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Cisco Bug: CSCus50662 - Cisco Headend Denial of Service (DOS) Vulnerability

Last Modified

Aug 06, 2018

Products (1)

  • Headend System Releases

Known Affected Releases


Description (partial)

A vulnerability in the Transmission Control Protocol (TCP) module of the Cisco Headend System 
product could allow an unauthenticated, remote attacker to disable TCP ports and cause an increase 
in Central Processing Unit (CPU) and memory usage when the TCP connection is closing. 

The vulnerability is due to a lack of rate limiting in the TCP application. An attacker could exploit this 
vulnerability by when sending a flood of packets or denial-of-service (DOS) traffic stream. An exploit 
could allow the attacker to block TCP ports and exhaust system resources like CPU and memory when 
TCP connections are closing down.

Device running with default configuration running an affected version of software.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
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