CVE-2020-7684: Rollup plugin serve Path Traversal Vulnerability

CRITICAL
Advisory Identifier: GHSA-4j46-mp85-mv8c
Share
CVSS 9.8
CWE-22
Published
Advisory Summary

CVE-2020-7684 is a CRITICAL (CVSS 9.8) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Rollup plugin serve libraries in the npm ecosystem. The issue involves path traversal in rollup-plugin-serve. Remediation is available by upgrading affected packages to version 1.0.2.

CVE-2020-7684 at a Glance

CVE Identifier CVE-2020-7684
GHSA Identifier GHSA-4j46-mp85-mv8c
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Rollup plugin serve
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 9.8

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:H/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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2020-7684

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

rollup-plugin-serve fixed: 1.0.2 
npm install rollup-plugin-serve@1.0.2
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 rollup-plugin-serve

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-7684, inspect your project dependencies using npm:

npm ls rollup-plugin-serve

Analyze the terminal output to locate any version of Rollup plugin serve in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.2), your application is affected.

Note: The npm ls rollup-plugin-serve 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 Rollup plugin serve, 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

Path traversal in npm package `rollup-plugin-serve` before version 1.0.2. There is no path sanitization in `readFile` operation.

CVE-2020-7684 Affected Rollup plugin serve Versions

1 component(s)
Fixed Versions:
1.0.2
Product / Package Ecosystem Affected Versions Fixed Version
rollup-plugin-serve
npm/rollup-plugin-serve
npm
< 1.0.2
1.0.2

References

NVD — CVE-2020-7684 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7684
Security Fix Commit FIX COMMIT
https://github.com/thgh/rollup-plugin-serve/commit/3d144f2f47e86fcba34f5a144968da94220e3969
Rollup plugin serve Release RELEASE
https://github.com/thgh/rollup-plugin-serve/releases/tag/v1.0.2
vuldb.com/ WEB
https://vuldb.com/?id.158745

Frequently Asked Questions

What is CVE-2020-7684?
CVE-2020-7684 is a security vulnerability in Rollup plugin serve involving Path traversal in rollup-plugin-serve under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Rollup plugin serve versions are affected?
Affected versions include releases prior to 1.0.2 across affected packages: rollup-plugin-serve.
What version fixes CVE-2020-7684?
Upgrading to 1.0.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is rollup-plugin-serve affected?
Yes, rollup-plugin-serve is affected in releases prior to 1.0.2. Upgrade your dependency to 1.0.2 or later.
What is the CVSS score of CVE-2020-7684?
CVE-2020-7684 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-7684?
CVE-2020-7684 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-2020-7684?
Run the dependency tree command: 'npm ls rollup-plugin-serve'. 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-4j46-mp85-mv8c",
  "modified" : "2021-05-18T01:51:52Z",
  "published" : "2021-05-18T01:52:24Z",
  "aliases" : [ "CVE-2020-7684" ],
  "summary" : "Path traversal in rollup-plugin-serve",
  "details" : "Path traversal in npm package `rollup-plugin-serve` before version 1.0.2. There is no path sanitization in `readFile` operation.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "rollup-plugin-serve"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-7684"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/thgh/rollup-plugin-serve/commit/3d144f2f47e86fcba34f5a144968da94220e3969"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/thgh/rollup-plugin-serve/releases/tag/v1.0.2"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?id.158745"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-10T21:12:24Z",
    "nvd_published_at" : "2020-07-17T08:15:00Z"
  }
}