#VU67029 Error Handling in OpenJ9 - CVE-2021-41041

Vulnerability identifier: #VU67029

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-41041

CWE-ID: CWE-388

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenJ9
Server applications / Virtualization software

Vendor: Eclipse

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to Java versions 8 and 11 fail to throw the exception captured during bytecode verification when verification is triggered by a MethodHandle invocation. A remote attacker can invoke unverified methods using MethodHandles and bypass implemented security restrictions.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenJ9: 0.0M1 - 0.32.0-m1a

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External links
https://bugs.eclipse.org/bugs/show_bug.cgi?id=579744
https://github.com/eclipse-openj9/openj9/pull/14935

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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.