CVE-2020-36629: Httpster Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-p8j8-wxvp-h695
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CVSS 7.5
CWE-22
Published
Advisory Summary

CVE-2020-36629 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Httpster libraries in the npm ecosystem. The issue involves simbco httpster vulnerable to path traversal. Remediation is available by upgrading affected packages to version 1.1.0.

CVE-2020-36629 at a Glance

CVE Identifier CVE-2020-36629
GHSA Identifier GHSA-p8j8-wxvp-h695
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Httpster
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:H/I:N/A:N).

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

How to Fix CVE-2020-36629

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

httpster fixed: 1.1.0 
npm install httpster@1.1.0
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 httpster

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-36629, inspect your project dependencies using npm:

npm ls httpster

Analyze the terminal output to locate any version of Httpster in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.0), your application is affected.

Note: The npm ls httpster 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Httpster, 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

A vulnerability classified as critical was found in SimbCo httpster. This vulnerability affects the function fs.realpathSync of the file src/server.coffee. The manipulation leads to path traversal. The exploit has been disclosed to the public and may be used. The name of the patch is d3055b3e30b40b65d30c5a06d6e053dffa7f35d0. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-216748.

CVE-2020-36629 Affected Httpster Versions

1 component(s)
Fixed Versions:
1.1.0
Product / Package Ecosystem Affected Versions Fixed Version
httpster
npm/httpster
npm
< 1.1.0
1.1.0

References

NVD — CVE-2020-36629 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36629
Httpster Source Repository REPOSITORY
https://github.com/SimbCo/httpster/pull/36
Security Fix Commit FIX COMMIT
https://github.com/SimbCo/httpster/commit/d3055b3e30b40b65d30c5a06d6e053dffa7f35d0
Httpster Source Repository REPOSITORY
https://github.com/SimbCo/httpster
vuldb.com/ WEB
https://vuldb.com/?id.216748

Frequently Asked Questions

What is CVE-2020-36629?
CVE-2020-36629 is a security vulnerability in Httpster involving SimbCo httpster vulnerable to Path Traversal under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Httpster versions are affected?
Affected versions include releases prior to 1.1.0 across affected packages: httpster.
What version fixes CVE-2020-36629?
Upgrading to 1.1.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is httpster affected?
Yes, httpster is affected in releases prior to 1.1.0. Upgrade your dependency to 1.1.0 or later.
What is the CVSS score of CVE-2020-36629?
CVE-2020-36629 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:H/I:N/A:N.
What CWE is associated with CVE-2020-36629?
CVE-2020-36629 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check npm dependencies for CVE-2020-36629?
Run the dependency tree command: 'npm ls httpster'. 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-p8j8-wxvp-h695",
  "modified" : "2023-01-06T23:07:38Z",
  "published" : "2022-12-25T12:30:25Z",
  "aliases" : [ "CVE-2020-36629" ],
  "summary" : "SimbCo httpster vulnerable to Path Traversal",
  "details" : "A vulnerability classified as critical was found in SimbCo httpster. This vulnerability affects the function fs.realpathSync of the file src/server.coffee. The manipulation leads to path traversal. The exploit has been disclosed to the public and may be used. The name of the patch is d3055b3e30b40b65d30c5a06d6e053dffa7f35d0. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-216748.\n\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "httpster"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.1.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-36629"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/SimbCo/httpster/pull/36"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/SimbCo/httpster/commit/d3055b3e30b40b65d30c5a06d6e053dffa7f35d0"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/SimbCo/httpster"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?id.216748"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-01-06T23:07:38Z",
    "nvd_published_at" : "2022-12-25T11:15:00Z"
  }
}