Code Injection in IBM CICS TX Standard

1) Code Injection

EUVDB-ID: #VU60834

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-23450

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can inject and execute arbitrary script code via the setObject function.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM CICS TX Standard: 11.1

External links

http://www.ibm.com/blogs/psirt/security-bulletin-ibm-cics-tx-standard-is-vulnerable-to-arbitrary-code-execution-due-to-ibm-websphere-application-server-liberty-cve-2021-23450/
http://www.ibm.com/support/pages/node/6590935

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.