National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-0456 Detail

Current Description

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco NX-OS Software could allow an authenticated, remote attacker to cause the SNMP application of an affected device to restart unexpectedly. The vulnerability is due to improper validation of SNMP protocol data units (PDUs) in SNMP packets. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device. A successful exploit could allow the attacker to cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.7 HIGH
Vector: AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H (V3 legend)
Impact Score: 4.0
Exploitability Score: 3.1


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

CVSS v2.0 Severity and Metrics:

Base Score: 6.8 MEDIUM
Vector: (AV:N/AC:L/Au:S/C:N/I:N/A:C) (V2 legend)
Impact Subscore: 6.9
Exploitability Subscore: 8.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): Single
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/105668 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1041921 Third Party Advisory VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-nxos-snmp Vendor Advisory

Technical Details

Vulnerability Type (View All)

  • Improper Input Validation (CWE-20)

Known Affected Software Configurations Switch to CPE 2.3

Configuration 1 ( hide )
 cpe:/o:cisco:nx-os:9.2%280.43%29
     Show Matching CPE(s)


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-0456
NVD Published Date:
10/17/2018
NVD Last Modified:
01/30/2019