[LOG4J2-2244] org.apache.logging.log4j.core.lookup.EnvironmentLookup may throw NPE

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0
• Component/s: Core
• Assignee: Gary D. Gregory
• Reporter: Gary D. Gregory
• Created: 10/Feb/18 16:53
• Updated: 10/Feb/18 19:18
• Resolved: 10/Feb/18 19:18

Description

The class org.apache.logging.log4j.core.lookup.EnvironmentLookup may throw an NPE when calling System.getenv() if the key argument is null.

The Javadoc for our lookup method states that a key may be null, so check for that condition instead of throwing an NPE.