Vulnerabilities in pkg:maven/com.zaxxer/nuprocess

PACKAGE
Advisory Identifier: GHSA-cxgf-v2p8-7ph7
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Advisory Summary

CVE-2022-39243 is a HIGH (CVSS 8.4) nuprocess vulnerable to command-line injection vulnerability (CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')) affecting Nuprocess libraries in the Maven ecosystem. The issue involves nuprocess vulnerable to command-line injection through insertion of nul character(s). Remediation is available by upgrading affected packages to version 2.0.5.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:maven/com.zaxxer/nuprocess

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:maven/com.zaxxer/nuprocess. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-cxgf-v2p8-7ph7 CVE-2022-39243 HIGH NuProcess vulnerable to command-line injection through insertion of NUL character(s)

CVE-2022-39243 at a Glance

CVE Identifier CVE-2022-39243
GHSA Identifier GHSA-cxgf-v2p8-7ph7
Severity HIGH
CVSS v3.1 Base Score 8.4
CWE Classification CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
Affected Product Nuprocess
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-39243

To remediate this vulnerability, upgrade all affected Nuprocess dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

com.zaxxer:nuprocess fixed: 2.0.5 
<dependency>
    <groupId>com.zaxxer</groupId>
    <artifactId>nuprocess</artifactId>
    <version>2.0.5</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=com.zaxxer

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2022-39243, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.zaxxer

Analyze the terminal output to locate any version of Nuprocess in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.5), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.zaxxer command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection'), where the product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. In Nuprocess, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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.

CVE-2022-39243 Affected Nuprocess Versions

1 component(s)
Fixed Versions:
2.0.5
Product / Package Ecosystem Affected Versions Fixed Version
com.zaxxer:nuprocess
maven/com.zaxxer/nuprocess
Maven
≥ 1.2.0
< 2.0.5
2.0.5

References

GitHub Advisory / Wiki ADVISORY
https://github.com/brettwooldridge/NuProcess/security/advisories/GHSA-cxgf-v2p8-7ph7
NVD — CVE-2022-39243 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-39243
Nuprocess Source Repository REPOSITORY
https://github.com/brettwooldridge/NuProcess/pull/143
Security Fix Commit FIX COMMIT
https://github.com/brettwooldridge/NuProcess/commit/29bc09de561bf00ff9bf77123756363a9709f868
Nuprocess Source Repository REPOSITORY
https://github.com/brettwooldridge/NuProcess

Frequently Asked Questions

What is CVE-2022-39243?
CVE-2022-39243 is a security vulnerability in Nuprocess involving NuProcess vulnerable to command-line injection through insertion of NUL character(s) under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection').
Which Nuprocess versions are affected?
Affected versions include releases prior to 2.0.5 across affected packages: com.zaxxer:nuprocess.
What version fixes CVE-2022-39243?
Upgrading to 2.0.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is nuprocess affected?
Yes, com.zaxxer:nuprocess is affected in releases prior to 2.0.5. Upgrade your dependency to 2.0.5 or later.
What is the CVSS score of CVE-2022-39243?
CVE-2022-39243 has a CVSS v3.1 base score of 8.4 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-39243?
CVE-2022-39243 is classified under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') (The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.).
How can I check Maven dependencies for CVE-2022-39243?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.zaxxer'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-cxgf-v2p8-7ph7",
  "modified" : "2022-09-30T04:29:11Z",
  "published" : "2022-09-30T04:29:11Z",
  "aliases" : [ "CVE-2022-39243" ],
  "summary" : "NuProcess vulnerable to command-line injection through insertion of NUL character(s)",
  "details" : "### Impact\nIn 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.\n\nThis vulnerability can only be exploited to inject command line arguments on Linux.\n- 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.\n- 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.\n\n### Patches\n2.0.5\n\n### Workarounds\nUsers of the library can sanitize command strings to remove NUL characters prior to passing them to NuProcess for execution.\n\n### References\nNone.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.zaxxer:nuprocess"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.2.0"
      }, {
        "fixed" : "2.0.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/brettwooldridge/NuProcess/security/advisories/GHSA-cxgf-v2p8-7ph7"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-39243"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/brettwooldridge/NuProcess/pull/143"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/brettwooldridge/NuProcess/commit/29bc09de561bf00ff9bf77123756363a9709f868"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/brettwooldridge/NuProcess"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-77" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-09-30T04:29:11Z",
    "nvd_published_at" : "2022-09-26T14:15:00Z"
  }
}