Input validation error in Cisco Systems, Inc products - CVE-2020-3170

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Main Vulnerability Database Vulnerabilities #VU25659

Input validation error in Cisco Systems, Inc products - CVE-2020-3170

Published: February 27, 2020


Vulnerability identifier: #VU25659
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3170
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect validation of the HTTP header of a request that is sent to the NX-API. A remote attacker can send a specially crafted HTTP request and cause a denial of service condition in the NX-API service.


Affected software

Cisco NX-OS
Cisco MDS 9000 Series Multilayer Switches
Cisco Nexus 7000 Series Switches

How to mitigate CVE-2020-3170

Install updates from vendor's website.

Cisco NX-OS - addressed in versions 8.2.5, 8.4.1

External References

Related Security Bulletins