CVE-2022-20756
Cisco ISE RADIUS Denial of Service Vulnerability
Description
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.
INFO
Published Date :
April 6, 2022, 7:15 p.m.
Last Modified :
Nov. 7, 2023, 3:42 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2022-20756 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-20756.
| URL | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-dos-JLh9TxBp | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
test 反向辣鸡数据投放 CVE-2022-23305 工具 利用 教程 Exploit POC
cve-2020-
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-20756 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-20756 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Removed CVSS V3 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H -
Initial Analysis by [email protected]
Apr. 14, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-dos-JLh9TxBp No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-dos-JLh9TxBp Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:cisco:identity_services_engine:2.2.0:patch17:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch12:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch13:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.4.0:patch14:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch10:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch5:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch6:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch7:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch8:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.6.0:patch9:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch2:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch3:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.7.0:patch4:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:2.7.0.356:patch1:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.0.0:-:*:*:*:*:*:* *cpe:2.3:a:cisco:identity_services_engine:3.1:-:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-20756 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-20756
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} 0.00%
score
0.50617
percentile