Cisco Catalyst Bidirectional Forwarding Detection Denial-of-Service
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
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 4 years 5 months ago
Sources
- NVD entry for CVE-2018-0155 nvd.nist.gov/vuln/detail/CVE-2018-0155
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2018-0155