CVE-2017-16100: Dns sync Command Injection Vulnerability

CRITICAL
Advisory Identifier: GHSA-jcw8-r9xm-32c6
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CWE-94
Published
Advisory Summary

CVE-2017-16100 is a CRITICAL command injection vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Dns sync libraries in the npm ecosystem. The issue involves command injection in dns-sync. Remediation is available by upgrading affected packages to version 0.1.1.

CVE-2017-16100 at a Glance

CVE Identifier CVE-2017-16100
GHSA Identifier GHSA-jcw8-r9xm-32c6
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Dns sync
Package Ecosystem npm
Published Date
Last Updated

How to Fix CVE-2017-16100

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

dns-sync fixed: 0.1.1 
npm install dns-sync@0.1.1
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 dns-sync

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2017-16100, inspect your project dependencies using npm:

npm ls dns-sync

Analyze the terminal output to locate any version of Dns sync in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.1.1), your application is affected.

Note: The npm ls dns-sync 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-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Dns sync, 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

Affected versions of `dns-sync` have an arbitrary command execution vulnerability in the `resolve()` method. ## Recommendation - Use an alternative dns resolver - Do not allow untrusted input into `dns-sync.resolve()`

CVE-2017-16100 Affected Dns sync Versions

1 component(s)
Fixed Versions:
0.1.1
Product / Package Ecosystem Affected Versions Fixed Version
dns-sync
npm/dns-sync
npm
< 0.1.1
0.1.1

References

NVD — CVE-2017-16100 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-16100
Dns sync Source Repository REPOSITORY
https://github.com/skoranga/node-dns-sync/issues/1
Dns sync Source Repository REPOSITORY
https://github.com/skoranga/node-dns-sync/issues/1)
Dns sync Source Repository REPOSITORY
https://github.com/skoranga/node-dns-sync/issues/5
Security Fix Commit FIX COMMIT
https://github.com/skoranga/node-dns-sync/commit/d9abaae384b198db1095735ad9c1c73d7b890a0d
Security Fix Commit FIX COMMIT
https://github.com/skoranga/node-dns-sync/commit/d9abaae384b198db1095735ad9c1c73d7b890a0d)))
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-jcw8-r9xm-32c6
www.npmjs.com/advisories/153 WEB
https://www.npmjs.com/advisories/153
www.npmjs.com/advisories/523 WEB
https://www.npmjs.com/advisories/523

Frequently Asked Questions

What is CVE-2017-16100?
CVE-2017-16100 is a security vulnerability in Dns sync involving Command Injection in dns-sync under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Dns sync versions are affected?
Affected versions include releases prior to 0.1.1 across affected packages: dns-sync.
What version fixes CVE-2017-16100?
Upgrading to 0.1.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is dns-sync affected?
Yes, dns-sync is affected in releases prior to 0.1.1. Upgrade your dependency to 0.1.1 or later.
What CWE is associated with CVE-2017-16100?
CVE-2017-16100 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check npm dependencies for CVE-2017-16100?
Run the dependency tree command: 'npm ls dns-sync'. 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-jcw8-r9xm-32c6",
  "modified" : "2020-08-31T18:26:20Z",
  "published" : "2018-07-18T18:28:02Z",
  "aliases" : [ "CVE-2017-16100" ],
  "summary" : "Command Injection in dns-sync",
  "details" : "Affected versions of `dns-sync` have an arbitrary command execution vulnerability in the `resolve()` method. \n\n\n\n## Recommendation\n\n- Use an alternative dns resolver\n- Do not allow untrusted input into `dns-sync.resolve()`",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "dns-sync"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.1.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-16100"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/skoranga/node-dns-sync/issues/1"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/skoranga/node-dns-sync/issues/1)"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/skoranga/node-dns-sync/issues/5"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/skoranga/node-dns-sync/commit/d9abaae384b198db1095735ad9c1c73d7b890a0d"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/skoranga/node-dns-sync/commit/d9abaae384b198db1095735ad9c1c73d7b890a0d)))"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-jcw8-r9xm-32c6"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/153"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/523"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:43:08Z",
    "nvd_published_at" : null
  }
}