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.
Metrics
No CVSS v4.0
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Changed
Confidentiality Impact None
Integrity Impact None
Availability Impact High
User Interaction None
No CVSS v3.0
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
AV:N/AC:M/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
Exploitation none
Automatable yes
Technical Impact partial
Affected Vendors & Products
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Cisco |
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Configuration 1 [-]
AND |
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No data.
References
History
Sat, 09 Nov 2024 00:15:00 +0000
Type | Values Removed | Values Added |
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Metrics |
ssvc
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MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2021-02-24T19:30:30.975897Z
Updated: 2024-11-08T23:39:28.825Z
Reserved: 2020-11-13T00:00:00
Link: CVE-2021-1230
Vulnrichment
Updated: 2024-08-03T16:02:56.062Z
NVD
Status : Modified
Published: 2021-02-24T20:15:12.817
Modified: 2024-11-21T05:43:53.000
Link: CVE-2021-1230
Redhat
No data.