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redhatcveRedhat.comRH:CVE-2019-14439
HistoryApr 09, 2020 - 10:40 a.m.

CVE-2019-14439

2020-04-0910:40:14
redhat.com
access.redhat.com
12

EPSS

0.001

Percentile

45.6%

A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.x before 2.9.9.2. This occurs when Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has the logback jar in the classpath.

Mitigation

The following conditions are needed for an exploit, we recommend avoiding all if possible

  • Deserialization from sources you do not control
  • enableDefaultTyping()
  • @JsonTypeInfo using id.CLASSorid.MINIMAL_CLASS`