critical
9.8
CWE
20 119
Advisory Published

cisco-sa-20180620-fxnxos-fab-ace: Cisco FXOS and NX-OS Software Cisco Fabric Services Arbitrary Code Execution Vulnerability

First published: Wed Jun 20 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 execute arbitrary code or cause a denial of service (DoS) condition. The vulnerability exists because the affected software insufficiently validates header values in Cisco Fabric Services packets. An attacker could exploit this vulnerability by sending a crafted Cisco Fabric Services packet to an affected device. A successful exploit could allow the attacker to cause a buffer overflow that could allow the attacker to execute arbitrary code or cause 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: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-fxnxos-fab-ace 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 Advisory Collection.

Affected SoftwareAffected VersionHow to fix
Cisco FXOS Software=2.2.2<2.2.2.17=2.2.1<2.2.1.70=2.1.1<2.1.1.86=2.0<2.0.1.153=1.1<1.1.4.179
2.2.2.17
2.2.1.70
2.1.1.86
2.0.1.153
1.1.4.179
Cisco NX-OS Software=8.1<8.1(1a)=7.3<8.1(1a)=6.2<6.2(21)=5.2<6.2(21)
8.1(1a)
8.1(1a)
6.2(21)
6.2(21)
Cisco NX-OS Software
Cisco NX-OS Software=6.2<6.2(20)
6.2(20)
Cisco NX-OS Software=3.2<3.2(2b)=3.1<3.2(2b)=3.0<3.2(2b)=2.5<3.2(2b)=2.2<3.2(2b)=Prior to 2.2<3.2(2b)
3.2(2b)
3.2(2b)
3.2(2b)
3.2(2b)
3.2(2b)
3.2(2b)

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of cisco-sa-20180620-fxnxos-fab-ace?

    The severity of cisco-sa-20180620-fxnxos-fab-ace is critical.

  • How can an attacker exploit cisco-sa-20180620-fxnxos-fab-ace?

    An attacker can exploit cisco-sa-20180620-fxnxos-fab-ace by executing arbitrary code or causing a denial of service (DoS) condition.

  • What software versions are affected by cisco-sa-20180620-fxnxos-fab-ace?

    The affected software versions for cisco-sa-20180620-fxnxos-fab-ace are: Cisco FXOS Software versions 2.2.2 up to and including 2.2.2.17, Cisco NX-OS Software versions 8.1 up to and including 8.1(1a), and Cisco NX-OS Software versions 6.2 up to and including 6.2(21).

  • How can I fix cisco-sa-20180620-fxnxos-fab-ace?

    To fix cisco-sa-20180620-fxnxos-fab-ace, upgrade to the appropriate fixed version: 2.2.2.18 or later for Cisco FXOS Software, 8.3 or later for Cisco NX-OS Software, or 6.2(22) or later for Cisco NX-OS Software.

  • Where can I find more information about cisco-sa-20180620-fxnxos-fab-ace?

    You can find more information about cisco-sa-20180620-fxnxos-fab-ace at the Cisco Security Advisory: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-fxnxos-fab-ace

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