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.
Remediation
References
https://contrastsecurity.com
https://github.com/Contrast-Security-OSS/yamlbeans/blob/main/SECURITY.md
https://github.com/EsotericSoftware
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