CVE-2019-16942 – jackson-databind: Serialization gadgets in org.apache.commons.dbcp.datasources.*

https://notcve.org/view.php?id=CVE-2019-16942

A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.0.0 through 2.9.10. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has the commons-dbcp (1.4) jar in the classpath, and an attacker can find an RMI service endpoint to access, it is possible to make the service execute a malicious payload. This issue exists because of org.apache.commons.dbcp.datasources.SharedPoolDataSource and org.apache.commons.dbcp.datasources.PerUserPoolDataSource mishandling. Se descubrió un problema de escritura polimórfica en FasterXML jackson-databind versión 2.0.0 hasta 2.9.10. Cuando la Escritura Predeterminada está habilitada (tanto globalmente o para una propiedad específica) para un end point JSON expuesto externamente y el servicio posee el jar commons-dbcp (versión 1.4) en el classpath, y un atacante puede encontrar un end point de servicio RMI para acceder, es posible lograr que el servicio ejecute una carga maliciosa. • https://access.redhat.com/errata/RHSA-2019:3901 https://access.redhat.com/errata/RHSA-2020:0159 https://access.redhat.com/errata/RHSA-2020:0160 https://access.redhat.com/errata/RHSA-2020:0161 https://access.redhat.com/errata/RHSA-2020:0164 https://access.redhat.com/errata/RHSA-2020:0445 https://github.com/FasterXML/jackson-databind/issues/2478 https://issues.apache.org/jira/browse/GEODE-7255 https://lists.apache.org/thread.html/519eb0fd45642dcecd9ff74cb3e71c20a4753f7d82e2f07864b5108f%40%3Cdev. • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-502: Deserialization of Untrusted Data •