CVE-2020-7755: Dat.gui Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-chwr-hf3w-c984
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CVSS 7.5
CWE-400
Published
Advisory Summary

CVE-2020-7755 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Dat.gui libraries in the npm ecosystem. The issue involves regular expression denial of service in dat.gui. Remediation is available in the latest vendor maintenance releases.

CVE-2020-7755 at a Glance

CVE Identifier CVE-2020-7755
GHSA Identifier GHSA-chwr-hf3w-c984
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Dat.gui
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2020-7755

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

dat.gui fixed: Latest secure release 
npm install dat.gui@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 dat.gui

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2020-7755, inspect your project dependencies using npm:

npm ls dat.gui

Analyze the terminal output to locate any version of Dat.gui 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 dat.gui 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Dat.gui, 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

All versions of package dat.gui are vulnerable to Regular Expression Denial of Service (ReDoS) via specifically crafted rgb and rgba values.

CVE-2020-7755 Affected Dat.gui Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
dat.gui
npm/dat.gui
npm
≤ 0.7.7

References

NVD — CVE-2020-7755 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7755
Dat.gui Source Repository REPOSITORY
https://github.com/dataarts/dat.gui/issues/278
Dat.gui Source Repository REPOSITORY
https://github.com/dataarts/dat.gui/pull/279
snyk.io/vuln/snyk-js-datgui... WEB
https://snyk.io/vuln/SNYK-JS-DATGUI-1016275
www.npmjs.com/package/dat.gui WEB
https://www.npmjs.com/package/dat.gui

Frequently Asked Questions

What is CVE-2020-7755?
CVE-2020-7755 is a security vulnerability in Dat.gui involving Regular Expression Denial of Service in dat.gui under CWE-400: Uncontrolled Resource Consumption.
Which Dat.gui versions are affected?
Affected versions include releases prior to current release patches across affected packages: dat.gui.
What version fixes CVE-2020-7755?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is dat.gui affected?
Yes, dat.gui 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-2020-7755?
CVE-2020-7755 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2020-7755?
CVE-2020-7755 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check npm dependencies for CVE-2020-7755?
Run the dependency tree command: 'npm ls dat.gui'. 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-chwr-hf3w-c984",
  "modified" : "2021-04-21T17:36:43Z",
  "published" : "2021-05-10T18:44:38Z",
  "aliases" : [ "CVE-2020-7755" ],
  "summary" : "Regular Expression Denial of Service in dat.gui",
  "details" : "All versions of package dat.gui are vulnerable to Regular Expression Denial of Service (ReDoS) via specifically crafted rgb and rgba values.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "dat.gui"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.7.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-7755"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dataarts/dat.gui/issues/278"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dataarts/dat.gui/pull/279"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-DATGUI-1016275"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/package/dat.gui"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-04-21T17:36:43Z",
    "nvd_published_at" : "2020-10-27T18:15:00Z"
  }
}