Port 912 Details
known port assignments and vulnerabilities
3 records found
||Port assigned to the APEX (Application Exchange Core) protocol. It is an XML-based protocol designed for sending instant messages based on the Blocks Extensible Exchange Protocol (BEEP).
APEX also uses TCP port 913 as its endpoint-relay service. The APEX protocol has been replaced by the SIP, SIMPLE and XMPP protocols. Port 912 is used primarily to receive and send messages that are originated via the end-points located in port 913. Information sent and received via port 912 includes the endpoint that created it, a URI reference point, the endpoints that will receive it and other options.
RealFlex RealWin is a SCADA server package for medium and small applications designed to control and monitor real-time applications. The RealWin application runs an HMI service on port 912/tcp. This service is vulnerable to two stack-based buffer overflows. One vulnerability is caused by the use of sprintf() in the SCPC_INITIALIZE() and SCPC_INITIALIZE_RF() functions. The second vulnerability is caused by the use of strcpy() in the SCPC_TXTEVENT() function.
References: [CVE-2010-4142], [BID-44150]
||APEX relay-relay service [RFC3340]
||APEX relay-relay service
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SANS Internet Storm Center: port 912
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.
TCP ports use the Transmission Control Protocol. TCP is the most commonly used protocol
on the Internet and any TCP/IP network. Whereas the IP protocol deals only with packets, 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, a communications protocol for the Internet network,
transport, and session layers. Like TCP (Transmission Control Protocol),
UDP is used with IP (the Internet Protocol) and makes possible 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, where dropping some packets is preferable to waiting for delayed data.
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