cisco-sa-ise-dos-JLh9TxBp: Cisco Identity Services Engine RADIUS Service Denial of Service Vulnerability

First published: Wed Mar 02 2022(Updated: )

A vulnerability in the RADIUS feature of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to cause the affected system to stop processing RADIUS packets. This vulnerability is due to improper handling of certain RADIUS requests. An attacker could exploit this vulnerability by attempting to authenticate to a network or a service where the access server is using Cisco ISE as the RADIUS server. A successful exploit could allow the attacker to cause Cisco ISE to stop processing RADIUS requests, causing authentication/authorization timeouts, which would then result in legitimate requests being denied access. Note: To recover the ability to process RADIUS packets, a manual restart of the affected Policy Service Node (PSN) is required. See the Details section for more information. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-dos-JLh9TxBp

Credit: This vulnerability was found during the resolution a Cisco TAC support case

Affected Software	Affected Version	How to fix
Cisco ISE Software	=3.1<3.1P1=3.0<3.0P5=2.7P2 and later<2.7P6>=2.2P17 and later=2.4P12 and later<=2.6P5 and later<2.6P111 (Target May 19, 2022)	3.1P1 3.0P5 2.7P6 2.6P111 (Target May 19, 2022)

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Reference Links

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-dos-JLh9TxBp (Advisory)

Child vulnerabilities

(Contains the following vulnerabilities)

CVE-2022-20756

agent/type
agent/first-publish-date
agent/last-modified-date
agent/softwarecombine
collector/cisco-advisory
source/Cisco
agent/software-canonical-lookup
agent/severity
agent/weakness
agent/title
agent/tags
agent/references
agent/author
agent/event
agent/description
vendor/cisco
canonical/cisco ise software
version/cisco ise software/3.1
version/cisco ise software/3.0
version/cisco ise software/2.7p2 and later
version/cisco ise software/2.2p17 and later
version/cisco ise software/2.4p12 and later
version/cisco ise software/2.6p5 and later

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