cisco-sa-20190828-nxos-fsip-dos: Cisco NX-OS Software Cisco Fabric Services over IP Denial of Service Vulnerability
First published: Wed Aug 28 2019(Updated: )
A vulnerability in the Cisco Fabric Services component of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause process crashes, which can result in a denial of service (DoS) condition on an affected system. The vulnerability is due to insufficient validation of TCP packets when processed by the Cisco Fabric Services over IP (CFSoIP) feature. An attacker could exploit this vulnerability by sending a malicious Cisco Fabric Services TCP packet to an affected device. A successful exploit could allow the attacker to cause process crashes, resulting in a device reload and a DoS condition. Note: There are three distribution methods that can be configured for Cisco Fabric Services. This vulnerability affects only distribution method CFSoIP, which is disabled by default. See the Details section for more information. 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-20190828-nxos-fsip-dos
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco NX-OS Software | =6.2<6.2(25)=5.2<6.2(25) | 6.2(25) 6.2(25) |
| Cisco NX-OS Software | ||
| Cisco NX-OS Software | =6.0(2)A8<6.0(2)A8(10)=Earlier than 6.0(2)A8<6.0(2)A8(10) | 6.0(2)A8(10) 6.0(2)A8(10) |
| Cisco NX-OS Software | =7.0(3)<7.0(3)F3(3c)1 | 7.0(3)F3(3c)1 |
| Cisco NX-OS Software | =7.1<7.1(5)N1(1b)=Earlier than 7.1<7.1(5)N1(1b) | 7.1(5)N1(1b) 7.1(5)N1(1b) |
| Cisco NX-OS Software | =4.0<4.0(2d)=3.2<3.2(3l)=Earlier than 3.2<3.2(3l) | 4.0(2d) 3.2(3l) 3.2(3l) |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is cisco-sa-20190828-nxos-fsip-dos.
What is the title of this vulnerability?
The title of this vulnerability is Cisco NX-OS Software Cisco Fabric Services over IP Denial of Service Vulnerability.
What is the severity of cisco-sa-20190828-nxos-fsip-dos?
The severity of cisco-sa-20190828-nxos-fsip-dos is 8.6 (High).
Which software versions are affected by cisco-sa-20190828-nxos-fsip-dos?
The affected software versions are Cisco NX-OS Software 6.2 up to but excluding 6.2(25), 5.2, 6.0(2)A8 up to but excluding 6.0(2)A8(10), 7.0(3) up to but excluding 7.0(3)F3(3c)1, and 7.1 up to but excluding 7.1(5)N1(1b).
How do I fix cisco-sa-20190828-nxos-fsip-dos?
To fix cisco-sa-20190828-nxos-fsip-dos, update to the Cisco NX-OS Software version 6.2(25), 6.0(2)A8(10), 7.0(3)F3(3c)1, or 7.1(5)N1(1b), depending on the affected software version.
- agent/type
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- collector/cisco-advisory
- source/Cisco
- agent/software-canonical-lookup
- agent/severity
- agent/title
- agent/weakness
- agent/references
- agent/tags
- agent/description
- agent/event
- vendor/cisco
- canonical/cisco nx-os software
- version/cisco nx-os software/6.2
- version/cisco nx-os software/5.2
- version/cisco nx-os software/6.0(2)a8
- version/cisco nx-os software/earlier than 6.0(2)a8
- version/cisco nx-os software/7.0(3)
- version/cisco nx-os software/7.1
- version/cisco nx-os software/earlier than 7.1
- version/cisco nx-os software/earlier than 6.2
- version/cisco nx-os software/4.0
- version/cisco nx-os software/3.2
- version/cisco nx-os software/earlier than 3.2