Port 1882: CA eTrust Common Services — Security Software With a Security Problem

What This Port Is

Port 1882 sits in the registered port range (1024-49151). These ports are assigned by IANA to specific services and applications, though unlike well-known ports (0-1023), they don't require elevated privileges to use.

Port 1882 is assigned to ecsqdmn — the CA eTrust Common Services (eCS) daemon, a component running inside CA Technologies' enterprise security product suite. You'd find it in:

• CA eTrust Secure Content Manager
• CA Gateway Security

These were enterprise-grade email and web content filtering products, popular in corporate environments in the 2000s and early 2010s. The eCS daemon handled inter-process communication between security components on the local machine and across the network.

The Vulnerability History

Port 1882 has a notable security record — notable because it belongs to security software.

CVE-2011-0758 is the serious one. The ECSQdmn.exe component in CA eTrust Secure Content Manager 8.0 and CA Gateway Security 8.1 contained an integer calculation error leading to a heap-based buffer overflow. A remote attacker could send a crafted request to port 1882 and execute arbitrary code on the target system. CVSS score: 10.0 — the maximum.¹

CVE-2008-1984 was an earlier issue in the same component, allowing remote attackers to crash the process or spike CPU usage via a malformed packet — a denial of service with no authentication required.²

Both vulnerabilities were in the eCS transport component listening on this port. If you find port 1882 open on a system today, it almost certainly means CA eTrust software is still running there, unpatched and unnoticed.

Is This Port in Active Use?

Rarely. CA's eTrust product line has been largely superseded or discontinued. Port 1882 open on a modern system is a flag — it usually means legacy security software that hasn't been decommissioned, often on a machine nobody remembers managing.

There are no known modern, unofficial uses of this port. It's not been repurposed by any notable application or protocol.

How to Check What's Listening

To see if anything is bound to port 1882 on your system:

Linux / macOS:

ss -tlnp | grep 1882
# or
lsof -i :1882

Windows:

netstat -ano | findstr :1882

If you see a process listening here and you're not running CA eTrust software intentionally, investigate it. The port has a history of exploitation.

Why Unassigned (and Assigned-but-Obscure) Ports Matter

The IANA registry assigns ports to create predictability: when you open port 443, the world knows to expect HTTPS. The assignment system means network operators can reason about traffic — a firewall rule blocking port 1882 on a network with no CA eTrust software is a safe rule to write.

But registered ports like this one reveal something else: the archeology of software. Port 1882 is a record that in the early 2000s, CA Technologies built an enterprise security product that needed a port, requested one from IANA, and shipped it. The product eventually aged out. The port number remains, frozen in the registry, a small memorial to ECSQdmn.exe.