Cisco NX-OS Software NX-API Denial of Service Vulnerability
A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an NX-API system process to unexpectedly restart. The vulnerability is due to incorrect validation of the HTTP header of a request that is sent to the NX-API. An attacker could exploit this vulnerability by sending a crafted HTTP request to the NX-API on an affected device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition in the NX-API service; however, the Cisco NX-OS device itself would still be available and passing network traffic. Note: The NX-API feature is disabled by default. 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-20200226-nxos-api-dos ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-api-dos"]
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2020-3170US | medium5.3 | — | ||
A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an NX-API system process to unexpectedly restart. The vulnera… | ||||
references
External citations — patches, advisories, analysis.
- Cisco Nexus 1000V for VMware Switchexternal
- Cisco Nexus 3000 Series Switchesexternal
- Cisco Nexus 5500 Platform Switchesexternal
- Cisco Nexus 6000 Series Switchesexternal
- Cisco Nexus 9000 Series Switchesexternal
- Cisco Nexus 7000 Series Switchesexternal
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-api-dosexternal
- Security Vulnerability Policyexternal
remediations (17)
- Fixed7.3(2)D1(1d)
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.1(1) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.1(1) when installed on Cisco Nexus 7000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.1(1a) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.1(1b) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.1(2) when installed on Cisco Nexus 7000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.1(2a) when installed on Cisco Nexus 7000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.2(1) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.2(1) when installed on Cisco Nexus 7000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.2(2) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.2(2) when installed on Cisco Nexus 7000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.2(3) when installed on Cisco Nexus 7000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.2(4) when installed on Cisco Nexus 7000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.3(1) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.3(1) when installed on Cisco Nexus 7000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.3(2) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco NX-OS Software 8.3(2) when installed on Cisco Nexus 7000 Series Switches
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan