CVE-2022-33980

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. Users are recommended to upgrade to Apache
Commons Configuration 2.8.0, which disables the problematic interpolators
by default.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1014960&gt;