#VU49916 Stack-based buffer overflow

Published: 2021-01-21 | Updated: 2021-01-21

Vulnerability identifier: #VU49916

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-27221


Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Server applications / Virtualization software

Vendor: Eclipse


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when the virtual machine or JNI natives are converting from UTF-8 characters to platform encoding. A remote unauthenticated attacker can trigger a stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Install updates from vendor's website.

Vulnerable software versions

OpenJ9: 0.20.0, 0.20.0-m1, 0.20.0-m2, 0.21.0, 0.21.0-m1, 0.21.0-m2, 0.22.0, 0.22.0-m1, 0.22.0-m2, 0.23.0, 0.23.0-m1, 0.23.0-m2


External links

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.

Latest bulletins with this vulnerability