources (7)

https://www.yubico.com/support/security-advisories/ysa-2020-01/
https://lists.debian.org/debian-lts-announce/2020/03/msg00014.html
https://github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40
https://security-tracker.debian.org/tracker/CVE-2020-10185
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-10185
https://nvd.nist.gov/vuln/detail/CVE-2020-10185
https://www.mend.io/vulnerability-database/CVE-2020-10185

Severity Score

Weakness Type (CWE)

Authentication Bypass by Capture-replay

CWE-294

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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