PT-2020-11960 · Yubico · Yubikey Validation Server

Published 2020-03-05 · Updated 2020-03-13 · CVE-2020-10184

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions YubiKey Validation Server versions prior to 2.40

Description The issue concerns a denial of service, potentially related to SQL injection, due to the verify endpoint not checking the length of SQL queries in the YubiKey Validation Server. This could allow remote attackers to exploit the service. The problem is relevant to self-hosted OTP validation services, not YubiCloud.

Recommendations For versions prior to 2.40, update to version 2.40 or later to resolve the issue. As a temporary workaround, consider restricting access to the verify endpoint to minimize the risk of exploitation.

Exploit

Fix

DoS

SQL injection

Weakness Enumeration

CWE-89

Related Identifiers

CVE-2020-10184

DLA-2141-1

Affected Products

Yubikey Validation Server

References · 10

• 🔥 https://yubico.com/support/security-advisories/ysa-2020-01 · Exploit
• https://cve.org/CVERecord?id=CVE-2020-10184 · Security Note
• https://ubuntu.com/security/CVE-2020-10184 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-10184 · Security Note
• https://osv.dev/vulnerability/DLA-2141-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-10184 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-10184 · Vendor Advisory
• https://github.com/Yubico/yubikey-val/commit/d0e4db3245deb5ce0c8d7d26069c78071a140286 · Note
• https://github.com/Yubico/yubikey-val/releases/tag/yubikey-val-2.40 · Note
• https://lists.debian.org/debian-lts-announce/2020/03/msg00014.html · Note