Facebook Google Plus Twitter LinkedIn YouTube RSS Menu Search Resource - BlogResource - WebinarResource - ReportResource - Eventicons_066 icons_067icons_068icons_069icons_070

[R2] HPE Operations Orchestration Incomplete Fix for CVE-2016-8519



Tenable originally published the details of CVE-2016-8519, a Java deserialization vulnerability in HPE Operations Orchestrations, in TRA-2017-05. The short version is that HPE Operations Orchestrations 10.60 was vulnerable to Java deserialization attacks through its web interface due to certain endpoints using HttpInvokerServiceExporter.

In order to fix CVE-2016-8519, HPE replaced their usage of HttpInvokerServiceExporter with a new class called SecureHttpInvokerServiceExporter. This new class creates a wrapper around the incoming ObjectInputStream to create a LookAheadObjectInputStream. At first glance, this LookAheadObjectInputStream appears to follow guidelines laid out by Pierre Ernst in the article Look-ahead Java deserialization. Specifically, LookAheadObjectInputStream contains an overridden resolveClass that has logic to verify the object that's about to be deserialized is of the type RemoteInvocation. However, the code is a little weird.

protected Class<?> resolveClass(ObjectStreamClass desc) throws IOException, ClassNotFoundException
    if (logger.isDebugEnabled())
        logger.debug("Entering resolveClass: firstTime=[" + this.firstTime + "] name=[" + desc.getName() + "]");

    if ((this.firstTime) &&
        (!StringUtils.equals(desc.getName(), RemoteInvocation.class.getName())))
        String message = "Unauthorized de-serialization attempt for class " + desc.getName();
        throw new InvalidClassException(message);

    this.firstTime = false;
    return super.resolveClass(desc);

Look at how the boolean member variable firstTime is used. This resolveClass implementation will only verify the first Object and after that it doesn't care. But maybe this isn't a mistake? Maybe RemoteInvocation won't ever have any inner objects to deserialize? Wrong.

public class RemoteInvocation implements Serializable
    /** use serialVersionUID from Spring 1.1 for interoperability */
    private static final long serialVersionUID = 6876024250231820554L;
    private String methodName;

    private Class<?>[] parameterTypes;

    private Object[] arguments;

    private Map<String, Serializable> attributes;

An attacker can stick arbitrary serializable objects into the RemoteInvocation attributes map. Which means the resolveClass implementation in the LookAheadObjectInputStream is arbitrary to bypass. Furthermore, an exploitable Apache Commons BeanUtils is on the classpath. Therefore, a remote unauthenticated attacker can still achieve remote code execution by sending HTTP POST requests to /oo/backwards-compatibility/wsExecutionBridgeService.


Upgrade to HPE Operations Orchestration 10.80

Disclosure Timeline

2017-01-16 - Issue discovered
2017-01-17 - Submitted to ZDI
2017-02-09 - ZDI confirms vulnerability and accepts
2017-08-30 - HP publishes advisory
2017-09-05 - ZDI publishes advisory

All information within TRA advisories is provided “as is”, without warranty of any kind, including the implied warranties of merchantability and fitness for a particular purpose, and with no guarantee of completeness, accuracy, or timeliness. Individuals and organizations are responsible for assessing the impact of any actual or potential security vulnerability.

Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.

For more details on submitting vulnerability information, please see our Vulnerability Reporting Guidelines page.

If you have questions or corrections about this advisory, please email [email protected]

Try for Free Buy Now

Try Tenable.io Vulnerability Management


Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Sign up now and run your first scan within 60 seconds.

Buy Tenable.io Vulnerability Management

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

65 assets

Try Nessus Professional Free


Nessus® is the most comprehensive vulnerability scanner on the market today. Nessus Professional will help automate the vulnerability scanning process, save time in your compliance cycles and allow you to engage your IT team.