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Exposure of class information in RESTEasy

Moderate severity GitHub Reviewed Published Apr 7, 2021 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

maven org.jboss.resteasy:resteasy-core (Maven)

Affected versions

>= 4.6.0, < 4.6.1
>= 4.0.0, < 4.5.10
>= 3.0.0, < 3.16.0

Patched versions

4.6.1
4.5.10
3.16.0

Description

A flaw was found in RESTEasy in all current versions of RESTEasy up to 4.6.0.Final. The endpoint class and method names are returned as part of the exception response when RESTEasy cannot convert one of the request URI path or query values to the matching JAX-RS resource method's parameter value. The highest threat from this vulnerability is to data confidentiality.

References

Published by the National Vulnerability Database Mar 26, 2021
Reviewed Mar 31, 2021
Published to the GitHub Advisory Database Apr 7, 2021
Last updated Feb 1, 2023

Severity

Moderate

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
Low
Integrity
None
Availability
None

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:L/I:N/A:N

EPSS score

0.070%
(32nd percentile)

Weaknesses

CVE ID

CVE-2021-20289

GHSA ID

GHSA-244r-fcj3-ghjq

Source code

No known source code
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