catch TypeError exception，performing "pass" operation

[Qiu Fossen]

catch TypeError exception，performing "pass" operation,this should be a code vulnerability.

like this:nova/nova/api/validation/validators.py

def _validate_name(instance):
    regex = parameter_types.valid_name_regex
    try:
        if re.search(regex.regex, instance):
            return True
    except TypeError:
        # The name must be string type. If instance isn't string type, the
        # TypeError will be raised at here.
        pass
    raise exception.InvalidName(reason=regex.reason)

[Balazs Gibizer (balazs-gibizer)]

I'm not sure what is the bug you report. The validator only passes if the re.search operation returns true otherwise we raise InvalidName exception. Also if TypeError is raised (and ignored) we raise InvalidName.