CVE-2020-7762: Jsreport chrome pdf Path Traversal Vulnerability

MODERATE
Advisory Identifier: GHSA-934w-hvj4-7fr6
Share
CVSS 6.5
CWE-22
Published
Advisory Summary

CVE-2020-7762 is a MODERATE (CVSS 6.5) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Jsreport chrome pdf libraries in the npm ecosystem. The issue involves path traversal in jsreport-chrome-pdf. Remediation is available by upgrading affected packages to version 1.10.0.

CVE-2020-7762 at a Glance

CVE Identifier CVE-2020-7762
GHSA Identifier GHSA-934w-hvj4-7fr6
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 Jsreport chrome pdf
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-2020-7762

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

jsreport-chrome-pdf fixed: 1.10.0 
npm install jsreport-chrome-pdf@1.10.0
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 jsreport-chrome-pdf

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-7762, inspect your project dependencies using npm:

npm ls jsreport-chrome-pdf

Analyze the terminal output to locate any version of Jsreport chrome pdf in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.10.0), your application is affected.

Note: The npm ls jsreport-chrome-pdf 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 Jsreport chrome pdf, 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

This affects the package jsreport-chrome-pdf before 1.10.0.

CVE-2020-7762 Affected Jsreport chrome pdf Versions

1 component(s)
Fixed Versions:
1.10.0
Product / Package Ecosystem Affected Versions Fixed Version
jsreport-chrome-pdf
npm/jsreport-chrome-pdf
npm
< 1.10.0
1.10.0

References

NVD — CVE-2020-7762 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7762
Security Fix Commit FIX COMMIT
https://github.com/jsreport/jsreport-chrome-pdf/commit/6750b2f77d05cb843aefc1c4a98097a3bd33a6a2
snyk.io/vuln/snyk-js-jsrepo... WEB
https://snyk.io/vuln/SNYK-JS-JSREPORTCHROMEPDF-1037310

Frequently Asked Questions

What is CVE-2020-7762?
CVE-2020-7762 is a security vulnerability in Jsreport chrome pdf involving Path Traversal in jsreport-chrome-pdf under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Jsreport chrome pdf versions are affected?
Affected versions include releases prior to 1.10.0 across affected packages: jsreport-chrome-pdf.
What version fixes CVE-2020-7762?
Upgrading to 1.10.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is jsreport-chrome-pdf affected?
Yes, jsreport-chrome-pdf is affected in releases prior to 1.10.0. Upgrade your dependency to 1.10.0 or later.
What is the CVSS score of CVE-2020-7762?
CVE-2020-7762 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-2020-7762?
CVE-2020-7762 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-2020-7762?
Run the dependency tree command: 'npm ls jsreport-chrome-pdf'. 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-934w-hvj4-7fr6",
  "modified" : "2021-08-02T15:38:02Z",
  "published" : "2021-04-13T15:25:15Z",
  "aliases" : [ "CVE-2020-7762" ],
  "summary" : "Path Traversal in jsreport-chrome-pdf",
  "details" : "This affects the package jsreport-chrome-pdf before 1.10.0.",
  "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" : "jsreport-chrome-pdf"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.10.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-7762"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jsreport/jsreport-chrome-pdf/commit/6750b2f77d05cb843aefc1c4a98097a3bd33a6a2"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-JSREPORTCHROMEPDF-1037310"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-04-06T22:36:49Z",
    "nvd_published_at" : "2020-11-05T13:15:00Z"
  }
}