CVE Vulnerabilities

CVE-2021-1230

Published: Feb 24, 2021 | Modified: Nov 07, 2023
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
7.1 HIGH
AV:N/AC:M/Au:N/C:N/I:N/A:C
RedHat/V2
RedHat/V3
Ubuntu

A vulnerability with the Border Gateway Protocol (BGP) for Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, remote attacker to cause a routing process to crash, which could lead to a denial of service (DoS) condition. This vulnerability is due to an issue with the installation of routes upon receipt of a BGP update. An attacker could exploit this vulnerability by sending a crafted BGP update to an affected device. A successful exploit could allow the attacker to cause the routing process to crash, which could cause the device to reload. This vulnerability applies to both Internal BGP (IBGP) and External BGP (EBGP). Note: The Cisco implementation of BGP accepts incoming BGP traffic from explicitly configured peers only. To exploit this vulnerability, an attacker would need to send a specific BGP update message over an established TCP connection that appears to come from a trusted BGP peer.

Affected Software

Name Vendor Start Version End Version
Nx-os Cisco 12.0(1m) 12.0(1m)
Nx-os Cisco 12.0(1n) 12.0(1n)
Nx-os Cisco 12.0(1o) 12.0(1o)
Nx-os Cisco 12.0(1p) 12.0(1p)
Nx-os Cisco 12.0(1q) 12.0(1q)
Nx-os Cisco 12.0(1r) 12.0(1r)
Nx-os Cisco 12.0(2f) 12.0(2f)
Nx-os Cisco 12.0(2g) 12.0(2g)
Nx-os Cisco 12.0(2h) 12.0(2h)
Nx-os Cisco 12.0(2l) 12.0(2l)
Nx-os Cisco 12.0(2m) 12.0(2m)
Nx-os Cisco 12.0(2n) 12.0(2n)
Nx-os Cisco 12.0(2o) 12.0(2o)
Nx-os Cisco 12.1(1h) 12.1(1h)
Nx-os Cisco 12.1(1i) 12.1(1i)
Nx-os Cisco 12.1(2e) 12.1(2e)
Nx-os Cisco 12.1(2g) 12.1(2g)
Nx-os Cisco 12.1(2k) 12.1(2k)
Nx-os Cisco 12.1(3g) 12.1(3g)
Nx-os Cisco 12.1(3h) 12.1(3h)
Nx-os Cisco 12.1(3j) 12.1(3j)
Nx-os Cisco 12.1(4a) 12.1(4a)
Nx-os Cisco 12.2(1k) 12.2(1k)
Nx-os Cisco 12.2(1n) 12.2(1n)
Nx-os Cisco 12.2(1o) 12.2(1o)
Nx-os Cisco 12.2(2e) 12.2(2e)
Nx-os Cisco 12.2(2f) 12.2(2f)
Nx-os Cisco 12.2(2i) 12.2(2i)
Nx-os Cisco 12.2(2j) 12.2(2j)
Nx-os Cisco 12.2(2k) 12.2(2k)
Nx-os Cisco 12.2(2q) 12.2(2q)
Nx-os Cisco 12.2(3j) 12.2(3j)
