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Deserialization of Untrusted Data

CVE-2023-24621

Severity High
Score 7.8/10

Summary

An issue was discovered in Esoteric YamlBeans in versions prior to 1.16. It allows untrusted deserialisation to Java classes by default, where the data and class are controlled by the author of the YAML document being processed.

  • LOW
  • LOCAL
  • HIGH
  • UNCHANGED
  • REQUIRED
  • NONE
  • HIGH
  • HIGH

CWE-502 - Deserialization of Untrusted Data

Deserialization of untrusted data vulnerabilities enable an attacker to replace or manipulate a serialized object, replacing it with malicious data. When the object is deserialized at the victim's end the malicious data is able to compromise the victim’s system. The exploit can be devastating, its impact may range from privilege escalation, broken access control, or denial of service attacks to allowing unauthorized access to the application's internal code and logic which can compromise the entire system.

Advisory Timeline

  • Published