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Cisco NX-OS: CVE-2022-20823: Cisco NX-OS Software OSPFv3 Denial of Service Vulnerability

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Cisco NX-OS: CVE-2022-20823: Cisco NX-OS Software OSPFv3 Denial of Service Vulnerability

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
08/26/2022
Created
08/29/2022
Added
08/26/2022
Modified
09/06/2022

Description

A vulnerability in the OSPF version 3 (OSPFv3) feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to incomplete input validation of specific OSPFv3 packets. An attacker could exploit this vulnerability by sending a malicious OSPFv3 link-state advertisement (LSA) to an affected device. A successful exploit could allow the attacker to cause the OSPFv3 process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition. Note: The OSPFv3 feature is disabled by default. To exploit this vulnerability, an attacker must be able to establish a full OSPFv3 neighbor state with an affected device. For more information about exploitation conditions, see the Details section of this advisory.

Solution(s)

  • update-nxos

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