netVigilance Vulnerability intelligence since 2004
CVE-2018-0155 · netVigilance record NV22-0143

Cisco Catalyst Bidirectional Forwarding Detection Denial-of-Service

past due

What to do

Apply updates per vendor instructions.

CISA deadline 2022-03-17 · passed 4 years 5 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

A vulnerability in the Bidirectional Forwarding Detection (BFD) offload implementation of Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to cause a crash of the iosd process, causing a denial-of-service (DoS) condition.

Who is affected

Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Weakness class: CWE-388.

Timeline

  1. Added to CISA KEVExploitation in the wild confirmed by CISA
  2. CISA remediation deadlinepassed 4 years 5 months ago

Sources