Denial of service in Cisco Identity Services Engine (ISE)

1) Resource exhaustion

EUVDB-ID: #VU68957

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-20937

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources in a feature that monitors RADIUS requests. A remote attacker can send specially crafted RADIUS traffic, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Identity Services Engine (ISE): 2.6 - 3.1P3

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_identity_services_engine:2.6:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_identity_services_engine:2.6P1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_identity_services_engine:2.6P2:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-sec-atk-dos-zw5RCUYp
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz99311

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.