CVE-2021-34081: Gitsome OS Command Injection Vulnerability

HIGH
Advisory Identifier: GHSA-9v73-x562-wv5x
Share
CVSS 8.8
CWE-78
Published
Advisory Summary

CVE-2021-34081 is a HIGH (CVSS 8.8) os command injection vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Gitsome libraries in the npm ecosystem. The issue involves os command injection in gitsome. Remediation is available in the latest vendor maintenance releases.

CVE-2021-34081 at a Glance

CVE Identifier CVE-2021-34081
GHSA Identifier GHSA-9v73-x562-wv5x
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Gitsome
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.8

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

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

How to Fix CVE-2021-34081

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

gitsome fixed: Latest secure release 
npm install gitsome@Latest secure release
Verify Direct and Transitive Dependencies

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

npm ls gitsome

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2021-34081, inspect your project dependencies using npm:

npm ls gitsome

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

Note: The npm ls gitsome command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), where the product constructs all or part of an os command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended os command when it is sent to a downstream component. In Gitsome, 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

OS Command Injection vulnerability in bbultman gitsome through 0.2.3 allows attackers to execute arbitrary commands via a crafted tag name of the target git repository.

CVE-2021-34081 Affected Gitsome Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
gitsome
npm/gitsome
npm
≤ 0.2.3

References

NVD — CVE-2021-34081 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-34081
advisory.checkmarx.net/advisory/cx-2021-47... WEB
https://advisory.checkmarx.net/advisory/CX-2021-4780
www.npmjs.com/package/gitsome WEB
https://www.npmjs.com/package/gitsome

Frequently Asked Questions

What is CVE-2021-34081?
CVE-2021-34081 is a security vulnerability in Gitsome involving OS Command Injection in gitsome under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Gitsome versions are affected?
Affected versions include releases prior to current release patches across affected packages: gitsome.
What version fixes CVE-2021-34081?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is gitsome affected?
Yes, gitsome is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2021-34081?
CVE-2021-34081 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2021-34081?
CVE-2021-34081 is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.).
How can I check npm dependencies for CVE-2021-34081?
Run the dependency tree command: 'npm ls gitsome'. 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-9v73-x562-wv5x",
  "modified" : "2022-06-15T19:45:01Z",
  "published" : "2022-06-03T00:00:58Z",
  "aliases" : [ "CVE-2021-34081" ],
  "summary" : "OS Command Injection in gitsome",
  "details" : "OS Command Injection vulnerability in bbultman gitsome through 0.2.3 allows attackers to execute arbitrary commands via a crafted tag name of the target git repository.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "gitsome"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.2.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-34081"
  }, {
    "type" : "WEB",
    "url" : "https://advisory.checkmarx.net/advisory/CX-2021-4780"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/package/gitsome"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-06-03T22:09:24Z",
    "nvd_published_at" : "2022-06-02T14:15:00Z"
  }
}