Input validation error in Cisco Nexus 9000 Series Switches in ACI Mode - CVE-2021-1230

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Main Vulnerability Database Vulnerabilities #VU50939

Input validation error in Cisco Nexus 9000 Series Switches in ACI Mode - CVE-2021-1230

Published: February 25, 2021


Vulnerability identifier: #VU50939
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-1230
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Nexus 9000 Series Switches in ACI Mode

Detailed vulnerability description

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

The vulnerability exists due to an issue with the installation of routes upon receipt of the Border Gateway Protocol (BGP) update. A remote attacker can send a specially crafted BGP update to the affected device and perform a denial of service (DoS) attack.


How to mitigate CVE-2021-1230

Install updates from vendor's website.

Sources