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Undertow client not checking server identity presented by server certificate in https connections

Critical severity GitHub Reviewed Published Feb 23, 2023 to the GitHub Advisory Database • Updated Mar 12, 2025

Package

mavenio.undertow:undertow-core (Maven)

Affected versions

>= 2.3.0, < 2.3.5.Final
< 2.2.24.Final

Patched versions

2.3.5.Final
2.2.24.Final

Description

The undertow client is not checking the server identity presented by the server certificate in https connections. This should be performed by default in https and in http/2.

References

Published by the National Vulnerability DatabaseFeb 23, 2023
Published to the GitHub Advisory Database Feb 23, 2023
Reviewed Mar 3, 2023
Last updated Mar 12, 2025

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector:More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity:More severe for the least complex attacks.
Privileges required:More severe if no privileges are required.
User interaction:More severe when no user interaction is required.
Scope:More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality:More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity:More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability:More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(37th percentile)

Weaknesses

Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Learn more on MITRE.

CVE ID

CVE-2022-4492

GHSA ID

GHSA-pfcc-3g6r-8rg8

Source code

No known source code

Credits

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