CVE-2022-39243 NuProcess vulnerable to command-line injection through insertion of NUL character(s)
Attackers can inject command-line arguments via NUL characters in NuProcess, potentially leading to code execution on Linux systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-39243?
CVE-2022-39243 is a high-severity command injection vulnerability in brettwooldridge NuProcess, published on 26 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-77
Which versions are affected by CVE-2022-39243?
2 open source packages ship an affected version, including com.zaxxer:nuprocess. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
com.zaxxer:nuprocess Maven | From 1.2.0 | 2.0.5 |
com.zaxxer:nuprocess Maven | From 1.2.0 | 2.0.5 |
Products include Nuprocess Project Nuprocess.
How do I fix CVE-2022-39243?
Upgrade com.zaxxer:nuprocess to 2.0.5 or later.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2022-39243 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-39243 exists.
Sources
Also known as GHSA-cxgf-v2p8-7ph7, UBUNTU-CVE-2022-39243.