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AUSCERT External Security Bulletin Redistribution
Cisco Nexus 4000 Series Switch Simple Network Management
Protocol Polling Denial of Service Vulnerability
21 June 2018
AusCERT Security Bulletin Summary
Product: Cisco Nexus 4000 Series
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Existing Account
CVE Names: CVE-2018-0299
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Cisco Security Advisory: Cisco Nexus 4000 Series Switch Simple Network
Management Protocol Polling Denial of Service Vulnerability
Advisory ID: cisco-sa-20180620-n4k-snmp-dos
For Public Release: 2018 June 20 16:00 GMT
Last Updated: 2018 June 20 16:00 GMT
CVE ID(s): CVE-2018-0299
CVSS Score v(3): 7.7 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
A vulnerability in the Simple Network Management Protocol (SNMP) feature of
the Cisco Nexus 4000 Series Switch could allow an authenticated, remote
attacker to cause the device to unexpectedly reload, resulting in a denial of
service (DoS) condition.
The vulnerability is due to incomplete validation of an SNMP poll request for
a specific MIB. An attacker could exploit this vulnerability by sending a
specific SNMP poll request to the targeted device. An exploit could allow the
attacker to cause the device to reload, resulting in a DoS condition.
Cisco has released software updates that address this vulnerability. There are
no workarounds that address this vulnerability.
This advisory is available at the following link:
This advisory is part of the June 2018 Cisco FXOS and NX-OS Software Security
Advisory Collection, which includes 24 Cisco Security Advisories that describe
24 vulnerabilities. For a complete list of the advisories and links to them,
see Cisco Event Response: June 2018 Cisco FXOS and NX-OS Software Security
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