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Cisco Bug: CSCuo04569 - SSTE: LLDP agent crash when sending malformed MA TLV

Last Modified

Nov 15, 2018

Products (3)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco NCS 6008 - 8-Slot Chassis
  • Cisco IOS XR Software

Known Affected Releases

5.1.1.BASE 5.2.0.BASE

Description (partial)

Symptoms:
A vulnerability in Link Layer Discovery Protocol (LLDP) in Cisco IOS XR could allow an unauthenticated, adjacent attacker to cause a partial
denial of service on the affected device.

The vulnerability is due to incorrect handling of malformed LLDP packets. An attacker could exploit this vulnerability by sending a malformed
LLDP packet destined to a switch when LLDP is enabled on an affected device.

Conditions:
Device configured with default configuration.
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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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