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Port 6503 Details
known port assignments and vulnerabilities
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 6503 |
tcp,udp |
boks_clntd |
BoKS Clntd
Multiple Computer Associates products are vulnerable to a heap and stack-based buffer overflow, caused by improper bounds checking within the Message Engine RPC service (msgeng.exe). By sending a specially-crafted request to TCP port 6503, a remote attacker could overflow a buffer and execute arbitrary code on the system with SYSTEM privileges.
Multiple buffer overflows in CA BrightStor ARCserve Backup r11.5 SP1 and earlier, r11.1, and 9.01; BrightStor ARCserve Backup for Windows r11; BrightStor Enterprise Backup 10.5; Server Protection Suite r2; and Business Protection Suite r2 allow remote attackers to execute arbitrary code via crafted data on TCP port 6071 to the Backup Agent RPC Server (DBASVR.exe) using the RPC routines with opcode (1) 0x01, (2) 0x02, or (3) 0x18; invalid stub data on TCP port 6503 to the RPC routines with opcode (4) 0x2b or (5) 0x2d in ASCORE.dll in the Message Engine RPC Server (msgeng.exe); (6) a long hostname on TCP port 41523 to ASBRDCST.DLL in the Discovery Service (casdscsvc.exe); or unspecified vectors related to the (7) Job Engine Service.
References: [CVE-2006-5143] [BID-20365] [SECUNIA-22285]
Netop Business Solutions - NetOp School (IANA official) |
SG
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| 6503 |
tcp |
boks-clntd |
"BoKS Clntd |
IANA
|
| 6503 |
tcp,udp |
boks_clntd |
BoKS Clntd |
IANA
|
| 6503 |
udp |
boks-clntd |
"BoKS Clntd |
IANA
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4 records found
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Related ports: 6500 6501 6502 6505 6506 6507 6508
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External Resources
SANS ISC: port 6503
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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