Insufficient Logging in etcd - #VU130100
Published: August 5, 2020 / Updated: May 5, 2026
Vulnerability identifier: #VU130100
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-778
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause misleading audit logs.
The vulnerability exists due to improper logging in Authenticate endpoint when handling authentication attempts for users with CN-based authentication only. A remote user can send an authentication request to cause misleading audit logs.
The issue affects users who have no password and authenticate only through a client certificate.
Affected software
etcd
Remediation
Install security update from vendor's website.
etcd - addressed in versions 3.3.23, 3.4.10