Arbitrary Code Execution Affecting org.apache.commons:commons-text package, versions [1.5,1.10.0)
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-JAVA-ORGAPACHECOMMONS-3043138
- published 13 Oct 2022
- disclosed 13 Oct 2022
- credit Alvaro Muñoz
Introduced: 13 Oct 2022
CVE-2022-42889 Open this link in a new tabHow to fix?
Upgrade org.apache.commons:commons-text to version 1.10.0 or higher.
Overview
Affected versions of this package are vulnerable to Arbitrary Code Execution via the StringSubstitutor interpolator object. Exploiting this vulnerability is possible when untrusted data flows into the StringSubstitutor.replace() or StringSubstitutor.replaceIn() methods.
Due to the nature of these methods as ones that process application data and not user input, a remote attacker would need prior access to a system in the affected environment positioned to supply such data.
Notes
The Nashorn scripting engine that can be used to exploit this vulnerability was available by default in JDKs up to 14.0.2. As of JDK 15, this vulnerability can only be exploited if another scripting engine has been added, such as JEXL.
Vulnerable lookups:
script- executes expressions using the JVM script execution engine (javax.script)dns- resolves dns recordsurl- loads values from urls, including from remote servers
PoC
final StringSubstitutor interpolator = StringSubstitutor.createInterpolator();
String out = interpolator.replace("${script:javascript:java.lang.Runtime.getRuntime().exec('touch /tmp/foo')}");
System.out.println(out);