critical
10
CWE
20 119
Advisory Published
Updated

CVE-2018-0301: Input Validation

First published: Wed Jun 20 2018(Updated: )

A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to craft a packet to the management interface on an affected system, causing a buffer overflow. The vulnerability is due to incorrect input validation in the authentication module of the NX-API subsystem. An attacker could exploit this vulnerability by sending a crafted HTTP or HTTPS packet to the management interface of an affected system with the NX-API feature enabled. An exploit could allow the attacker to execute arbitrary code as root. Note: NX-API is disabled by default. This vulnerability affects: MDS 9000 Series Multilayer Switches, Nexus 2000 Series Fabric Extenders, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules. Cisco Bug IDs: CSCvd45804, CSCve02322, CSCve02412.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco NX-OS>=6.0<7.3\(3\)n1\(1\)
Cisco Nexus 5000 firmware
Cisco Nexus 5010
Cisco Nexus 5020
Cisco Nexus 5548P Firmware
Cisco Nexus 5548UP Firmware
Cisco Nexus 5596T Firmware
Cisco Nexus 5596UP Firmware
Cisco 56128p
Cisco Nexus 5624Q Firmware
Cisco Nexus 5648Q Firmware
Cisco Nexus 5672UP-16G
Cisco Nexus 5696Q Firmware
Cisco NX-OS>=7.2<7.3\(2\)d1\(1\)
Cisco NX-OS>=8.0<8.1\(1\)
Cisco NX-OS=8.1
Cisco NX-OS=8.2
Cisco NEXUS 7000 Series Switch
Cisco Nexus 7700 series
Cisco NX-OS<7.0\(3\)i4
Cisco NX-OS>=7.0\(3\)i5<7.0\(3\)i7\(1\)
Cisco NX-OS=7.0\(3\)i7
Cisco Nexus 92160YC Switch
Cisco Nexus 92304QC Switch
Cisco Nexus 9236C Switch
Cisco Nexus 9272Q Switch
Cisco Nexus
Cisco Nexus 93120TX Firmware
Cisco Nexus 93128 Firmware
Cisco Nexus 93180YC-EX-24
Cisco Nexus 9332PQ Firmware
Cisco Nexus 9372PX-E
Cisco Nexus 9372TX
Cisco Nexus 9396PX Firmware
Cisco Nexus 9396TX Firmware
Cisco Nexus 9504 firmware
Cisco Nexus 9508
Cisco Nexus 9516 firmware
Cisco Nexus 9508
Cisco x9636q-r
Cisco Nexus X9636Q-R
Cisco Nexus 172tq-xl
Cisco Nexus 3016Q Firmware
Cisco Nexus 3048 Firmware
Cisco Nexus 3064
Cisco Nexus 3064
Cisco Nexus 3064x
Cisco Nexus 3100V Firmware
Cisco Nexus 31128PQ
Cisco Nexus 3132C-Z Firmware
Cisco Nexus 3132Q-XL
Cisco Nexus 3132Q-X/3132Q-XL
Cisco Nexus 3132Q-XL Firmware
Cisco Nexus 3164Q Firmware
Cisco Nexus 3172PQ/PQ-XL
Cisco Nexus 3172PQ-XL Firmware
Cisco Nexus 3172TQ Firmware
Cisco Nexus 3172TQ-XL
Cisco Nexus 3232C
Cisco Nexus 3264C-E Firmware
Cisco Nexus 3264Q Firmware
Cisco Nexus 34180YC Firmware
Cisco Nexus 3524-xl
Cisco Nexus 3524-XL Firmware
Cisco Nexus 3548-X/XL Firmware
Cisco Nexus 3548-X/XL
Cisco Nexus 3548-X/XL
Cisco Nexus 3636C-R Firmware
Cisco Nexus 36180YC-R
Cisco NX-OS>=7.3<7.3\(3\)n1\(1\)
Cisco NX-OS=6.0
Cisco NX-OS=7.0
Cisco NX-OS=7.1
Cisco NX-OS=7.2
Cisco Nexus 6001P Firmware
Cisco Nexus 6001T Firmware
Cisco Nexus 9500 Series
Cisco NX-OS>=7.3<8.1\(1\)
Cisco NX-OS=5.2
Cisco NX-OS=6.2
Cisco MDS 9000 Series Multilayer Switches

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2018-0301?

    The severity of CVE-2018-0301 is rated as high due to its potential for exploitation causing a buffer overflow.

  • How do I fix CVE-2018-0301?

    To fix CVE-2018-0301, apply the recommended software updates from Cisco for affected NX-OS versions.

  • Which versions of Cisco NX-OS are affected by CVE-2018-0301?

    CVE-2018-0301 affects Cisco NX-OS versions prior to 7.3(3)N1(1) and certain versions between 6.0 and 8.1.

  • Can CVE-2018-0301 be exploited remotely?

    Yes, CVE-2018-0301 can be exploited by unauthenticated remote attackers targeting the management interface.

  • What are the potential consequences of CVE-2018-0301 exploitation?

    Exploitation of CVE-2018-0301 can lead to a denial of service condition on the affected system due to buffer overflow.

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