CVE-2016-6330

Think of JON like a “control panel” server that agents connect to so you can manage systems. This bug is dangerous because an attacker may be able to send a special-looking message over HTTP that tricks JON into running attacker code. The risk is much higher if your server/agent links are not protected with SSL authentication, especially if the attacker can reach JON from outside your trusted networks.

This matters if you use or run Red Hat JBoss Operations Network (JON) and have not configured SSL authentication for the JON server/agent communication. The vulnerability is reachable over the network (it involves crafted HTTP requests), so it’s most relevant when JON is reachable from the internet or from untrusted networks. If SSL authentication is properly configured and agent communication is only accessible through trusted paths, the risk is reduced.

This is a high-impact issue (arbitrary code execution) and the attack is remotely triggerable, so you should treat it as urgent to assess and mitigate. There is no KEV listing, and no public exploit code is known to be available, so this is not “confirmed actively exploited everywhere,” but attackers could still attempt it against exposed or misconfigured systems. Follow your patch/configure plan promptly to bring JON into a safe state.

1. Confirm exposure and configuration

   • Determine where JBoss Operations Network (JON) is reachable from:
     • Is the JON server accessible from the public internet, or only from your internal admin networks?
     • Are agent connections reachable from untrusted networks?
   • In your JON configuration, verify whether SSL authentication is enabled for JON server/agent communication.

2. Verify version and vendor guidance

   • Write down your exact JON server version.
   • Check with Red Hat support / release notes / security advisories for CVE-2016-6330 to see if:
     • there is a fixed release for your version branch, or
     • the mitigation is “configure SSL authentication for server/agent communication.”
   • The provided findings state there is no patch/solution version information available here, so you’ll need vendor confirmation for a definitive upgrade target.

3. Apply the mitigation (configuration hardening)

   • If SSL authentication is not configured for JON server/agent communication, enable it.
   • After changes, validate that legitimate agents can still connect successfully.

4. Network containment if you can’t reach a fixed state quickly

   • Restrict inbound access to the JON server to only the specific management networks and hosts that require it.
   • Block public internet access to JON interfaces; do not expose management endpoints to the world.

5. Monitor after changes

   • Review access logs for unusual HTTP requests targeting JON endpoints (especially malformed or unexpected requests).
   • Check system logs for signs of unexpected process execution or service changes that could indicate compromise.

6. CISA due date (KEV)

   • This CVE is not listed in the CISA KEV set according to the findings, so there is no CISA-specific due date indicated here.

CVE-2016-6330 is a remote code execution issue affecting Red Hat JBoss Operations Network (JON). The core weakness aligns with CWE-502 (deserialization of untrusted data), where a crafted HTTP request can lead to arbitrary code execution when SSL authentication is not configured for JON server/agent communication. The backstop indicates the problem is related to an incomplete fix for CVE-2016-3737.

Exploitation status in the provided findings:

• Not listed in CISA KEV.
• No public exploit code on record.

Risk indicators (from provided findings):

• EPSS is predicted at 8.9% with a flat trend, but this is not a substitute for vendor fix/config validation.

Fix availability:

• No fix/patch information is available in the provided findings; therefore, you should rely on Red Hat’s security guidance for either a fixed JON version or the required secure configuration (SSL authentication for server/agent communication).