CVE-2019-10799: Compile sass OS Command Injection Vulnerability

HIGH
Advisory Identifier: GHSA-79qm-h35f-hr77
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CVSS 9.8
CWE-78
Published
Advisory Summary

CVE-2019-10799 is a HIGH (CVSS 9.8) os command injection vulnerability (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')) affecting Compile sass libraries in the npm ecosystem. The issue involves os command injection in compile-sass. Remediation is available by upgrading affected packages to version 1.0.5.

CVE-2019-10799 at a Glance

CVE Identifier CVE-2019-10799
GHSA Identifier GHSA-79qm-h35f-hr77
Severity HIGH
CVSS v3.1 Base Score 9.8
CWE Classification CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Product Compile sass
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-2019-10799

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

compile-sass fixed: 1.0.5 
npm install compile-sass@1.0.5
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 compile-sass

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2019-10799, inspect your project dependencies using npm:

npm ls compile-sass

Analyze the terminal output to locate any version of Compile sass in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.5), your application is affected.

Note: The npm ls compile-sass 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-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), where the product constructs all or part of an os command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended os command when it is sent to a downstream component. In Compile sass, 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

compile-sass prior to 1.0.5 allows execution of arbritary commands. The function "setupCleanupOnExit(cssPath)" within "dist/index.js" is executed as part of the "rm" command without any sanitization.

CVE-2019-10799 Affected Compile sass Versions

1 component(s)
Fixed Versions:
1.0.5
Product / Package Ecosystem Affected Versions Fixed Version
compile-sass
npm/compile-sass
npm
< 1.0.5
1.0.5

References

NVD — CVE-2019-10799 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-10799
Security Fix Commit FIX COMMIT
https://github.com/eiskalteschatten/compile-sass/commit/d9ada7797ff93875b6466dea7a78768e90a0f8d2
Compile sass Source Repository REPOSITORY
https://github.com/eiskalteschatten/compile-sass
snyk.io/vuln/snyk-js-compil... WEB
https://snyk.io/vuln/SNYK-JS-COMPILESASS-551804
snyk.io/vuln/snyk-js-rpi-54... WEB
https://snyk.io/vuln/SNYK-JS-RPI-548942

Frequently Asked Questions

What is CVE-2019-10799?
CVE-2019-10799 is a security vulnerability in Compile sass involving OS Command Injection in compile-sass under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection').
Which Compile sass versions are affected?
Affected versions include releases prior to 1.0.5 across affected packages: compile-sass.
What version fixes CVE-2019-10799?
Upgrading to 1.0.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is compile-sass affected?
Yes, compile-sass is affected in releases prior to 1.0.5. Upgrade your dependency to 1.0.5 or later.
What is the CVSS score of CVE-2019-10799?
CVE-2019-10799 has a CVSS v3.1 base score of 9.8 (HIGH) 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-2019-10799?
CVE-2019-10799 is classified under CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.).
How can I check npm dependencies for CVE-2019-10799?
Run the dependency tree command: 'npm ls compile-sass'. 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-79qm-h35f-hr77",
  "modified" : "2022-01-04T19:48:58Z",
  "published" : "2021-04-13T15:23:13Z",
  "aliases" : [ "CVE-2019-10799" ],
  "summary" : "OS Command Injection in compile-sass",
  "details" : "compile-sass prior to 1.0.5 allows execution of arbritary commands. The function &quot;setupCleanupOnExit(cssPath)&quot; within &quot;dist/index.js&quot; is executed as part of the &quot;rm&quot; command without any sanitization.",
  "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" : "compile-sass"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-10799"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/eiskalteschatten/compile-sass/commit/d9ada7797ff93875b6466dea7a78768e90a0f8d2"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/eiskalteschatten/compile-sass"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-COMPILESASS-551804"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-RPI-548942"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-04-08T20:21:56Z",
    "nvd_published_at" : "2020-02-24T18:15:00Z"
  }
}