CVE-2017-16101: Serverwg Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-2f29-pmpx-vj62
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CVSS 7.5
CWE-22
Published
Advisory Summary

CVE-2017-16101 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Serverwg libraries in the npm ecosystem. The issue involves directory traversal in serverwg. Remediation is available in the latest vendor maintenance releases.

CVE-2017-16101 at a Glance

CVE Identifier CVE-2017-16101
GHSA Identifier GHSA-2f29-pmpx-vj62
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 Serverwg
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:3.0/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-2017-16101

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

serverwg fixed: Latest secure release 
npm install serverwg@Latest secure release
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 serverwg

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2017-16101, inspect your project dependencies using npm:

npm ls serverwg

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

Note: The npm ls serverwg 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 Serverwg, 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

`serverwg` is a simple http server. `serverwg` is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing "../" in the URL. **Example request:** ```http GET /../../../../../../../../../../etc/passwd HTTP/1.1 host:foo ``` and response: ``` HTTP/1.1 200 OK Date: Wed, 17 May 2017 22:52:08 GMT Connection: keep-alive {contents of /etc/passwd} ``` ## Recommendation No patch is available for this vulnerability. It is recommended that the package is only used for local development, and if the functionality is needed for production, a different package is used instead.

CVE-2017-16101 Affected Serverwg Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
serverwg
npm/serverwg
npm
≥ 0.0.0

References

NVD — CVE-2017-16101 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-16101
Serverwg Source Repository REPOSITORY
https://github.com/JacksonGL/NPM-Vuln-PoC/tree/master/directory-traversal/serverwg
www.npmjs.com/advisories/364 WEB
https://www.npmjs.com/advisories/364

Frequently Asked Questions

What is CVE-2017-16101?
CVE-2017-16101 is a security vulnerability in Serverwg involving Directory Traversal in serverwg under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Serverwg versions are affected?
Affected versions include releases prior to current release patches across affected packages: serverwg.
What version fixes CVE-2017-16101?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is serverwg affected?
Yes, serverwg is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2017-16101?
CVE-2017-16101 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2017-16101?
CVE-2017-16101 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-2017-16101?
Run the dependency tree command: 'npm ls serverwg'. 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-2f29-pmpx-vj62",
  "modified" : "2023-09-07T20:42:00Z",
  "published" : "2020-09-01T16:52:33Z",
  "aliases" : [ "CVE-2017-16101" ],
  "summary" : "Directory Traversal in serverwg",
  "details" : "`serverwg` is a simple http server.\n\n`serverwg` is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing \"../\" in the URL.\n\n**Example request:**\n```http\nGET /../../../../../../../../../../etc/passwd HTTP/1.1\nhost:foo\n```\nand response:\n```\nHTTP/1.1 200 OK\nDate: Wed, 17 May 2017 22:52:08 GMT\nConnection: keep-alive\n\n{contents of /etc/passwd}\n```\n\n\n## Recommendation\n\nNo patch is available for this vulnerability.\n\nIt is recommended that the package is only used for local development, and if the functionality is needed for production, a different package is used instead.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "serverwg"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-16101"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/JacksonGL/NPM-Vuln-PoC/tree/master/directory-traversal/serverwg"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/364"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-08-31T18:20:32Z",
    "nvd_published_at" : null
  }
}