CVE-2022-20823

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.

CVSS 3.1

8.6 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS

1.10% probability · 64th percentile

CISA KEV

Not listed

Weakness

CWE-126, CWE-125

Affected

cisco/nexus 3016 firmware · cisco/nexus 3016q firmware · cisco/nexus 3048 firmware · cisco/nexus 3064 firmware · cisco/nexus 3064-32t firmware · cisco/nexus 3064-t firmware · cisco/nexus 3064-x firmware · cisco/nexus 3064t firmware · cisco/nexus 3064x firmware · cisco/nexus 3100 firmware · cisco/nexus 3100-v firmware · cisco/nexus 3100-z firmware · cisco/nexus 3100v firmware · cisco/nexus 31108pc-v firmware · cisco/nexus 31108pv-v firmware · cisco/nexus 31108tc-v firmware · cisco/nexus 31128pq firmware · cisco/nexus 3132c-z firmware · cisco/nexus 3132q firmware · cisco/nexus 3132q-v firmware · +40 more

Source

psirt@cisco.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.