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From Tim Bain <>
Subject Re: Messages dequeued but not consumed
Date Fri, 12 Feb 2016 19:45:07 GMT
Happy to help, and sorry I didn't think of that recent change as a likely

You should understand that the command line option you quoted is a security
vulnerability that you've explicitly opened in your own broker, which can
allow a malicious user to execute code on your system.  The right way to
use that flag is to explicitly list the classes you allow to be
deserialized, or at most use package wildcards to avoid explicitly listing
individual classes and subpackages in a trusted parent package.

Does the broker warn, very clearly, at startup that the configuration
you're using constitutes a security vulnerability?  If not, I'll write an
enhancement request in JIRA for that.

On Feb 12, 2016 9:43 AM, "mhemple" <> wrote:

> ObjectMessage serialization security was the issue.
> *
> ObjectMessage objects depend on Java serialization of marshal/unmarshal
> object payload. This process is generally considered unsafe as malicious
> payload can exploit the host system. That's why starting with versions
> 5.12.2 and 5.13.0, ActiveMQ enforces users to explicitly whitelist packages
> that can be exchanged using ObjectMessages.*
> I saw this a few days ago and added a white list but it didn't fix the
> issue.  I also tried running against AMQ 5.11.3 and it didn't work.
> Apparently they added the security feature to 5.11.3 too.  Anyway, I added
> this (-Dorg.apache.activemq.SERIALIZABLE_PACKAGES="*") to the client side
> and AMQ vm arguments and now everything is working as it should.
> Thanks Tim
> --
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