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.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/24xxx/CVE-2023-24620.json",
"cna_assigner": "mitre",
"unresolved_ranges": [
{
"extracted_events": [
{
"fixed": "1.15"
}
],
"source": "DESCRIPTION"
}
]
}{
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "1.15"
}
],
"source": "CPE_RANGE",
"cpe": "cpe:2.3:a:esotericsoftware:yamlbeans:*:*:*:*:*:*:*:*"
}