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Esoteric YamlBeans Unsafe Deserialization vulnerability

High severity GitHub Reviewed Published Aug 25, 2023 to the GitHub Advisory Database • Updated Nov 8, 2023

Package

maven com.esotericsoftware.yamlbeans:yamlbeans (Maven)

Affected versions

<= 1.15

Patched versions

None

Description

An issue was discovered in Esoteric YamlBeans through 1.15. It allows untrusted deserialisation to Java classes by default, where the data and class are controlled by the author of the YAML document being processed.

References

Published by the National Vulnerability Database Aug 25, 2023
Published to the GitHub Advisory Database Aug 25, 2023
Reviewed Aug 25, 2023
Last updated Nov 8, 2023

Severity

High

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
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS score

0.056%
(25th percentile)

Weaknesses

CVE ID

CVE-2023-24621

GHSA ID

GHSA-jm7r-4pg6-gf26

Source code

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