XML Entity Expansion in IBM Sterling B2B Integrator

1) XML Entity Expansion

EUVDB-ID: #VU49517

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-23926

CWE-ID: CWE-776 - Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to improper input validation when processing XML data. A remote attacker can pass specially crafted XML data to the application and perform XML Entity Expansion attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Sterling B2B Integrator: 5.2.0.0 - 6.1.0.2

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_sterling_b2b_integrator:5.2.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_sterling_b2b_integrator:6.0.3.4:*:*:*:*:*:*:*
• cpe:2.3:a:ibm_corporation:ibm_sterling_b2b_integrator:6.1.0.2:*:*:*:*:*:*:*

External links

https://www.ibm.com/support/pages/node/6495963

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.