XML External Entity injection in IBM App Connect Enterprise and IBM Integration Bus for z/OS

1) XML External Entity injection

EUVDB-ID: #VU86800

Risk: Low

CVSSv3.1: 4.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4218

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

Exploit availability: No

Description

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

The vulnerability exists due to some files with xml content are parsed vulnerable against all sorts of XXE attacks. A local user can trick the victim into opening a specially crafted XML code and view contents of arbitrary files on the system or initiate requests to external systems.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Integration Bus for z/OS: All versions

IBM App Connect Enterprise: before 11.0.0.24

CPE2.3

• cpe:2.3:a:ibm_corporation:integration_bus_for_z_os:*:*:*:*:*:*:*:
• cpe:2.3:a:ibm_corporation:ibm_app_connect_enterprise:*:*:*:*:*:*:*:

External links

http://www.ibm.com/support/pages/node/7122454

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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