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Port 20031 Details
known port assignments and vulnerabilities
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 20031 |
tcp,udp |
applications |
Sony Bravia TV service may open TCP port 20031.
npvmgr.exe in BakBone NetVault Backup 8.22 Build 29 allows remote attackers to cause a denial of service (daemon crash) via a packet to TCP/UDP port 20031 with a large value in an unspecified size field, which is not properly handled in a malloc operation.
References: [CVE-2009-3448] [BID-36489]
Heap-based buffer overflow in the demo version of Bakbone Netvault, and possibly other versions, allows remote attackers to execute arbitrary commands via a large packet to port 20031.
References: [CVE-2005-1547]
NetVault is vulnerable to a stack-based buffer overflow caused by improper bounds checking of user-supplied input in the processing of the configure.cfg file. By creating a specially-crafted computername 'Name=' entry containing more than 111 bytes, a local attacker with access to the configure.cfg file, could overflow a buffer and execute arbitrary code on the system with SYSTEM level privileges, once the NetVault Process Manager restarts.
Note: A remote attacker could also exploit this vulnerability by connecting to port 20031 and sending a specially-crafted clientname entry in the Available NetVault Machines list to overflow a buffer and execute arbitrary code on the system.
References: [XFDB-19932], [CVE-2005-1009], [BID-12966], [BID-12967] |
SG
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| 20031 |
tcp,udp |
applications |
Multi Theft Auto |
Portforward
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| 20031 |
udp |
bakbonenetvault |
BakBone NetVault primary communications port |
Nmap
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| 20000-21000 |
udp |
applications |
Ground Control |
Portforward
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| 20000-21000 |
udp |
applications |
Ground Control with Chat Rooms |
Portforward
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| 20015-20033 |
tcp,udp |
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Unassigned |
IANA
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6 records found
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External Resources
SANS ISC: port 20031
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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