#VU79653 Improper Neutralization of Null Byte or NUL Character in NuProcess - CVE-2022-39243

Vulnerability identifier: #VU79653

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-39243

CWE-ID: CWE-158

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
NuProcess
Universal components / Libraries / Programming Languages & Components

Vendor: brettwooldridge

Description

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

The vulnerability exists due to a missing check in ProcessBuilder.start. A remote unauthenticated attacker can use NUL characters in their strings to perform command line injection.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

NuProcess: 1.0.2 - 2.0.4

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External links
https://github.com/brettwooldridge/NuProcess/commit/29bc09de561bf00ff9bf77123756363a9709f868
https://github.com/brettwooldridge/NuProcess/security/advisories/GHSA-cxgf-v2p8-7ph7
https://github.com/brettwooldridge/NuProcess/pull/143

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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.