cisco-sa-20180620-fxnxos-dos: Cisco FXOS and NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution Vulnerability
First published: Wed Jun 20 2018(Updated: )
A vulnerability in the Cisco Discovery Protocol component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code as root or cause a denial of service (DoS) condition on the affected device. The vulnerability exists because of insufficiently validated Cisco Discovery Protocol packet headers. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to a Layer 2 adjacent affected device. A successful exploit could allow the attacker to cause a buffer overflow that could allow the attacker to execute arbitrary code as root or cause a DoS condition on the affected 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-fxnxos-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 | =2.1<2.1.1.73=2.0<2.0.1.135=1.1<1.1.4.169 | 2.1.1.73 2.0.1.135 1.1.4.169 |
| Cisco NX-OS Software | ||
| Cisco NX-OS Software | =6.2<6.2(20) | 6.2(20) |
| Cisco NX-OS Software | =12.2 / 2.2<12.2(2e) / 2.2(2e)=12.1 / 2.1<12.2(2e) / 2.2(2e)=Prior to 12.1 / 2.1><12.2(2e) / 2.2(2e) | 12.2(2e) / 2.2(2e) 12.2(2e) / 2.2(2e) 12.2(2e) / 2.2(2e) |
| Cisco NX-OS Software | =3.1<3.1(3a)=3.0<3.1(3a)=2.5<3.1(3a)=2.2<3.1(3a)=Prior to 2.2<3.1(3a) | 3.1(3a) 3.1(3a) 3.1(3a) 3.1(3a) 3.1(3a) |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is cisco-sa-20180620-fxnxos-dos.
What is the severity of cisco-sa-20180620-fxnxos-dos?
The severity of cisco-sa-20180620-fxnxos-dos is high with a severity value of 7.5.
What is affected by cisco-sa-20180620-fxnxos-dos?
The Cisco FXOS Software and Cisco NX-OS Software are affected by cisco-sa-20180620-fxnxos-dos.
How can an attacker exploit cisco-sa-20180620-fxnxos-dos?
An attacker can exploit cisco-sa-20180620-fxnxos-dos by executing arbitrary code as root or causing a denial of service (DoS) condition on the affected device.
Where can I find more information about cisco-sa-20180620-fxnxos-dos?
You can find more information about cisco-sa-20180620-fxnxos-dos at the following link: [Cisco Security Advisory cisco-sa-20180620-fxnxos-dos](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180620-fxnxos-dos).
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- canonical/cisco fxos software
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- version/cisco fxos software/2.0
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- version/cisco nx-os software/12.2 / 2.2
- version/cisco nx-os software/12.1 / 2.1
- version/cisco nx-os software/prior to 12.1 / 2.1>
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- version/cisco nx-os software/prior to 2.2