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GHSA-cxgf-v2p8-7ph7

HighCVSS 8.4 / 10
Published Sep 30, 2022·Last modified Nov 8, 2023
Affected Components(0)

No affected components available

Description

Impact

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.

  • On macOS, any argument with a NUL character is truncated at that character. This means the malicious arguments are never seen by the started process.
  • On Windows, the entire command line is truncated at the first NUL character. This means the malicious arguments, and any intentional arguments provided after them, are never seen by the started process.

Patches

2.0.5

Workarounds

Users of the library can sanitize command strings to remove NUL characters prior to passing them to NuProcess for execution.

References

None.

Risk Scores
Base Score
8.4

The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
7.7

Exploitation activity has been observed. Apply available patches or mitigations urgently.

EPSS
1.22%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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