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# Type of request: This is a ...

[x] bug report
[ ] feature request

# Detailed description

In the `ReceiveMessageResult` of the SQS service, I saw this XML from localstack:

```
...
<MessageAttribute>
     <Name>encoding</Name>
    <Value>
        <DataType>String</DataType>
        <StringValue><![CDATA[gzip]]></StringValue>
    </Value>
</MessageAttribute>
...
```

The `<![CDATA[gzip]]>` is slightly different from AWS, which doesn't wrap the value in a `<!CDATA[[]]>` section. This shouldn't be a problem for XML parsers that accept both plain characters and CDATA sections for this element, but the XML parser I was using did not, which causes an error when running the code against localstack but not when running the code against AWS. There is obviously a bug in the XML parser as well, but I thought that I should at least post this here since it is different than what AWS SQS does.

## Expected behavior

MessageAttribute::Value elements should not be wrapped in `CDATA` sections.

## Actual behavior

MessageAttribute::Value elements all seem to be wrapped in `CDATA` sections.

# Steps to reproduce

Send a message to the SQS service which contains some custom message attributes, then make a ReceiveMessageRequest.

## Command used to start LocalStack

`docker run --env "SERVICES=sqs" localstack/localstack`

## Client code (AWS SDK code snippet, or sequence of "awslocal" commands)

...

return config.service_port(service)
def do_start_edge(port, use_ssl, asynchronous=False):
    try:
        
        from localstack_ext.services import dns_server
        dns_server.start_servers()
    except Exception:
        pass
    
    print('Starting edge router (http%s port %s)...' % ('s' if use_ssl else '', port))
    
    proxy = start_proxy_server(port, use_ssl=True, update_listener=ProxyListenerEdge())
    if not asynchronous:
        proxy.join()
    return proxy
def can_use_sudo():
    try:
        run('echo | sudo -S echo', print_error=False)
        return True
    except Exception:
        return False
def ensure_can_use_sudo():
    if not is_root() and not can_use_sudo():
        print('Please enter your sudo password (required to configure local network):')
        run('sudo echo', stdin=True)
def start_edge(port=None, use_ssl=True, asynchronous=False):