(CVE-2022-33980) Apache Commons Config Command Execution Bug

On July 5, 2022, Apache Commons Configuration released version 2.8 to fix a remote code execution vulnerability. Tracked as CVE-2022-33980, the severity is moderate.

The Commons Configuration software library provides a generic configuration interface that enables a Java application to read configuration data from a variety of sources. Commons Configuration provides typed access to single, and multi-valued configuration parameters.

Vulnerability Detail

Apache Commons Configuration performs variable interpolation, allowing properties to be dynamically evaluated and expanded. The standard format for interpolation is “${prefix:name}”, where “prefix” is used to locate an instance of org.apache.commons.configuration2.interpol.Lookup that performs the interpolation. Starting with version 2.4 and continuing through 2.7, the set of default Lookup instances included interpolators that could result in arbitrary code execution or contact with remote servers.

These lookups are:
– “script” – execute expressions using the JVM script execution engine (javax.script)
– “dns” – resolve dns records
– “url” – load values from urls, including from remote servers

Applications using the interpolation defaults in the affected versions may be vulnerable to remote code execution or unintentional contact with remote servers if untrusted configuration values are used.

Affected version

  • Apache Commons Configuration < 2.8


In this regard, we recommend that users upgrade Apache CouchDB to version 2.8 in time to fix CVE-2022-33980.

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