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Posted to issues@commons.apache.org by "James Kukucka (Jira)" <ji...@apache.org> on 2021/09/03 15:55:00 UTC
[jira] [Created] (BCEL-358) IllegalArgumentException when loading
abstract classes
James Kukucka created BCEL-358:
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Summary: IllegalArgumentException when loading abstract classes
Key: BCEL-358
URL: https://issues.apache.org/jira/browse/BCEL-358
Project: Commons BCEL
Issue Type: Bug
Components: Verifier
Affects Versions: 6.5.0
Environment: {code:java}
public class ParserTest {
public void testWithInputStream(InputStream inputStream) throws IOException {
JavaClass clazz;
try {
clazz = new ClassParser(inputStream, "Hello.class").parse();
} catch (ClassFormatException e) {
// ClassFormatException thrown by the parser is just invalid input
Assume.assumeNoException(e);
return;
}
// Any non-IOException thrown here should be marked a failure
// (including ClassFormatException)
verifyJavaClass(clazz);
}
private void verifyJavaClass( JavaClass javaClass) throws IOException {
try {
Repository.addClass(javaClass);
Verifier verifier = StatelessVerifierFactory.getVerifier(javaClass.getClassName());
VerificationResult result;
result = verifier.doPass1();
assumeThat(result.getMessage(), result.getStatus(), is(VerificationResult.VERIFIED_OK));
result = verifier.doPass2();
assumeThat(result.getMessage(), result.getStatus(), is(VerificationResult.VERIFIED_OK));
for (int i = 0; i < javaClass.getMethods().length; i++) {
result = verifier.doPass3a(i);
assumeThat(result.getMessage(), result.getStatus(), is(VerificationResult.VERIFIED_OK));
}
} finally {
Repository.clearCache();
}
}
public static void main(String[] args) throws IOException {
ParserTest pt = new ParserTest();
FileInputStream fis = new FileInputStream(new File("/home/jamesk/bcel_bugs/illegalarg.input"));
pt.testWithInputStream(fis);
}
}
{code}
Reporter: James Kukucka
Attachments: illegalarg.input
Found during fuzzing research. IllegalArgumentException due to empty class name passed when loading interfaces.
Stack Trace:
{code:java}
Exception in thread "main" java.lang.IllegalArgumentException: Invalid class name
at org.apache.bcel.util.AbstractClassPathRepository.loadClass(AbstractClassPathRepository.java:67)
at org.apache.bcel.util.MemorySensitiveClassPathRepository.loadClass(MemorySensitiveClassPathRepository.java:33)
at org.apache.bcel.classfile.JavaClass.getInterfaces(JavaClass.java:847)
at org.apache.bcel.verifier.statics.Pass3aVerifier$InstOperandConstraintVisitor.getMethodRecursive(Pass3aVerifier.java:1181)
at org.apache.bcel.verifier.statics.Pass3aVerifier$InstOperandConstraintVisitor.visitINVOKESTATIC(Pass3aVerifier.java:1279)
at org.apache.bcel.generic.INVOKESTATIC.accept(INVOKESTATIC.java:86)
at org.apache.bcel.generic.InstructionHandle.accept(InstructionHandle.java:293)
at org.apache.bcel.verifier.statics.Pass3aVerifier.pass3StaticInstructionOperandsChecks(Pass3aVerifier.java:443)
at org.apache.bcel.verifier.statics.Pass3aVerifier.do_verify(Pass3aVerifier.java:208)
at org.apache.bcel.verifier.PassVerifier.verify(PassVerifier.java:70)
at org.apache.bcel.verifier.Verifier.doPass3a(Verifier.java:88)
{code}
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