Vulnerabilities in pkg:npm/isomorphic-git

PACKAGE
Advisory Identifier: GHSA-fgxq-p49f-qw99
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Advisory Summary

CVE-2021-30483 is a MODERATE (CVSS 5.3) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Isomorphic git libraries in the npm ecosystem. The issue involves directory traversal in isomorphic-git. Remediation is available by upgrading affected packages to version 1.8.2.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:npm/isomorphic-git

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:npm/isomorphic-git. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-fgxq-p49f-qw99 CVE-2021-30483 MODERATE Directory Traversal in isomorphic-git

CVE-2021-30483 at a Glance

CVE Identifier CVE-2021-30483
GHSA Identifier GHSA-fgxq-p49f-qw99
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Isomorphic git
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:N/S:U/C:L/I:N/A:N).

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

How to Fix CVE-2021-30483

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

isomorphic-git fixed: 1.8.2 
npm install isomorphic-git@1.8.2
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 isomorphic-git

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2021-30483, inspect your project dependencies using npm:

npm ls isomorphic-git

Analyze the terminal output to locate any version of Isomorphic git in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.8.2), your application is affected.

Note: The npm ls isomorphic-git 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Isomorphic git, 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

isomorphic-git before 1.8.2 allows Directory Traversal via a crafted repository.

CVE-2021-30483 Affected Isomorphic git Versions

1 component(s)
Fixed Versions:
1.8.2
Product / Package Ecosystem Affected Versions Fixed Version
isomorphic-git
npm/isomorphic-git
npm
< 1.8.2
1.8.2

References

NVD — CVE-2021-30483 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30483
Isomorphic git Source Repository REPOSITORY
https://github.com/isomorphic-git/isomorphic-git/pull/1339
Isomorphic git Source Repository REPOSITORY
https://github.com/isomorphic-git/isomorphic-git
Isomorphic git Release RELEASE
https://github.com/isomorphic-git/isomorphic-git/releases/tag/v1.8.2
vuln.ryotak.me/advisories/28 WEB
https://vuln.ryotak.me/advisories/28

Frequently Asked Questions

What is CVE-2021-30483?
CVE-2021-30483 is a security vulnerability in Isomorphic git involving Directory Traversal in isomorphic-git under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Isomorphic git versions are affected?
Affected versions include releases prior to 1.8.2 across affected packages: isomorphic-git.
What version fixes CVE-2021-30483?
Upgrading to 1.8.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is isomorphic-git affected?
Yes, isomorphic-git is affected in releases prior to 1.8.2. Upgrade your dependency to 1.8.2 or later.
What is the CVSS score of CVE-2021-30483?
CVE-2021-30483 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2021-30483?
CVE-2021-30483 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check npm dependencies for CVE-2021-30483?
Run the dependency tree command: 'npm ls isomorphic-git'. 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-fgxq-p49f-qw99",
  "modified" : "2021-08-31T21:02:23Z",
  "published" : "2021-09-02T22:00:20Z",
  "aliases" : [ "CVE-2021-30483" ],
  "summary" : "Directory Traversal in isomorphic-git",
  "details" : "isomorphic-git before 1.8.2 allows Directory Traversal via a crafted repository.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "isomorphic-git"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.8.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-30483"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/isomorphic-git/isomorphic-git/pull/1339"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/isomorphic-git/isomorphic-git"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/isomorphic-git/isomorphic-git/releases/tag/v1.8.2"
  }, {
    "type" : "WEB",
    "url" : "https://vuln.ryotak.me/advisories/28"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-08-02T18:05:52Z",
    "nvd_published_at" : "2021-07-30T14:15:00Z"
  }
}