Improper Certificate Validation in Traefik - CVE-2019-20894
Published: July 2, 2020 / Updated: August 8, 2020
Vulnerability identifier: #VU34176
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-20894
CWE-ID: CWE-295
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
Traefik 2.x, in certain configurations, allows HTTPS sessions to proceed without mutual TLS verification in a situation where ERR_BAD_SSL_CLIENT_AUTH_CERT should have occurred.
Affected software
Traefik
How to mitigate CVE-2019-20894
Install update from vendor's website.
Traefik - update to 2.0.1