description: A vulnerability in the IPv4 Software-Defined Access (SD-Access) fabric edge node feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause high CPU utilization and stop all traffic processing, resulting in a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper handling of certain IPv4 packets. An attacker could exploit this vulnerability by sending certain IPv4 packets to an affected device. A successful exploit could allow the attacker to cause the device to exhaust CPU resources and stop processing traffic, resulting in a DoS condition.
problem types: Operator Precedence Logic Error
affected:
{
vendor: Cisco
product: Cisco IOS XE Software
versions:
version: 16.1.1, status: affected
version: 16.1.2, status: affected
version: 16.1.3, status: affected
version: 16.2.1, status: affected
version: 16.2.2, status: affected
version: 16.3.1, status: affected
version: 16.3.2, status: affected
version: 16.3.3, status: affected
version: 16.3.1a, status: affected
version: 16.3.4, status: affected
version: 16.3.5, status: affected
version: 16.3.5b, status: affected
version: 16.3.6, status: affected
version: 16.3.7, status: affected
version: 16.3.8, status: affected
version: 16.3.9, status: affected
version: 16.3.10, status: affected
version: 16.3.11, status: affected
version: 16.4.1, status: affected
version: 16.4.2, status: affected
version: 16.4.3, status: affected
version: 16.5.1, status: affected
version: 16.5.1a, status: affected
version: 16.5.1b, status: affected
version: 16.5.2, status: affected
version: 16.5.3, status: affected
version: 16.6.1, status: affected
version: 16.6.2, status: affected
version: 16.6.3, status: affected
version: 16.6.4, status: affected
version: 16.6.5, status: affected
version: 16.6.4a, status: affected
version: 16.6.5a, status: affected
version: 16.6.6, status: affected
version: 16.6.7, status: affected
version: 16.6.8, status: affected
version: 16.6.9, status: affected
version: 16.6.10, status: affected
version: 16.7.1, status: affected
version: 16.7.1a, status: affected
version: 16.7.1b, status: affected
version: 16.7.2, status: affected
version: 16.7.3, status: affected
version: 16.7.4, status: affected
version: 16.8.1, status: affected
version: 16.8.1a, status: affected
version: 16.8.1b, status: affected
version: 16.8.1s, status: affected
version: 16.8.1c, status: affected
version: 16.8.1d, status: affected
version: 16.8.2, status: affected
version: 16.8.1e, status: affected
version: 16.8.3, status: affected
version: 16.9.1, status: affected
version: 16.9.2, status: affected
version: 16.9.1a, status: affected
version: 16.9.1b, status: affected
version: 16.9.1s, status: affected
version: 16.9.3, status: affected
version: 16.9.4, status: affected
version: 16.9.3a, status: affected
version: 16.9.5, status: affected
version: 16.9.5f, status: affected
version: 16.9.6, status: affected
version: 16.9.7, status: affected
version: 16.9.8, status: affected
version: 16.10.1, status: affected
version: 16.10.1a, status: affected
version: 16.10.1b, status: affected
version: 16.10.1s, status: affected
version: 16.10.1c, status: affected
version: 16.10.1e, status: affected
version: 16.10.1d, status: affected
version: 16.10.2, status: affected
version: 16.10.1f, status: affected
version: 16.10.1g, status: affected
version: 16.10.3, status: affected
version: 16.11.1, status: affected
version: 16.11.1a, status: affected
version: 16.11.1b, status: affected
version: 16.11.2, status: affected
version: 16.11.1s, status: affected
version: 16.12.1, status: affected
version: 16.12.1s, status: affected
version: 16.12.1a, status: affected
version: 16.12.1c, status: affected
version: 16.12.1w, status: affected
version: 16.12.2, status: affected
version: 16.12.1y, status: affected
version: 16.12.2a, status: affected
version: 16.12.3, status: affected
version: 16.12.8, status: affected
version: 16.12.2s, status: affected
version: 16.12.1x, status: affected
version: 16.12.1t, status: affected
version: 16.12.4, status: affected
version: 16.12.3s, status: affected
version: 16.12.3a, status: affected
version: 16.12.4a, status: affected
version: 16.12.5, status: affected
version: 16.12.6, status: affected
version: 16.12.1z1, status: affected
version: 16.12.5a, status: affected
version: 16.12.5b, status: affected
version: 16.12.1z2, status: affected
version: 16.12.6a, status: affected
version: 16.12.7, status: affected
version: 16.12.9, status: affected
version: 16.12.10, status: affected
version: 16.12.10a, status: affected
version: 17.1.1, status: affected
version: 17.1.1a, status: affected
version: 17.1.1s, status: affected
version: 17.1.1t, status: affected
version: 17.1.3, status: affected
version: 17.2.1, status: affected
version: 17.2.1r, status: affected
version: 17.2.1a, status: affected
version: 17.2.1v, status: affected
version: 17.2.2, status: affected
version: 17.2.3, status: affected
version: 17.3.1, status: affected
version: 17.3.2, status: affected
version: 17.3.3, status: affected
version: 17.3.1a, status: affected
version: 17.3.1w, status: affected
version: 17.3.2a, status: affected
version: 17.3.1x, status: affected
version: 17.3.1z, status: affected
version: 17.3.4, status: affected
version: 17.3.5, status: affected
version: 17.3.4a, status: affected
version: 17.3.6, status: affected
version: 17.3.4b, status: affected
version: 17.3.4c, status: affected
version: 17.3.5a, status: affected
version: 17.3.5b, status: affected
version: 17.3.7, status: affected
version: 17.4.1, status: affected
version: 17.4.2, status: affected
version: 17.4.1a, status: affected
version: 17.4.1b, status: affected
version: 17.4.2a, status: affected
version: 17.5.1, status: affected
version: 17.5.1a, status: affected
version: 17.6.1, status: affected
version: 17.6.2, status: affected
version: 17.6.1w, status: affected
version: 17.6.1a, status: affected
version: 17.6.1x, status: affected
version: 17.6.3, status: affected
version: 17.6.1y, status: affected
version: 17.6.1z, status: affected
version: 17.6.3a, status: affected
version: 17.6.4, status: affected
version: 17.6.1z1, status: affected
version: 17.6.5, status: affected
version: 17.6.5a, status: affected
version: 17.7.1, status: affected
version: 17.7.1a, status: affected
version: 17.7.1b, status: affected
version: 17.7.2, status: affected
version: 17.10.1, status: affected
version: 17.10.1a, status: affected
version: 17.10.1b, status: affected
version: 17.8.1, status: affected
version: 17.8.1a, status: affected
version: 17.9.1, status: affected
version: 17.9.1w, status: affected
version: 17.9.2, status: affected
version: 17.9.1a, status: affected
version: 17.9.1x, status: affected
version: 17.9.1y, status: affected
version: 17.9.3, status: affected
version: 17.9.2a, status: affected
version: 17.9.1x1, status: affected
version: 17.9.3a, status: affected
version: 17.9.4, status: affected
version: 17.9.1y1, status: affected
version: 17.9.4a, status: affected
version: 17.11.1, status: affected
version: 17.11.1a, status: affected
version: 17.12.1, status: affected
version: 17.12.1w, status: affected
version: 17.12.1a, status: affected
version: 17.11.99SW, status: affected
}
metrics:
format: cvssV3_1
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
baseScore: 8.6
baseSeverity: HIGH
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: NONE
integrityImpact: NONE
availabilityImpact: HIGH
]
exploits: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.