title: Cisco IOS and IOS XE Software ISDN Interface Denial of Service Vulnerability
description: A vulnerability in the ISDN functions of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect processing of specific values in the Q.931 information elements. An attacker could exploit this vulnerability by calling the affected device with specific Q.931 information elements being present. An exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device.
problem types: CWE-20
affected:
{
product: Cisco IOS and IOS XE Software
vendor: Cisco
versions:
status: affected, version: 3.8.0S
status: affected, version: 3.8.1S
status: affected, version: 3.8.2S
status: affected, version: 3.9.1S
status: affected, version: 3.9.0S
status: affected, version: 3.9.2S
status: affected, version: 3.9.1aS
status: affected, version: 3.9.0aS
status: affected, version: 3.10.0S
status: affected, version: 3.10.1S
status: affected, version: 3.10.2S
status: affected, version: 3.10.3S
status: affected, version: 3.10.4S
status: affected, version: 3.10.5S
status: affected, version: 3.10.6S
status: affected, version: 3.10.2aS
status: affected, version: 3.10.2tS
status: affected, version: 3.10.7S
status: affected, version: 3.10.8S
status: affected, version: 3.10.8aS
status: affected, version: 3.10.9S
status: affected, version: 3.10.10S
status: affected, version: 3.11.1S
status: affected, version: 3.11.2S
status: affected, version: 3.11.0S
status: affected, version: 3.11.3S
status: affected, version: 3.11.4S
status: affected, version: 3.12.0S
status: affected, version: 3.12.1S
status: affected, version: 3.12.2S
status: affected, version: 3.12.3S
status: affected, version: 3.12.0aS
status: affected, version: 3.12.4S
status: affected, version: 3.13.0S
status: affected, version: 3.13.1S
status: affected, version: 3.13.2S
status: affected, version: 3.13.3S
status: affected, version: 3.13.4S
status: affected, version: 3.13.5S
status: affected, version: 3.13.2aS
status: affected, version: 3.13.5aS
status: affected, version: 3.13.6S
status: affected, version: 3.13.7S
status: affected, version: 3.13.6aS
status: affected, version: 3.13.6bS
status: affected, version: 3.13.7aS
status: affected, version: 3.13.8S
status: affected, version: 3.13.9S
status: affected, version: 3.13.10S
status: affected, version: 3.14.0S
status: affected, version: 3.14.1S
status: affected, version: 3.14.2S
status: affected, version: 3.14.3S
status: affected, version: 3.14.4S
status: affected, version: 3.15.0S
status: affected, version: 3.15.1S
status: affected, version: 3.15.2S
status: affected, version: 3.15.1cS
status: affected, version: 3.15.3S
status: affected, version: 3.15.4S
status: affected, version: 3.16.0S
status: affected, version: 3.16.1S
status: affected, version: 3.16.1aS
status: affected, version: 3.16.2S
status: affected, version: 3.16.0bS
status: affected, version: 3.16.0cS
status: affected, version: 3.16.3S
status: affected, version: 3.16.2bS
status: affected, version: 3.16.4aS
status: affected, version: 3.16.4bS
status: affected, version: 3.16.4gS
status: affected, version: 3.16.5S
status: affected, version: 3.16.4cS
status: affected, version: 3.16.4dS
status: affected, version: 3.16.4eS
status: affected, version: 3.16.6S
status: affected, version: 3.16.5aS
status: affected, version: 3.16.5bS
status: affected, version: 3.16.7S
status: affected, version: 3.16.6bS
status: affected, version: 3.16.7aS
status: affected, version: 3.16.7bS
status: affected, version: 3.16.8S
status: affected, version: 3.17.0S
status: affected, version: 3.17.1S
status: affected, version: 3.17.2S
status: affected, version: 3.17.1aS
status: affected, version: 3.17.3S
status: affected, version: 3.17.4S
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: 16.3.6
status: affected, version: 16.3.7
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: 16.5.1b
status: affected, version: 16.5.2
status: affected, version: 16.5.3
status: affected, version: 3.18.0aS
status: affected, version: 3.18.1S
status: affected, version: 3.18.0SP
status: affected, version: 3.18.1SP
status: affected, version: 3.18.1aSP
status: affected, version: 3.18.2aSP
status: affected, version: 3.18.3SP
status: affected, version: 3.18.4SP
status: affected, version: 3.18.3aSP
status: affected, version: 3.18.3bSP
status: affected, version: 3.18.5SP
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: 16.6.4s
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: 16.8.1
status: affected, version: 16.8.1s
status: affected, version: 16.8.1d
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 8.6
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
version: 3.0
]
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.