XML entity expansion in XMLBeans



Published: 2021-01-14
Risk High
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2021-23926
CWE ID CWE-776
Exploitation vector Network
Public exploit N/A
Vulnerable software
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XMLBeans
Universal components / Libraries / Libraries used by multiple products

Vendor Apache Foundation

Security Advisory

This security advisory describes one high risk vulnerability.

1) XML Entity Expansion

Risk: High

CVSSv3: 8.5 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

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 updates from vendor's website.

Vulnerable software versions

XMLBeans: 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 2.0.0, 2.1.0, 2.2.0, 2.3.0, 2.4.0, 2.6.0

CPE External links

http://seclists.org/oss-sec/2021/q1/38
https://issues.apache.org/jira/browse/XMLBEANS-517

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.