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Cisco Bug: CSCum03269 - WLC crashing on task emwebauth1 : webauthProcessAsyncResponse

Last Modified

Jul 01, 2016

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases

7.5(102.0) 7.5(102.11) 7.6(100.0)

Description (partial)

A vulnerability in the wireless web authentication subsystem of Cisco Wireless LAN controller devices could allow an unauthenticated, adjacent attacker to cause a denial of 
service (DoS) condition.

The vulnerability exists due to improper input sanitization of a certain value that is supplied by a user prior to successfully authenticating to an affected device.  An attacker could 
leverage this vulnerability by sending a request designed trigger the issue and cause a process crash that will trigger a restart of the device.

Cisco Wireless LAN Controller devices running versions 7.5.x or versions prior to 7.6.120.
Versions 7.4.x.x and lower, and, 8.x, etc and higher are not affected
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Bug Details Include

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