XXE in Apache Ivy

1) XML External Entity injection

EUVDB-ID: #VU79749

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-2022-46751

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Apache Ivy: 1.4.1 - 2.5.1

CPE2.3

• cpe:2.3:a:apache_foundation:ivy:2.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:ivy:2.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:ivy:2.4.0:*:*:*:*:*:*:*

External links

http://docs.oracle.com/en/java/javase/13/security/java-api-xml-processing-jaxp-security-guide.html#GUID-94ABC0EE-9DC8-44F0-84AD-47ADD5340477
http://gitbox.apache.org/repos/asf?p=ant-ivy.git;a=commit;h=2be17bc18b0e1d4123007d579e43ba1a4b6fab3d
http://lists.apache.org/thread/9gcz4xrsn8c7o9gb377xfzvkb8jltffr
http://ant.apache.org/
http://www.cve.org/CVERecord?id=CVE-2022-46751

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.