CVE-2019-12043: Remarkable Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-36m4-6v6m-4vpr
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2019-12043 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Remarkable libraries in the npm ecosystem. The issue involves cross-site scripting in remarkable. Remediation is available by upgrading affected packages to version 1.7.2.

CVE-2019-12043 at a Glance

CVE Identifier CVE-2019-12043
GHSA Identifier GHSA-36m4-6v6m-4vpr
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Remarkable
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.1

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:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2019-12043

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

remarkable fixed: 1.7.2 
npm install remarkable@1.7.2
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 remarkable

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2019-12043, inspect your project dependencies using npm:

npm ls remarkable

Analyze the terminal output to locate any version of Remarkable in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.7.2), your application is affected.

Note: The npm ls remarkable 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Remarkable, 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

In remarkable 1.7.1, lib/parser_inline.js mishandles URL filtering, which allows attackers to trigger XSS via unprintable characters, as demonstrated by a `\x0ejavascript:` URL.

CVE-2019-12043 Affected Remarkable Versions

1 component(s)
Fixed Versions:
1.7.2
Product / Package Ecosystem Affected Versions Fixed Version
remarkable
npm/remarkable
npm
< 1.7.2
1.7.2

References

NVD — CVE-2019-12043 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-12043
Remarkable Source Repository REPOSITORY
https://github.com/jonschlinkert/remarkable/issues/332
Security Fix Commit FIX COMMIT
https://github.com/jonschlinkert/remarkable/commit/49e87b7ae2dc323d83606792a749fb207595249e

Frequently Asked Questions

What is CVE-2019-12043?
CVE-2019-12043 is a security vulnerability in Remarkable involving Cross-site Scripting in remarkable under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Remarkable versions are affected?
Affected versions include releases prior to 1.7.2 across affected packages: remarkable.
What version fixes CVE-2019-12043?
Upgrading to 1.7.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is remarkable affected?
Yes, remarkable is affected in releases prior to 1.7.2. Upgrade your dependency to 1.7.2 or later.
What is the CVSS score of CVE-2019-12043?
CVE-2019-12043 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2019-12043?
CVE-2019-12043 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check npm dependencies for CVE-2019-12043?
Run the dependency tree command: 'npm ls remarkable'. 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-36m4-6v6m-4vpr",
  "modified" : "2023-09-08T19:21:19Z",
  "published" : "2019-05-29T18:04:55Z",
  "aliases" : [ "CVE-2019-12043" ],
  "summary" : "Cross-site Scripting in remarkable",
  "details" : "In remarkable 1.7.1, lib/parser_inline.js mishandles URL filtering, which allows attackers to trigger XSS via unprintable characters, as demonstrated by a `\\x0ejavascript:` URL.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "remarkable"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.7.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-12043"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jonschlinkert/remarkable/issues/332"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jonschlinkert/remarkable/commit/49e87b7ae2dc323d83606792a749fb207595249e"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-05-14T01:14:15Z",
    "nvd_published_at" : "2019-05-13T14:29:00Z"
  }
}