cve/2023/CVE-2023-24620.md

### [CVE-2023-24620](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-24620)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

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.

### POC

#### Reference
- https://github.com/Contrast-Security-OSS/yamlbeans/blob/main/SECURITY.md

#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds