Caddy vulnerable to Authentication Bypass due to mishandling of TLS client authentication · CVE-2018-21246 · GitHub Advisory Database · GitHub

Caddy vulnerable to Authentication Bypass due to mishandling of TLS client authentication

Critical severity GitHub Reviewed Published Oct 6, 2022 to the GitHub Advisory Database • Updated Feb 14, 2023

Package

github.com/caddyserver/caddy (Go)

Affected versions

< 0.10.13

Patched versions

0.10.13

Description

Caddy before 0.10.13 mishandles TLS client authentication, as demonstrated by an authentication bypass caused by the lack of the StrictHostMatching mode.

References

Published to the GitHub Advisory Database Oct 6, 2022

Reviewed Oct 6, 2022

Last updated Feb 14, 2023

Severity

Critical

9.8

/ 10

CVSS base metrics

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H