Is CVE-2018-21246 actively exploited?

CVE-2018-21246 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2018-21246?

CVE-2018-21246 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2018-21246?

Patch guidance is available from caddyserver security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2018-21246.

Fix CVE-2018-21246 - CRITICAL caddyserver caddy

Description

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

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-287 · Improper Authentication

Metadata

Primary Vendor: CADDYSERVER
Published: 6/15/2020
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2018-21246

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary