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 psirt@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Catalyst 4500-X Series Switches | ||
| All of | ||
| Any of | ||
| Cisco IOS | =3.6\(2\)e | |
| Cisco IOS XE Software | =3.6\(2\)e | |
| Any of | ||
| Cisco Catalyst 4500-X Series Switches | ||
| 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 | ||
| Cisco Catalyst 4500E Supervisor Engine 9-E (k10) | ||
| Cisco Catalyst 4900M Switch | ||
| Cisco Catalyst 4948E Ethernet Switch | ||
| All of | ||
| Any of | ||
| Cisco IOS | =3.6\(2\)e | |
| Cisco IOS XE Software | =3.6\(2\)e | |
| Rockwell Automation Allen-Bradley Stratix 8300 Industrial Managed Ethernet Switch | ||
| Cisco IOS | =3.6\(2\)e | |
| Cisco IOS XE Software | =3.6\(2\)e | |
| Cisco Catalyst 4500-X Series Switches | ||
| 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 | ||
| Cisco Catalyst 4500E Supervisor Engine 9-E (k10) | ||
| Cisco Catalyst 4900M Switch | ||
| Cisco Catalyst 4948E Ethernet Switch | ||
| Rockwell Automation Allen-Bradley Stratix 8300 Industrial Managed Ethernet Switch |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2018-0155?
CVE-2018-0155 has been classified with a high severity rating due to its potential to cause denial of service.
How do I fix CVE-2018-0155?
To fix CVE-2018-0155, upgrade to the upgraded software version provided by Cisco that addresses this vulnerability.
Which devices are affected by CVE-2018-0155?
CVE-2018-0155 affects Cisco Catalyst 4500 Series and Catalyst 4500-X Series Switches running specific versions of Cisco IOS and IOS XE.
What kind of attack can exploit CVE-2018-0155?
CVE-2018-0155 can be exploited by an unauthenticated, remote attacker to crash the iosd process.
What is the impact of CVE-2018-0155 on network operations?
The impact of CVE-2018-0155 is a denial of service that can disrupt network operations on affected Cisco devices.
- agent/weakness
- agent/type
- agent/description
- agent/title
- agent/severity
- agent/first-publish-date
- agent/references
- agent/event
- collector/mitre-cve
- source/MITRE
- agent/source
- agent/author
- agent/last-modified-date
- exploited/true
- collector/cisa-known-exploited
- source/CISA
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- agent/softwarecombine
- agent/tags
- collector/nvd-cve
- source/NVD
- collector/nvd-api
- collector/nvd-index
- vendor/cisco
- canonical/cisco catalyst 4500-x series switches
- canonical/cisco ios
- version/cisco ios/3.6\(2\)e
- canonical/cisco ios xe software
- version/cisco ios xe software/3.6\(2\)e
- canonical/cisco catalyst 4500 supervisor engine 6-e (k5)
- canonical/cisco catalyst 4500 supervisor engine 6l-e (k10)
- canonical/cisco catalyst 4500 supervisor engine 7-e (k10)
- canonical/cisco catalyst 4500 supervisor engine 7l-e (k10)
- canonical/cisco catalyst 4500e supervisor engine 8-e (k10)
- canonical/cisco catalyst 4500e supervisor engine 8l-e
- canonical/cisco catalyst 4500e supervisor engine 9-e (k10)
- canonical/cisco catalyst 4900m switch
- canonical/cisco catalyst 4948e ethernet switch
- vendor/rockwellautomation
- canonical/rockwell automation allen-bradley stratix 8300 industrial managed ethernet switch