CVE-2021-23340: Pimcore/pimcore Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-h7f9-cvh5-qw7f
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CVSS 7.1
CWE-22
Published
Advisory Summary

CVE-2021-23340 is a HIGH (CVSS 7.1) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Pimcore/pimcore libraries in the Packagist ecosystem. The issue involves path traversal in pimcore/pimcore. Remediation is available by upgrading affected packages to version 6.8.8.

CVE-2021-23340 at a Glance

CVE Identifier CVE-2021-23340
GHSA Identifier GHSA-h7f9-cvh5-qw7f
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Pimcore/pimcore
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.1

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

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

How to Fix CVE-2021-23340

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

pimcore/pimcore fixed: 6.8.8 
Upgrade pimcore/pimcore to 6.8.8
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 pimcore/pimcore

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-23340, inspect your project dependencies for Pimcore/pimcore:

inspect dependencies for pimcore/pimcore

Analyze the terminal output to locate any version of Pimcore/pimcore in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.8.8), 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Pimcore/pimcore, 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

This affects the package pimcore/pimcore before 6.8.8. A Local FIle Inclusion vulnerability exists in the downloadCsvAction function of the CustomReportController class (bundles/AdminBundle/Controller/Reports/CustomReportController.php). An authenticated user can reach this function with a GET request at the following endpoint: /admin/reports/custom-report/download-csv?exportFile=&91;filename]. Since exportFile variable is not sanitized, an attacker can exploit a local file inclusion vulnerability.

CVE-2021-23340 Affected Pimcore/pimcore Versions

1 component(s)
Fixed Versions:
6.8.8
Product / Package Ecosystem Affected Versions Fixed Version
pimcore/pimcore
 Packagist
< 6.8.8
6.8.8

References

NVD — CVE-2021-23340 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-23340
Security Fix Commit FIX COMMIT
https://github.com/pimcore/pimcore/commit/1786bdd4962ee51544fad537352c2b4223309442
Pimcore/pimcore Source Repository REPOSITORY
https://github.com/pimcore/pimcore/blob/v6.7.2/bundles/AdminBundle/Controller/Reports/CustomReportController.php%23L454
snyk.io/vuln/snyk-php-pimco... WEB
https://snyk.io/vuln/SNYK-PHP-PIMCOREPIMCORE-1070132

Frequently Asked Questions

What is CVE-2021-23340?
CVE-2021-23340 is a security vulnerability in Pimcore/pimcore involving Path traversal in pimcore/pimcore under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Pimcore/pimcore versions are affected?
Affected versions include releases prior to 6.8.8 across affected packages: pimcore/pimcore.
What version fixes CVE-2021-23340?
Upgrading to 6.8.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pimcore/pimcore affected?
Yes, pimcore/pimcore is affected in releases prior to 6.8.8. Upgrade your dependency to 6.8.8 or later.
What is the CVSS score of CVE-2021-23340?
CVE-2021-23340 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
What CWE is associated with CVE-2021-23340?
CVE-2021-23340 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Packagist dependencies for CVE-2021-23340?
Run the dependency tree command: 'inspect dependencies for pimcore/pimcore'. 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-h7f9-cvh5-qw7f",
  "modified" : "2023-09-12T15:34:23Z",
  "published" : "2021-02-25T16:32:46Z",
  "aliases" : [ "CVE-2021-23340" ],
  "summary" : "Path traversal in pimcore/pimcore",
  "details" : "This affects the package pimcore/pimcore before 6.8.8. A Local FIle Inclusion vulnerability exists in the downloadCsvAction function of the CustomReportController class (bundles/AdminBundle/Controller/Reports/CustomReportController.php). An authenticated user can reach this function with a GET request at the following endpoint: /admin/reports/custom-report/download-csv?exportFile=&91;filename]. Since exportFile variable is not sanitized, an attacker can exploit a local file inclusion vulnerability.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "pimcore/pimcore"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.8.8"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-23340"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pimcore/pimcore/commit/1786bdd4962ee51544fad537352c2b4223309442"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pimcore/pimcore/blob/v6.7.2/bundles/AdminBundle/Controller/Reports/CustomReportController.php%23L454"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-PHP-PIMCOREPIMCORE-1070132"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-02-24T07:37:55Z",
    "nvd_published_at" : "2021-02-18T15:15:00Z"
  }
}