XXE in Cisco Identity Services Engine

1) XML External Entity injection

EUVDB-ID: #VU71743

Risk: Low

CVSSv3.1: 3.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-20030

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote user with valid Super Admin or Policy Admin credentials can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Identity Services Engine (ISE): before 3.2.0.542 Patch1

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xxe-inj-GecEHY58
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCwd10864

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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