Exploited
8.6
CWE
755 388
Advisory Published
Updated

CVE-2018-0155: Cisco Catalyst Bidirectional Forwarding Detection Denial-of-Service Vulnerability

First published: Wed Mar 28 2018(Updated: )

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. The vulnerability is due to insufficient error handling when the BFD header in a BFD packet is incomplete. An attacker could exploit this vulnerability by sending a crafted BFD message to or across an affected switch. A successful exploit could allow the attacker to trigger a reload of the system. This vulnerability affects Catalyst 4500 Supervisor Engine 6-E (K5), Catalyst 4500 Supervisor Engine 6L-E (K10), Catalyst 4500 Supervisor Engine 7-E (K10), Catalyst 4500 Supervisor Engine 7L-E (K10), Catalyst 4500E Supervisor Engine 8-E (K10), Catalyst 4500E Supervisor Engine 8L-E (K10), Catalyst 4500E Supervisor Engine 9-E (K10), Catalyst 4500-X Series Switches (K10), Catalyst 4900M Switch (K5), Catalyst 4948E Ethernet Switch (K5). Cisco Bug IDs: CSCvc40729.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco IOS=3.6\(2\)e
Cisco IOS XE=3.6\(2\)e
Cisco Catalyst 4500-x Series Switches \(k10\)
Cisco Catalyst 4500 Supervisor Engine 6-e \(k5\)
Cisco Catalyst 4500 Supervisor Engine 6l-e \(k10\)
Cisco Catalyst 4500 Supervisor Engine 7-e \(k10\)
Cisco Catalyst 4500 Supervisor Engine 7l-e \(k10\)
Cisco Catalyst 4500e Supervisor Engine 8-e \(k10\)
Cisco Catalyst 4500e Supervisor Engine 8l-e \(k10\)
Cisco Catalyst 4500e Supervisor Engine 9-e \(k10\)
Cisco Catalyst 4900m Switch \(k5\)
Cisco Catalyst 4948e Ethernet Switch \(k5\)
Rockwellautomation Allen-bradley Stratix 8300 Industrial Managed Ethernet Switch
Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches
All of
Any of
Cisco IOS=3.6\(2\)e
Cisco IOS XE=3.6\(2\)e
Any of
Cisco Catalyst 4500-x Series Switches \(k10\)
Cisco Catalyst 4500 Supervisor Engine 6-e \(k5\)
Cisco Catalyst 4500 Supervisor Engine 6l-e \(k10\)
Cisco Catalyst 4500 Supervisor Engine 7-e \(k10\)
Cisco Catalyst 4500 Supervisor Engine 7l-e \(k10\)
Cisco Catalyst 4500e Supervisor Engine 8-e \(k10\)
Cisco Catalyst 4500e Supervisor Engine 8l-e \(k10\)
Cisco Catalyst 4500e Supervisor Engine 9-e \(k10\)
Cisco Catalyst 4900m Switch \(k5\)
Cisco Catalyst 4948e Ethernet Switch \(k5\)
All of
Any of
Cisco IOS=3.6\(2\)e
Cisco IOS XE=3.6\(2\)e
Rockwellautomation Allen-bradley Stratix 8300 Industrial Managed Ethernet Switch

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