CVE-2024-21536: Http proxy middleware Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-c7qv-q95q-8v27
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CVSS 7.5
CWE-400
Published
Advisory Summary

CVE-2024-21536 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Http proxy middleware libraries in the npm ecosystem. The issue involves denial of service in http-proxy-middleware. Remediation is available by upgrading affected packages to version 2.0.7, 3.0.3.

CVE-2024-21536 at a Glance

CVE Identifier CVE-2024-21536
GHSA Identifier GHSA-c7qv-q95q-8v27
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Http proxy middleware
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-2024-21536

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

http-proxy-middleware fixed: 2.0.7 
npm install http-proxy-middleware@2.0.7
http-proxy-middleware fixed: 3.0.3 
npm install http-proxy-middleware@3.0.3
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 http-proxy-middleware

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2024-21536, inspect your project dependencies using npm:

npm ls http-proxy-middleware

Analyze the terminal output to locate any version of Http proxy middleware in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.7), your application is affected.

Note: The npm ls http-proxy-middleware 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 Http proxy middleware, 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 the package http-proxy-middleware before 2.0.7, from 3.0.0 and before 3.0.3 are vulnerable to Denial of Service (DoS) due to an UnhandledPromiseRejection error thrown by micromatch. An attacker could kill the Node.js process and crash the server by making requests to certain paths.

CVE-2024-21536 Affected Http proxy middleware Versions

2 component(s)
Fixed Versions:
2.0.73.0.3
Product / Package Ecosystem Affected Versions Fixed Version
http-proxy-middleware
npm/http-proxy-middleware
npm
< 2.0.7
2.0.7
http-proxy-middleware
npm/http-proxy-middleware
npm
≥ 3.0.0
< 3.0.3
3.0.3

References

NVD — CVE-2024-21536 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-21536
Security Fix Commit FIX COMMIT
https://github.com/chimurai/http-proxy-middleware/commit/0b4274e8cc9e9a2c5a06f35fbf456ccfcebc55a5
Security Fix Commit FIX COMMIT
https://github.com/chimurai/http-proxy-middleware/commit/788b21e4aff38332d6319557d4a5b1b13b1f9a22
Http proxy middleware Source Repository REPOSITORY
https://gist.github.com/mhassan1/28be67266d82a53708ed59ce5dc3c94a
Http proxy middleware Source Repository REPOSITORY
https://github.com/chimurai/http-proxy-middleware
Http proxy middleware Security Information SECURITY
https://security.snyk.io/vuln/SNYK-JS-HTTPPROXYMIDDLEWARE-8229906

Frequently Asked Questions

What is CVE-2024-21536?
CVE-2024-21536 is a security vulnerability in Http proxy middleware involving Denial of service in http-proxy-middleware under CWE-400: Uncontrolled Resource Consumption.
Which Http proxy middleware versions are affected?
Affected versions include releases prior to 2.0.7, 3.0.3 across affected packages: http-proxy-middleware.
What version fixes CVE-2024-21536?
Upgrading to 2.0.7, 3.0.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is http-proxy-middleware affected?
Yes, http-proxy-middleware is affected in releases prior to 2.0.7, 3.0.3. Upgrade your dependency to 2.0.7, 3.0.3 or later.
What is the CVSS score of CVE-2024-21536?
CVE-2024-21536 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-2024-21536?
CVE-2024-21536 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-2024-21536?
Run the dependency tree command: 'npm ls http-proxy-middleware'. 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-c7qv-q95q-8v27",
  "modified" : "2024-10-22T19:47:41Z",
  "published" : "2024-10-19T06:30:30Z",
  "aliases" : [ "CVE-2024-21536" ],
  "summary" : "Denial of service in http-proxy-middleware",
  "details" : "Versions of the package http-proxy-middleware before 2.0.7, from 3.0.0 and before 3.0.3 are vulnerable to Denial of Service (DoS) due to an UnhandledPromiseRejection error thrown by micromatch. An attacker could kill the Node.js process and crash the server by making requests to certain paths.",
  "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" : "http-proxy-middleware"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.7"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "http-proxy-middleware"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.0.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-21536"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/chimurai/http-proxy-middleware/commit/0b4274e8cc9e9a2c5a06f35fbf456ccfcebc55a5"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/chimurai/http-proxy-middleware/commit/788b21e4aff38332d6319557d4a5b1b13b1f9a22"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/mhassan1/28be67266d82a53708ed59ce5dc3c94a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/chimurai/http-proxy-middleware"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-JS-HTTPPROXYMIDDLEWARE-8229906"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-10-22T19:47:41Z",
    "nvd_published_at" : "2024-10-19T05:15:13Z"
  }
}