Nx-os Cisco 12.2(3p) 12.2(3p)
Nx-os Cisco 12.2(3r) 12.2(3r)
Nx-os Cisco 12.2(3s) 12.2(3s)
Nx-os Cisco 12.2(3t) 12.2(3t)
Nx-os Cisco 12.2(4f) 12.2(4f)
Nx-os Cisco 12.2(4p) 12.2(4p)
Nx-os Cisco 12.2(4q) 12.2(4q)
Nx-os Cisco 12.2(4r) 12.2(4r)
Nx-os Cisco 12.3(1e) 12.3(1e)
Nx-os Cisco 12.3(1f) 12.3(1f)
Nx-os Cisco 12.3(1i) 12.3(1i)
Nx-os Cisco 12.3(1l) 12.3(1l)
Nx-os Cisco 12.3(1o) 12.3(1o)
Nx-os Cisco 12.3(1p) 12.3(1p)
Nx-os Cisco 13.0(1k) 13.0(1k)
Nx-os Cisco 13.0(2h) 13.0(2h)
Nx-os Cisco 13.0(2k) 13.0(2k)
Nx-os Cisco 13.0(2n) 13.0(2n)
Nx-os Cisco 13.1(1i) 13.1(1i)
Nx-os Cisco 13.1(2m) 13.1(2m)
Nx-os Cisco 13.1(2o) 13.1(2o)
Nx-os Cisco 13.1(2p) 13.1(2p)
Nx-os Cisco 13.1(2q) 13.1(2q)
Nx-os Cisco 13.1(2s) 13.1(2s)
Nx-os Cisco 13.1(2t) 13.1(2t)
Nx-os Cisco 13.1(2u) 13.1(2u)
Nx-os Cisco 13.1(2v) 13.1(2v)
Nx-os Cisco 13.2(1l) 13.2(1l)
Nx-os Cisco 13.2(1m) 13.2(1m)
Nx-os Cisco 13.2(2l) 13.2(2l)
Nx-os Cisco 13.2(2o) 13.2(2o)
Nx-os Cisco 13.2(3i) 13.2(3i)
Nx-os Cisco 13.2(3j) 13.2(3j)
Nx-os Cisco 13.2(3n) 13.2(3n)
Nx-os Cisco 13.2(3o) 13.2(3o)
Nx-os Cisco 13.2(3r) 13.2(3r)
Nx-os Cisco 13.2(3s) 13.2(3s)
Nx-os Cisco 13.2(4d) 13.2(4d)
Nx-os Cisco 13.2(4e) 13.2(4e)
Nx-os Cisco 13.2(5d) 13.2(5d)
Nx-os Cisco 13.2(5e) 13.2(5e)
Nx-os Cisco 13.2(5f) 13.2(5f)
Nx-os Cisco 13.2(6i) 13.2(6i)
Nx-os Cisco 13.2(7f) 13.2(7f)
Nx-os Cisco 13.2(7k) 13.2(7k)
Nx-os Cisco 13.2(8d) 13.2(8d)
Nx-os Cisco 13.2(9b) 13.2(9b)
Nx-os Cisco 13.2(9f) 13.2(9f)
Nx-os Cisco 13.2(9h) 13.2(9h)
Nx-os Cisco 13.2(41d) 13.2(41d)
Nx-os Cisco 14.0(1h) 14.0(1h)
Nx-os Cisco 14.0(2c) 14.0(2c)
Nx-os Cisco 14.0(3c) 14.0(3c)
Nx-os Cisco 14.0(3d) 14.0(3d)
Nx-os Cisco 14.1(1i) 14.1(1i)
Nx-os Cisco 14.1(1j) 14.1(1j)
Nx-os Cisco 14.1(1k) 14.1(1k)
Nx-os Cisco 14.1(1l) 14.1(1l)
Nx-os Cisco 14.1(2g) 14.1(2g)
Nx-os Cisco 14.1(2m) 14.1(2m)
Nx-os Cisco 14.1(2o) 14.1(2o)
Nx-os Cisco 14.1(2s) 14.1(2s)
Nx-os Cisco 14.1(2u) 14.1(2u)
Nx-os Cisco 14.1(2w) 14.1(2w)
Nx-os Cisco 14.1(2x) 14.1(2x)
Nx-os Cisco 14.2(1i) 14.2(1i)
Nx-os Cisco 14.2(1j) 14.2(1j)
Nx-os Cisco 14.2(1l) 14.2(1l)
Nx-os Cisco 14.2(2e) 14.2(2e)
Nx-os Cisco 14.2(2f) 14.2(2f)
Nx-os Cisco 14.2(2g) 14.2(2g)

References