CVE-2014-4179: Yar Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-gg6m-fhqv-hg56
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CVSS 7.5
CWE-400
Published
Advisory Summary

CVE-2014-4179 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Yar libraries in the npm ecosystem. The issue involves denial of service in yar. Remediation is available by upgrading affected packages to version 2.2.0.

CVE-2014-4179 at a Glance

CVE Identifier CVE-2014-4179
GHSA Identifier GHSA-gg6m-fhqv-hg56
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Yar
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:N/I:N/A:H).

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 None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2014-4179

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

yar fixed: 2.2.0 
npm install yar@2.2.0
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 yar

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2014-4179, inspect your project dependencies using npm:

npm ls yar

Analyze the terminal output to locate any version of Yar in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.2.0), your application is affected.

Note: The npm ls yar 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Yar, 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

Versions of `yar` prior to 2.2.0 are affected by a denial of service vulnerability related to an invalid encrypted session cookie value. When an invalid encryped session cookie value is provided, the process will crash. ## Recommendation Update to version 2.2.0 or later.

CVE-2014-4179 Affected Yar Versions

1 component(s)
Fixed Versions:
2.2.0
Product / Package Ecosystem Affected Versions Fixed Version
yar
npm/yar
npm
< 2.2.0
2.2.0

References

NVD — CVE-2014-4179 NVD
https://nvd.nist.gov/vuln/detail/CVE-2014-4179
Yar Source Repository REPOSITORY
https://github.com/spumko/yar/issues/34
Yar Source Repository REPOSITORY
https://github.com/spumko/yar
www.npmjs.com/advisories/44 WEB
https://www.npmjs.com/advisories/44

Frequently Asked Questions

What is CVE-2014-4179?
CVE-2014-4179 is a security vulnerability in Yar involving Denial of Service in yar under CWE-400: Uncontrolled Resource Consumption.
Which Yar versions are affected?
Affected versions include releases prior to 2.2.0 across affected packages: yar.
What version fixes CVE-2014-4179?
Upgrading to 2.2.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is yar affected?
Yes, yar is affected in releases prior to 2.2.0. Upgrade your dependency to 2.2.0 or later.
What is the CVSS score of CVE-2014-4179?
CVE-2014-4179 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2014-4179?
CVE-2014-4179 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check npm dependencies for CVE-2014-4179?
Run the dependency tree command: 'npm ls yar'. 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-gg6m-fhqv-hg56",
  "modified" : "2021-09-23T21:04:51Z",
  "published" : "2020-09-01T15:15:36Z",
  "aliases" : [ "CVE-2014-4179" ],
  "summary" : "Denial of Service in yar",
  "details" : "Versions of `yar` prior to 2.2.0 are affected by a denial of service vulnerability related to an invalid encrypted session cookie value.\n\nWhen an invalid encryped session cookie value is provided, the process will crash.\n\n\n## Recommendation\n\nUpdate to version 2.2.0 or later.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "yar"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2014-4179"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/spumko/yar/issues/34"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/spumko/yar"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/44"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T18:09:03Z",
    "nvd_published_at" : null
  }
}