CVE-2020-15881: Munkireport/munki facts Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-x9q4-5f3c-cw62
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2020-15881 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Munkireport/munki facts libraries in the Packagist ecosystem. The issue involves munkireport munki_facts module cross-site scripting (xss) vulnerability. Remediation is available by upgrading affected packages to version 1.5.

CVE-2020-15881 at a Glance

CVE Identifier CVE-2020-15881
GHSA Identifier GHSA-x9q4-5f3c-cw62
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 Munkireport/munki facts
Package Ecosystem Packagist
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:3.1/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-2020-15881

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

munkireport/munki_facts fixed: 1.5 
Upgrade munkireport/munki_facts to 1.5
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for munkireport/munki_facts

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-15881, inspect your project dependencies for Munkireport/munki facts:

inspect dependencies for munkireport/munki_facts

Analyze the terminal output to locate any version of Munkireport/munki facts in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.5), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

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 Munkireport/munki facts, 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

A Cross-Site Scripting (XSS) vulnerability in the munki_facts (aka Munki Conditions) module before 1.5 for MunkiReport allows remote attackers to inject arbitrary web script or HTML via the key name.

CVE-2020-15881 Affected Munkireport/munki facts Versions

1 component(s)
Fixed Versions:
1.5
Product / Package Ecosystem Affected Versions Fixed Version
munkireport/munki_facts
 Packagist
< 1.5
1.5

References

NVD — CVE-2020-15881 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15881
Munkireport/munki facts Source Repository REPOSITORY
https://github.com/munkireport/munki_facts
Munkireport/munki facts Source Repository REPOSITORY
https://github.com/munkireport/munki_facts/releases
Munkireport/munki facts Source Repository REPOSITORY
https://github.com/munkireport/munkireport-php
Munkireport/munki facts Release RELEASE
https://github.com/munkireport/munkireport-php/releases/tag/v5.6.3
GitHub Advisory / Wiki ADVISORY
https://github.com/munkireport/munkireport-php/wiki/20200722-munki_facts-XSS

Frequently Asked Questions

What is CVE-2020-15881?
CVE-2020-15881 is a security vulnerability in Munkireport/munki facts involving MunkiReport munki_facts module Cross-Site Scripting (XSS) vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Munkireport/munki facts versions are affected?
Affected versions include releases prior to 1.5 across affected packages: munkireport/munki_facts.
What version fixes CVE-2020-15881?
Upgrading to 1.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is munkireport/munki_facts affected?
Yes, munkireport/munki_facts is affected in releases prior to 1.5. Upgrade your dependency to 1.5 or later.
What is the CVSS score of CVE-2020-15881?
CVE-2020-15881 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2020-15881?
CVE-2020-15881 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 Packagist dependencies for CVE-2020-15881?
Run the dependency tree command: 'inspect dependencies for munkireport/munki_facts'. 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-x9q4-5f3c-cw62",
  "modified" : "2024-04-24T22:53:05Z",
  "published" : "2022-05-24T17:24:15Z",
  "aliases" : [ "CVE-2020-15881" ],
  "summary" : "MunkiReport munki_facts module Cross-Site Scripting (XSS) vulnerability",
  "details" : "A Cross-Site Scripting (XSS) vulnerability in the munki_facts (aka Munki Conditions) module before 1.5 for MunkiReport allows remote attackers to inject arbitrary web script or HTML via the key name.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "munkireport/munki_facts"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-15881"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/munkireport/munki_facts"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/munkireport/munki_facts/releases"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/munkireport/munkireport-php"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/munkireport/munkireport-php/releases/tag/v5.6.3"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/munkireport/munkireport-php/wiki/20200722-munki_facts-XSS"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-24T22:53:05Z",
    "nvd_published_at" : "2020-07-23T14:15:00Z"
  }
}