high
7.8
CWE
399 119
Advisory Published
Updated

CVE-2018-0311: Buffer Overflow

First published: Thu Jun 21 2018(Updated: )

A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability exists because the affected software insufficiently validates Cisco Fabric Services packets when the software processes packet data. An attacker could exploit this vulnerability by sending a maliciously crafted Cisco Fabric Services packet to an affected device. A successful exploit could allow the attacker to cause a buffer overflow condition on the device, which could cause process crashes and result in a DoS condition on the device. This vulnerability affects Firepower 4100 Series Next-Generation Firewalls, Firepower 9300 Security Appliance, 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, UCS 6100 Series Fabric Interconnects, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCvd69960, CSCve02463, CSCve04859, CSCve41530, CSCve41537, CSCve41541, CSCve41557.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco NX-OS=7.0\(0\)hsk\(0.357\)
Cisco NX-OS=8.1\(0.2\)s0
Cisco NX-OS=8.8\(0.1\)
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=8.0\(1\)
Cisco Nexus 7000 Series Switch
Cisco Nexus 7700 Series Switch
Cisco NX-OS=8.8\(3.5\)s0
Cisco Nexus 92160YC Switch
Cisco Nexus 92304QC Firmware
Cisco Nexus 9236C
Cisco Nexus 9272Q Switch
Cisco Nexus
Cisco Nexus 93120TX Firmware
Cisco Nexus 93128TX
Cisco Nexus 93180YC-EX-24
Cisco Nexus 9332PQ Firmware
Cisco Nexus 9372PX-E
Cisco Nexus 9372TX Firmware
Cisco Nexus 9396PX Firmware
Cisco Nexus 9396TX Firmware
Cisco Nexus 9504 Firmware
Cisco Nexus 9508
Cisco Nexus 9516 firmware
Cisco Nexus 9000 Series Switches
Cisco x9636q-r
Cisco Nexus X9636Q-R
Cisco NX-OS=6.0\(2\)a8\(9\)
Cisco NX-OS=7.0\(3\)i4\(7\)
Cisco NX-OS=7.0\(3\)i6\(2\)
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-X/XL
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\(3\)n1\(1\)
Cisco Nexus 2148T FEX Switch
Cisco Nexus 2224TP FEX Switch
Cisco Nexus 2232pp fex switch
Cisco Nexus 2232TM-E 10GE
Cisco Nexus 2232TM-E 10GE
Cisco Nexus 2248PQ 10GE
Cisco Nexus 2248TP FEX Switch
Cisco Nexus 2248TP FEX Switch
Cisco Nexus 6001P Firmware
Cisco Nexus 6001T Firmware
Cisco NX-OS<3.2\(b\)
Cisco UCS 6120XP
Cisco UCS 6120XP
Cisco UCS 6248UP Firmware
Cisco UCS 6296UP Firmware
Cisco UCS 6324 Firmware
Cisco UCS 6332
Cisco Firepower Extensible Operating System>=1.1<1.1.4.179
Cisco Firepower Extensible Operating System>=2.0<2.0.1.153
Cisco Firepower Extensible Operating System>=2.1.1<2.1.1.86
Cisco Firepower Extensible Operating System>=2.2.1<2.2.1.70
Cisco Firepower Extensible Operating System>=2.2.2<2.2.2.17
Cisco Firepower 4110 Next-Generation Firewall
Cisco Firepower 4120 Next-Generation Firewall
Cisco Firepower 4140 Next-Generation Firewall
Cisco Firepower 4150 Next-Generation Firewall
Cisco Firepower 9300 Security Appliances

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.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2018-0311?

    CVE-2018-0311 has a severity rating of high due to its potential to enable denial of service (DoS) attacks.

  • How do I fix CVE-2018-0311?

    To fix CVE-2018-0311, update your Cisco NX-OS or FXOS Software to the latest version that is not affected by this vulnerability.

  • What systems are affected by CVE-2018-0311?

    CVE-2018-0311 affects specific versions of Cisco NX-OS Software including 7.0(0)hsk(0.357), 8.1(0.2)s0, and 8.8(0.1), among others.

  • Can CVE-2018-0311 cause long-term damage to my network devices?

    While CVE-2018-0311 can cause temporary denial of service conditions, it does not cause permanent damage to the affected devices.

  • Who can exploit CVE-2018-0311?

    CVE-2018-0311 can be exploited by unauthenticated, remote attackers who perform a specific sequence of actions to trigger the vulnerability.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203