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Port 4244 Details
known port assignments and vulnerabilities
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 4244 |
tcp,udp |
vrml-multi-use |
Viber uses the following ports: 80, 443, 4244, 5242, 5243, 7985 TCP/UDP
WhatsApp uses these ports:
80, 443, 4244, 5222, 5223, 5228, 5242 TCP
50318, 59234 TCP/UDP
3478, 45395 UDP
QLIK Sense (cloud analytics platform) runs HTTPS service on port 4244
Viber through 11.7.0.5 allows a remote attacker who can capture a victim's internet traffic to steal their Viber account, because not all Viber protocol traffic is encrypted. TCP data packet 9 on port 4244 from the victim's device contains cleartext information such as the device model and OS version, IMSI, and 16 bytes of udid in a binary format, which is located at approximately offset 0x40 of this packet. Then, the attacker installs Viber on his device, initiates the registration process for any phone number, but doesn't enter a pin from SMS. Instead, he closes Viber. Next, the attacker rewrites his udid with the victim's udid, modifying the viber_udid file, which is located in the Viber preferences folder. (The udid is stored in a hexadecimal format.) Finally, the attacker starts Viber again and enters the pin from SMS.
References: [CVE-2019-18800]
IANA registered for: VRML Multi User Systems |
SG
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| 4244 |
vrml |
vrml-multi-use |
Multi User Systems |
Neophasis
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| 4242-4299 |
tcp,udp |
vrml-multi-use |
Multi User Systems |
SANS
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| 4200-4299 |
tcp,udp |
vrml-multi-use |
VRML Multi User Systems |
IANA
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4 records found
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jump to:
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Related ports: 3478 5242 5243 7985
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External Resources
SANS ISC: port 4244
Notes:
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.
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