National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-0155 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 8.6 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H (V3 legend)
Impact Score: 4.0
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/103565 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040587 Third Party Advisory VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05 Third Party Advisory US Government Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-bfd Vendor Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:cisco:ios:3.6\(2\)e:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:cisco:ios_xe:3.6\(2\)e:*:*:*:*:*:*:*
     Show Matching CPE(s)
Running on/with
 cpe:2.3:h:cisco:catalyst_4500-x_series_switches_\(k10\):-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:catalyst_4500_supervisor_engine_6-e_\(k5\):-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:catalyst_4500_supervisor_engine_6l-e_\(k10\):-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:catalyst_4500_supervisor_engine_7-e_\(k10\):-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:catalyst_4500_supervisor_engine_7l-e_\(k10\):-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:catalyst_4500e_supervisor_engine_8-e_\(k10\):-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:catalyst_4500e_supervisor_engine_8l-e_\(k10\):-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:catalyst_4500e_supervisor_engine_9-e_\(k10\):-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:catalyst_4900m_switch_\(k5\):-:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:h:cisco:catalyst_4948e_ethernet_switch_\(k5\):-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:cisco:ios:3.6\(2\)e:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:cisco:ios_xe:3.6\(2\)e:*:*:*:*:*:*:*
     Show Matching CPE(s)
Running on/with
 cpe:2.3:h:rockwellautomation:allen-bradley_stratix_8300_industrial_managed_ethernet_switch:-:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-0155
NVD Published Date:
03/28/2018
NVD Last Modified:
04/24/2018