Your RSA-2048 keys break in 2030. Find every one of them before attackers do.

CVE-2016-3110

HIGH

CVE-2016-3110 is a high-severity (CVSS 7.5) Improper Input Validation vulnerability in fedoraproject fedora. O3 Security detects and blocks CVE-2016-3110 exploitation at runtime via eBPF exploit-chain detection and L7 egress monitoring, even on unpatched systems.

mod_cluster, as used in Red Hat JBoss Web Server 2.1, allows remote attackers to cause a denial of service (Apache http server crash) via an MCMP message containing a series of = (equals)…

Published
Sep 26, 2016
Updated
Jun 17, 2026
Affected
0 pkgs
Patched
None yet
Exploits
None indexed

Description

mod_cluster, as used in Red Hat JBoss Web Server 2.1, allows remote attackers to cause a denial of service (Apache http server crash) via an MCMP message containing a series of = (equals) characters after a legitimate element.

Affected Products

3 products · 7 configurations
OS
fedorafedoraproject
3 versions
282930
Application
jboss enterprise application platformredhat
2 versions
6.0.06.4.0
Application
jboss enterprise web serverredhat
2 versions
2.0.02.1

Detection & mitigation playbook

Vendor / appliance
  1. Detect

    Inventory every fedoraproject fedora deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for exploitation at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.

  2. Remediation status

    No patch has shipped for CVE-2016-3110 yet — track the fedoraproject fedora advisory for a fixed release and apply the workarounds below in the meantime.

  3. Mitigate without a patch

    Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.

  4. How O3 protects you

    O3 detects and blocks CVE-2016-3110 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.

Tailored to CVE-2016-3110. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

mod_cluster, as used in Red Hat JBoss Web Server 2.1, allows remote attackers to cause a denial of service (Apache http server crash) via an MCMP message containing a series of = (equals) characters after a legitimate element.
O3 Security · Runtime Protection

Is CVE-2016-3110 being exploited in your environment?

O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2016-3110 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.