Detections
Analytics
Cisco Identity Services Engine RADIUS DoS (cisco-sa-ise-radius-dos-W7cNn7gt)
high Nessus Plugin ID 181007
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Synopsis
The remote device is missing a vendor-supplied security patch.Description
According to its self-reported version, Cisco Identity Services Engine RADIUS Denial of Service is affected by a vulnerability in the RADIUS message processing feature of Cisco Identity Services Engine (ISE), that 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 accounting requests. An attacker could exploit this vulnerability by sending a crafted authentication request to a network access device (NAD) that uses Cisco ISE for authentication, authorization, and accounting (AAA). This would eventually result in the NAD sending a RADIUS accounting request packet to Cisco ISE.An attacker could also exploit this vulnerability by sending a crafted RADIUS accounting request packet to Cisco ISE directly if the RADIUS shared secret is known. A successful exploit could allow the attacker to cause the RADIUS process to unexpectedly restart, resulting in authentication or authorization timeouts and denying legitimate users access to the network or service. Clients already authenticated to the network would not be affected. Note: To recover the ability to process RADIUS packets, a manual restart of the affected Policy Service Node (PSN) may be required.
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCwe47081See Also
Plugin Details
Severity: High
ID: 181007
File Name: cisco-sa-ise-radius-dos-W7cNn7gt.nasl
Version: 1.4
Type: combined
Family: CISCO
Published: 9/7/2023
Updated: 9/25/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2023-20243
CVSS v3
Risk Factor: High
Base Score: 8.6
Temporal Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/h:cisco:identity_services_engine, cpe:/a:cisco:identity_services_engine, cpe:/a:cisco:identity_services_engine_software
Required KB Items: Host/Cisco/ISE/version
Exploit Ease: No known exploits are available
Patch Publication Date: 9/6/2023
Vulnerability Publication Date: 9/6/2023
Reference Information
CVE: CVE-2023-20243