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Port 5672 Details

known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
5672 tcp,udp,sctp amqp MOHAA Reverend

SolarWinds Server & Application Monitor (SAM) uses the following ports:
4369 TCP - RabbitMQ messaging (EMPD)
5671 TCP - RabbitMQ messaging (AMQP over TLS/SSL)
5672 TCP - RabbitMQ messaging (AMQP unencrypted backup port)
17777 TCP - Orion module traffic, RSA handshake, AES 256 communication using WCF
17778 TCP - SolarWinds Information Service API
17779 TCP - SolarWinds Toolset Integration over HTTP
17790 TCP - Agent communication with the Orion server
17791 TCP - Agent communication with the Orion server
25672 TCP - RabbitMQ messaging (Erlang distribution)
SolarWinds also uses the following standard ports: 22/TCP, 25/TCP, 135/TCP, 161-162/UDP, 443/TCP, 445/TCP, 465/TCP, 587/TCP, 1801/TCP

Zulip, an open-source team collaboration tool. Zulip Server installs RabbitMQ for internal message passing. In versions of Zulip Server prior to 4.9, the initial installation (until first reboot, or restart of RabbitMQ) does not successfully limit the default ports which RabbitMQ opens; this includes port 25672, the RabbitMQ distribution port, which is used as a management port. RabbitMQ's default "cookie" which protects this port is generated using a weak PRNG, which limits the entropy of the password to at most 36 bits; in practicality, the seed for the randomizer is biased, resulting in approximately 20 bits of entropy. If other firewalls (at the OS or network level) do not protect port 25672, a remote attacker can brute-force the 20 bits of entropy in the "cookie" and leverage it for arbitrary execution of code as the rabbitmq user. They can also read all data which is sent through RabbitMQ, which includes all message traffic sent by users. Version 4.9 contains a patch for this vulnerability. As a workaround, ensure that firewalls prevent access to ports 5672 and 25672 from outside the Zulip server.
References: [CVE-2021-43799]

Advanced Message Queueing Protocol, see (IANA official)
5672 tcp,udp amqp AMQP, registered 2006-01 IANA
5672 sctp amqp AMQP, registered 2007-03 IANA
5500-5699 tcp applications MOHAA Reverend Portforward
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Related ports: 5671  17777  17790  25672  

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External Resources
SANS Internet Storm Center: port 5672

Port numbers in computer networking represent communication endpoints. Ports are unsigned 16-bit integers (0-65535) that identify a specific process, or network service. IANA is responsible for internet protocol resources, including the registration of commonly used port numbers for well-known internet services.
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.

TCP ports use the Transmission Control Protocol, the most commonly used protocol on the Internet and any TCP/IP network. TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and that packets will be delivered in the same order in which they were sent. Guaranteed communication/delivery is the key difference between TCP and UDP.

UDP ports use the Datagram Protocol. Like TCP, UDP is used in combination with IP (the Internet Protocol) and facilitates the transmission of datagrams from one computer to applications on another computer, but unlike TCP, UDP is connectionless and does not guarantee reliable communication; it's up to the application that received the message to process any errors and verify correct delivery. UDP is often used with time-sensitive applications, such as audio/video streaming and realtime gaming, where dropping some packets is preferable to waiting for delayed data.

When troubleshooting unknown open ports, it is useful to find exactly what services/processes are listening to them. This can be accomplished in both Windows command prompt and Linux variants using the "netstat -aon" command. We also recommend runnig multiple anti-virus/anti-malware scans to rule out the possibility of active malicious software. For more detailed and personalized help please use our forums.

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