CVE-2023-24620

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.

CVSS v3.1

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

CVSS v3.1

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

EPSS

0.36% chance of exploitation in the next 30 days, 29th percentile

Published

2023-08-25

Updated

2024-10-02

Proof-of-concept exploits (1)

• Contrast-Security-OSS/yamlbeans/blob/main/SECURITY.md

References

• CVE Record
• NVD entry

Related

• CVE-2021-44228
• CVE-2023-24621
• CVE-2023-34040
• CVE-2023-24610
• CVE-2023-24609
• CVE-2023-24626