XML entity expansion in IBM Application Performance Management

1) XML Entity Expansion

EUVDB-ID: #VU49517

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

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 Cloud Application Performance Management (APM): before 8.1.4.0.20

CPE2.3

• cpe:2.3:a:ibm_corporation:apm:*:*:*:*:*:*:*:

External links

http://www.ibm.com/support/pages/node/7004599

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.