description: A vulnerability in the data model interface (DMI) services of Cisco IOS XE Software could allow an unauthenticated, remote attacker to access resources that should have been protected by a configured IPv4 access control list (ACL).
This vulnerability is due to improper handling of error conditions when a successfully authorized device administrator updates an IPv4 ACL using the NETCONF or RESTCONF protocol, and the update would reorder access control entries (ACEs) in the updated ACL. An attacker could exploit this vulnerability by accessing resources that should have been protected across an affected device.
problem types: Detection of Error Condition Without Action
affected:
{
vendor: Cisco
product: Cisco IOS XE Software
versions:
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: 16.7.2, status: affected
version: 16.7.3, 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: 16.8.2, 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: 16.10.1e, status: affected
version: 16.10.2, 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: 16.12.2, 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: 16.12.1t, 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: 16.12.5a, status: affected
version: 16.12.5b, 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: 16.12.11, 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: 17.3.2a, 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: 17.3.8, status: affected
version: 17.3.8a, 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: 17.6.1a, status: affected
version: 17.6.3, status: affected
version: 17.6.3a, status: affected
version: 17.6.4, status: affected
version: 17.6.5, status: affected
version: 17.6.6, status: affected
version: 17.6.6a, 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: 17.9.2, status: affected
version: 17.9.1a, status: affected
version: 17.9.3, status: affected
version: 17.9.2a, status: affected
version: 17.9.3a, status: affected
version: 17.9.4, 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: 17.12.1a, status: affected
version: 17.12.2, status: affected
version: 17.12.2a, 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:L/A:N
baseScore: 5.8
baseSeverity: MEDIUM
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: NONE
integrityImpact: LOW
availabilityImpact: NONE
]
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.