Vulnerability in Yubico Yubikey One Time Password Validation Server
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.
EPSS exploit prediction
EPSS: 0.015 (72.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.yubico.com/support/security-advisories/ysa-2020-01/ (Exploit, Vendor Advisory)
- github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40 (Third Party Advisory, Release Notes)
- lists.debian.org/debian-lts-announce/2020/03/msg00014.html (mailing-list)
Frequently asked questions
- What is CVE-2020-10185?
- CVE-2020-10185 is a high-severity vulnerability in Yubico Yubikey One Time Password Validation Server, classified under Authentication Bypass by Capture-replay. CVSS score: 8.6/10. Published 2020-03-05.
- How severe is CVE-2020-10185?
- High severity. CVSS v3 base score is 8.6 out of 10.