RCE in Brettwooldridge Nuprocess
CVE-2022-39243
NuProcess is an external process execution implementation for Java. In all the versions of NuProcess where it forks processes by using the JVM's Java_java_lang_UNIXProcess_forkAndExec method (1.2.0+), attackers can use NUL characters in their strings to perform command line injection. Java's ProcessBuilder isn't vulnerable because of a check in ProcessBuilder.start. NuProcess is missing that check. This vulnerability can only be exploited to inject command line arguments on Linux. Version 2.0.5 contains a patch. As a workaround, users of the library can sanitize command strings to remove NUL characters prior to passing them to NuProcess for execution.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.016 (74.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.016 · change: +0.003
Affected products
- Brettwooldridge Nuprocess — versions >= 1.2.0, < 2.0.5
- Linux Kernel
- Nuprocess Project
Weakness classification (CWE)
References
- github.com/brettwooldridge/NuProcess/security/advisories/GHSA-cxgf-v2p8-7ph7 (Third Party Advisory)
- github.com/brettwooldridge/NuProcess/pull/143 (Exploit, Patch, Third Party Advisory)
- github.com/brettwooldridge/NuProcess/commit/29bc09de561bf00ff9bf77123756363a970… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-39243?
- CVE-2022-39243 is a high-severity vulnerability in Brettwooldridge Nuprocess, classified under Command Injection. CVSS score: 8.4/10. Published 2022-09-26.
- How severe is CVE-2022-39243?
- High severity. CVSS v3 base score is 8.4 out of 10.