GHSA-6x33-pw7p-hmpq: Http proxy Denial of Service Vulnerability

HIGH
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CVSS 7.5
CWE-693 CWE-184
Published
Advisory Summary

GHSA-6x33-pw7p-hmpq is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-693: Protection Mechanism Failure) affecting Http proxy libraries in the npm ecosystem. The issue involves denial of service in http-proxy. Remediation is available by upgrading affected packages to version 1.18.1.

GHSA-6x33-pw7p-hmpq at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-6x33-pw7p-hmpq
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-693: Protection Mechanism Failure
Affected Product Http proxy
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 GHSA-6x33-pw7p-hmpq

To remediate this vulnerability, upgrade all affected Http proxy 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 fixed: 1.18.1 
npm install http-proxy@1.18.1
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 http-proxy

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-6x33-pw7p-hmpq, inspect your project dependencies using npm:

npm ls http-proxy

Analyze the terminal output to locate any version of Http proxy in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.18.1), your application is affected.

Note: The npm ls http-proxy 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-693: Protection Mechanism Failure, where the product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product. In Http proxy, 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 `http-proxy` prior to 1.18.1 are vulnerable to Denial of Service. An HTTP request with a long body triggers an `ERR_HTTP_HEADERS_SENT` unhandled exception that crashes the proxy server. This is only possible when the proxy server sets headers in the proxy request using the `proxyReq.setHeader` function. For a proxy server running on `http://localhost:3000`, the following curl request triggers the unhandled exception: ```curl -XPOST http://localhost:3000 -d "$(python -c 'print("x"*1025)')"``` ## Recommendation Upgrade to version 1.18.1 or later

GHSA-6x33-pw7p-hmpq Affected Http proxy Versions

1 component(s)
Fixed Versions:
1.18.1
Product / Package Ecosystem Affected Versions Fixed Version
http-proxy
npm/http-proxy
npm
< 1.18.1
1.18.1

References

Http proxy Source Repository REPOSITORY
https://github.com/http-party/node-http-proxy/pull/1447/commits/4718119ffbe895aecd9be0d6430357d44b4c7fd3
Http proxy Source Repository REPOSITORY
https://github.com/http-party/node-http-proxy/pull/1447/files
www.npmjs.com/advisories/1486 WEB
https://www.npmjs.com/advisories/1486

Frequently Asked Questions

What is GHSA-6x33-pw7p-hmpq?
GHSA-6x33-pw7p-hmpq is a security vulnerability in Http proxy involving Denial of Service in http-proxy under CWE-693: Protection Mechanism Failure.
Which Http proxy versions are affected?
Affected versions include releases prior to 1.18.1 across affected packages: http-proxy.
What version fixes GHSA-6x33-pw7p-hmpq?
Upgrading to 1.18.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is http-proxy affected?
Yes, http-proxy is affected in releases prior to 1.18.1. Upgrade your dependency to 1.18.1 or later.
What is the CVSS score of GHSA-6x33-pw7p-hmpq?
GHSA-6x33-pw7p-hmpq 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 GHSA-6x33-pw7p-hmpq?
GHSA-6x33-pw7p-hmpq is classified under CWE-693: Protection Mechanism Failure (The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.).
How can I check npm dependencies for GHSA-6x33-pw7p-hmpq?
Run the dependency tree command: 'npm ls http-proxy'. 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-6x33-pw7p-hmpq",
  "modified" : "2024-01-29T20:57:00Z",
  "published" : "2020-09-04T17:59:49Z",
  "aliases" : [ ],
  "summary" : "Denial of Service in http-proxy",
  "details" : "Versions of `http-proxy` prior to 1.18.1 are vulnerable to Denial of Service. An HTTP request with a long body triggers an `ERR_HTTP_HEADERS_SENT` unhandled exception that crashes the proxy server. This is only possible when the proxy server sets headers in the proxy request using the `proxyReq.setHeader` function.   \n\nFor a proxy server running on `http://localhost:3000`, the following curl request triggers the unhandled exception:  \n```curl -XPOST http://localhost:3000 -d \"$(python -c 'print(\"x\"*1025)')\"```\n\n\n## Recommendation\n\nUpgrade to version 1.18.1 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" : "http-proxy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.18.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/http-party/node-http-proxy/pull/1447/commits/4718119ffbe895aecd9be0d6430357d44b4c7fd3"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/http-party/node-http-proxy/pull/1447/files"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/1486"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-184", "CWE-693" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T19:01:05Z",
    "nvd_published_at" : null
  }
}