cisco-sa-20180620-nx-os-fabric-services-dos: Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service 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 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. 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-nx-os-fabric-services-dos 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 Software | Affected Version | How 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<2.2(8m)=Prior to 2.2<2.2(8m) | 3.2(2b) 3.2(2b) 3.2(2b) 3.2(2b) 2.2(8m) 2.2(8m) |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is cisco-sa-20180620-nx-os-fabric-services-dos.
What is the title of the vulnerability?
The title of the vulnerability is Cisco FXOS and NX-OS Software Cisco Fabric Services Denial of Service Vulnerability.
What is the severity of the vulnerability?
The severity of the vulnerability is high, with a severity value of 8.6.
Which software versions are affected by the vulnerability?
The affected software versions are Cisco FXOS Software 2.2.2.17, 2.2.1.70, 2.1.1.86, 2.0.1.153, 1.1.4.179 and Cisco NX-OS Software 8.1(1a), 6.2(21), 3.2(2b).
How can I fix the vulnerability?
To fix the vulnerability, it is recommended to update the affected software versions to the remediation versions provided by Cisco.
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