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CVE-2023-24620: Esoteric YamlBeans XML Entity Expansion vulnerability

August 25, 2023

An issue was discovered in Esoteric YamlBeans through 1.15. A crafted YAML document is able perform am XML Entity Expansion attack against YamlBeans YamlReader. By exploiting the Anchor feature in YAML, it is possible to generate a small YAML document that, when read, is expanded to a large size, causing CPU and memory consumption, such as a Java Out-of-Memory exception.

References

  • github.com/Contrast-Security-OSS/yamlbeans/blob/main/SECURITY.md
  • github.com/advisories/GHSA-vj49-j7rc-h54f
  • nvd.nist.gov/vuln/detail/CVE-2023-24620

Code Behaviors & Features

Detect and mitigate CVE-2023-24620 with GitLab Dependency Scanning

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Affected versions

All versions up to 1.15

Solution

Unfortunately, there is no solution available yet.

Impact 5.5 MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Learn more about CVSS

Source file

maven/com.esotericsoftware.yamlbeans/yamlbeans/CVE-2023-24620.yml

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