[jboss-jira] [JBoss JIRA] (WFCORE-2545) Principal with null name causes hidden NPE for chained-principal-transformer

Principal with null name causes hidden NPE for chained-principal-transformer ---------------------------------------------------------------------------- Key: WFCORE-2545 URL: https://issues.jboss.org/browse/WFCORE-2545 Project: WildFly Core Issue Type: Bug Components: Security Reporter: Ondrej Lukas Assignee: Darran Lofthouse Priority: Critical Fix For: 3.0.0.Beta29 In case when Principal with null name is used in {{chain}} of {{org.wildfly.extension.elytron.capabilities.PrincipalTransformer}} then this method throw NullPointerException which is hidden to user due to JBEAP-9625. This issue can be simply reproduced by using regex-validating-principal-transformer and user which does not match given pattern. Then Principal name is set to null which results to following NPE: {code} java.lang.NullPointerException: java.util.regex.Matcher.getTextLength(Matcher.java:1283) java.util.regex.Matcher.reset(Matcher.java:309) java.util.regex.Matcher.<init>(Matcher.java:229) java.util.regex.Pattern.matcher(Pattern.java:1093) org.wildfly.security.auth.util.RegexNameRewriter.rewriteName(RegexNameRewriter.java:55) org.wildfly.security.auth.server.NameRewriter.lambda$asPrincipalRewriter$1(NameRewriter.java:63) org.wildfly.extension.elytron.capabilities.PrincipalTransformer.lambda$chain$1(PrincipalTransformer.java:64) ... {code} Since there is no related documentation or javadoc it is also possible that issue is rather in regex-validating-principal-transformer which could set Principal to null instead of Principal name to null. It must be clarified by engineering.