Improper access control in Eclipse Openj9

1) Improper access control

EUVDB-ID: #VU60083

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-2021-41035

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. The JVM does not throw IllegalAccessError for MethodHandles that invoke inaccessible interface methods. A remote attacker can send a request to a non-public method and gain unauthorized access to the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

OpenJ9: 0.0 - 0.29.0-m2a

External links

http://github.com/eclipse-openj9/openj9/pull/13740
http://gitlab.eclipse.org/eclipsefdn/emo-team/emo/-/issues/104
http://bugs.eclipse.org/bugs/show_bug.cgi?id=576395

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.