CVE-2021-27916: Mautic/core Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-9fcx-cv56-w58p
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CVSS 8.1
CWE-23 CWE-22
Published
Advisory Summary

CVE-2021-27916 is a HIGH (CVSS 8.1) path traversal vulnerability (CWE-23: Relative Path Traversal) affecting Mautic/core libraries in the Packagist ecosystem. The issue involves mautic vulnerable to relative path traversal / arbitrary file deletion due to grapesjs builder. Remediation is available by upgrading affected packages to version 4.4.12, 5.0.4.

CVE-2021-27916 at a Glance

CVE Identifier CVE-2021-27916
GHSA Identifier GHSA-9fcx-cv56-w58p
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-23: Relative Path Traversal
Affected Product Mautic/core
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.1

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:N/I:H/A:H).

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 None (C:N)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2021-27916

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

mautic/core fixed: 4.4.12 
Upgrade mautic/core to 4.4.12
mautic/core fixed: 5.0.4 
Upgrade mautic/core to 5.0.4
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 mautic/core

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-27916, inspect your project dependencies for Mautic/core:

inspect dependencies for mautic/core

Analyze the terminal output to locate any version of Mautic/core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.4.12), 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-23: Relative Path Traversal, where the product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. In Mautic/core, 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

### Impact Prior to the patched version, logged in users of Mautic are vulnerable to Relative Path Traversal/Arbitrary File Deletion. Regardless of the level of access the Mautic user had, they could delete files other than those in the media folders such as system files, libraries or other important files. This vulnerability exists in the implementation of the GrapesJS builder in Mautic. ### Patches Update to 4.4.12 or 5.0.4. ### Workarounds No ### References - https://cwe.mitre.org/data/definitions/23.html - https://cwe.mitre.org/data/definitions/22.html - https://attack.mitre.org/techniques/T1630/002/ ### For more information If you have any questions or comments about this advisory: Email us at [security@mautic.org](mailto:security@mautic.org)

CVE-2021-27916 Affected Mautic/core Versions

2 component(s)
Fixed Versions:
4.4.125.0.4
Product / Package Ecosystem Affected Versions Fixed Version
mautic/core
 Packagist
≥ 3.3.0
< 4.4.12
4.4.12
mautic/core
 Packagist
≥ 5.0.0-alpha
< 5.0.4
5.0.4

References

GitHub Advisory / Wiki ADVISORY
https://github.com/mautic/mautic/security/advisories/GHSA-9fcx-cv56-w58p
NVD — CVE-2021-27916 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27916
Security Fix Commit FIX COMMIT
https://github.com/mautic/mautic/commit/546045ff9c74dd8b3dac36c4ab3674380262c65a
Security Fix Commit FIX COMMIT
https://github.com/mautic/mautic/commit/95e8df3ae6730c725f1848d70e7992da369518f3
Mautic/core Source Repository REPOSITORY
https://github.com/mautic/mautic

Frequently Asked Questions

What is CVE-2021-27916?
CVE-2021-27916 is a security vulnerability in Mautic/core involving Mautic vulnerable to Relative Path Traversal / Arbitrary File Deletion due to GrapesJS builder under CWE-23: Relative Path Traversal.
Which Mautic/core versions are affected?
Affected versions include releases prior to 4.4.12, 5.0.4 across affected packages: mautic/core.
What version fixes CVE-2021-27916?
Upgrading to 4.4.12, 5.0.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is mautic/core affected?
Yes, mautic/core is affected in releases prior to 4.4.12, 5.0.4. Upgrade your dependency to 4.4.12, 5.0.4 or later.
What is the CVSS score of CVE-2021-27916?
CVE-2021-27916 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
What CWE is associated with CVE-2021-27916?
CVE-2021-27916 is classified under CWE-23: Relative Path Traversal (The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.).
How can I check Packagist dependencies for CVE-2021-27916?
Run the dependency tree command: 'inspect dependencies for mautic/core'. 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-9fcx-cv56-w58p",
  "modified" : "2024-10-02T16:18:59Z",
  "published" : "2024-04-12T17:07:12Z",
  "aliases" : [ "CVE-2021-27916" ],
  "summary" : "Mautic vulnerable to Relative Path Traversal / Arbitrary File Deletion due to GrapesJS builder",
  "details" : "### Impact\nPrior to the patched version, logged in users of Mautic are vulnerable to Relative Path Traversal/Arbitrary File Deletion.  Regardless of the level of access the Mautic user had, they could delete files other than those in the media folders such as system files, libraries or other important files.\n\nThis vulnerability exists in the implementation of the GrapesJS builder in Mautic.\n\n### Patches\nUpdate to 4.4.12 or 5.0.4.\n\n### Workarounds\nNo\n\n### References\n- https://cwe.mitre.org/data/definitions/23.html\n- https://cwe.mitre.org/data/definitions/22.html\n- https://attack.mitre.org/techniques/T1630/002/\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\nEmail us at [security@mautic.org](mailto:security@mautic.org)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mautic/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.3.0"
      }, {
        "fixed" : "4.4.12"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mautic/core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0.0-alpha"
      }, {
        "fixed" : "5.0.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/mautic/mautic/security/advisories/GHSA-9fcx-cv56-w58p"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-27916"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mautic/mautic/commit/546045ff9c74dd8b3dac36c4ab3674380262c65a"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mautic/mautic/commit/95e8df3ae6730c725f1848d70e7992da369518f3"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mautic/mautic"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22", "CWE-23" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-12T17:07:12Z",
    "nvd_published_at" : "2024-09-17T15:15:11Z"
  }
}