Deserialization of Untrusted Data Affecting org.apache.solr:solr-core package, versions [5.0.0,7.0.0)



    Exploit Maturity Mature
    Attack Complexity Low
    Confidentiality High
    Availability High
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9.8 critical

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  • published 7 Mar 2019
  • disclosed 7 Mar 2019
  • credit Michael Stepankin

How to fix?

Upgrade org.apache.solr:solr-core to version 7.0.0 or higher.


org.apache.solr:solr-core is an open source enterprise search platform built on Apache Lucene

Affected versions of this package are vulnerable to Deserialization of Untrusted Data. ConfigAPI allows to set a jmx.serviceUrl that will create a new JMXConnectorServerFactory and trigger a call with 'bind' operation to a target RMI/LDAP server. A malicious RMI server could respond with arbitrary object that will be deserialized on the Solr side using java's ObjectInputStream, which is considered unsafe. This type of vulnerabilities can be exploited with ysoserial tool. Depending on the target classpath, an attacker can use one of known "gadget chains" to trigger Remote Code Execution on the Solr side.