CVE-2018-19148 Detail

Current Description

Caddy through 0.11.0 sends incorrect certificates for certain invalid requests, making it easier for attackers to enumerate hostnames. Specifically, when unable to match a Host header with a vhost in its configuration, it serves the X.509 certificate for a randomly selected vhost in its configuration. Repeated requests (with a nonexistent hostname in the Host header) permit full enumeration of all certificates on the server. This generally permits an attacker to easily and accurately discover the existence of and relationships among hostnames that weren't meant to be public, though this information could likely have been discovered via other methods with additional effort.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  3.7 LOW
Vector:  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N


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Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/mholt/caddy/issues/1303 Issue Tracking  Patch  Third Party Advisory 
https://github.com/mholt/caddy/issues/2334 Issue Tracking  Patch  Third Party Advisory 
https://github.com/mholt/caddy/pull/2015 Issue Tracking  Patch  Third Party Advisory 
https://securitytrails.com/blog/caddy-web-server-ssl-bug Exploit  Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor cwe source acceptance level NIST  

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Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-19148
NVD Published Date:
11/10/2018
NVD Last Modified:
01/30/2019
Source:
MITRE