CVE-2018-3713: Angular http server Path Traversal Vulnerability

MODERATE
Advisory Identifier: GHSA-4rvg-955w-h68q
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CVSS 6.5
CWE-22
Published
Advisory Summary

CVE-2018-3713 is a MODERATE (CVSS 6.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Angular http server libraries in the npm ecosystem. The issue involves path traversal in angular-http-server. Remediation is available by upgrading affected packages to version 1.6.0.

CVE-2018-3713 at a Glance

CVE Identifier CVE-2018-3713
GHSA Identifier GHSA-4rvg-955w-h68q
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Angular http server
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.5

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2018-3713

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

angular-http-server fixed: 1.6.0 
npm install angular-http-server@1.6.0
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 angular-http-server

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2018-3713, inspect your project dependencies using npm:

npm ls angular-http-server

Analyze the terminal output to locate any version of Angular http server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.6.0), your application is affected.

Note: The npm ls angular-http-server 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 Angular http server, 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

Affected versions of `angular-http-server` are vulnerable to path traversal allowing a remote attacker to read files from the server that uses `angular-http-server`. ## Recommendation Update to version 1.6.0 or later. :exclamation: Note: This was originally thought to be fixed in version 1.4.3, though according to [this issue](https://github.com/ossf-cve-benchmark/ossf-cve-benchmark/issues/117#issuecomment-803872454) the vulnerability was not completely fixed until version 1.6.0.

CVE-2018-3713 Affected Angular http server Versions

1 component(s)
Fixed Versions:
1.6.0
Product / Package Ecosystem Affected Versions Fixed Version
angular-http-server
npm/angular-http-server
npm
< 1.6.0
1.6.0

References

NVD — CVE-2018-3713 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-3713
Angular http server Source Repository REPOSITORY
https://github.com/simonh1000/angular-http-server/pull/21
Security Fix Commit FIX COMMIT
https://github.com/simonh1000/angular-http-server/commit/34d4bd0cd0f00c46db30855a8c4aabae27eb0ac8
hackerone.com/reports/309120 WEB
https://hackerone.com/reports/309120
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-4rvg-955w-h68q
www.npmjs.com/advisories/589 WEB
https://www.npmjs.com/advisories/589

Frequently Asked Questions

What is CVE-2018-3713?
CVE-2018-3713 is a security vulnerability in Angular http server involving Path Traversal in angular-http-server under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Angular http server versions are affected?
Affected versions include releases prior to 1.6.0 across affected packages: angular-http-server.
What version fixes CVE-2018-3713?
Upgrading to 1.6.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is angular-http-server affected?
Yes, angular-http-server is affected in releases prior to 1.6.0. Upgrade your dependency to 1.6.0 or later.
What is the CVSS score of CVE-2018-3713?
CVE-2018-3713 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2018-3713?
CVE-2018-3713 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-2018-3713?
Run the dependency tree command: 'npm ls angular-http-server'. 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-4rvg-955w-h68q",
  "modified" : "2023-03-01T01:19:07Z",
  "published" : "2018-07-26T14:47:40Z",
  "aliases" : [ "CVE-2018-3713" ],
  "summary" : "Path Traversal in angular-http-server",
  "details" : "Affected versions of `angular-http-server` are vulnerable to path traversal allowing a remote attacker to read files from the server that uses `angular-http-server`.\n\n## Recommendation\n\nUpdate to version 1.6.0 or later.\n\n:exclamation: Note: This was originally thought to be fixed in version 1.4.3, though according to [this issue](https://github.com/ossf-cve-benchmark/ossf-cve-benchmark/issues/117#issuecomment-803872454) the vulnerability was not completely fixed until version 1.6.0.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "angular-http-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.6.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-3713"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/simonh1000/angular-http-server/pull/21"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/simonh1000/angular-http-server/commit/34d4bd0cd0f00c46db30855a8c4aabae27eb0ac8"
  }, {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/309120"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-4rvg-955w-h68q"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/589"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T20:59:07Z",
    "nvd_published_at" : "2018-06-07T02:29:00Z"
  }
}