CVE-2019-16317: Pimcore/pimcore Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-352x-hc2f-fwff
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CVSS 8.8
CWE-502
Published
Advisory Summary

CVE-2019-16317 is a HIGH (CVSS 8.8) remote code execution vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Pimcore/pimcore libraries in the Packagist ecosystem. The issue involves pimcore rce via phar upload. Remediation is available by upgrading affected packages to version 5.7.1.

CVE-2019-16317 at a Glance

CVE Identifier CVE-2019-16317
GHSA Identifier GHSA-352x-hc2f-fwff
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Pimcore/pimcore
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.8

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: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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2019-16317

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: 5.7.1 
Upgrade pimcore/pimcore to 5.7.1
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-2019-16317, 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 5.7.1), 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-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. 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

In Pimcore before 5.7.1, an attacker with limited privileges can trigger execution of a .phar file via a `phar://` URL in a filename parameter, because PHAR uploads are not blocked and are reachable within the `phar://../../../../../../../../var/www/html/web/var/assets/` directory, a different vulnerability than CVE-2019-10867 and CVE-2019-16318.

CVE-2019-16317 Affected Pimcore/pimcore Versions

1 component(s)
Fixed Versions:
5.7.1
Product / Package Ecosystem Affected Versions Fixed Version
pimcore/pimcore
 Packagist
< 5.7.1
5.7.1

References

NVD — CVE-2019-16317 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-16317
Security Fix Commit FIX COMMIT
https://github.com/pimcore/pimcore/commit/6ee5d8536d0802e377594cbe39083e822710aab9
snyk.io/vuln/snyk-php-pimco... WEB
https://snyk.io/vuln/SNYK-PHP-PIMCOREPIMCORE-451599

Frequently Asked Questions

What is CVE-2019-16317?
CVE-2019-16317 is a security vulnerability in Pimcore/pimcore involving Pimcore RCE via PHAR upload under CWE-502: Deserialization of Untrusted Data.
Which Pimcore/pimcore versions are affected?
Affected versions include releases prior to 5.7.1 across affected packages: pimcore/pimcore.
What version fixes CVE-2019-16317?
Upgrading to 5.7.1 (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 5.7.1. Upgrade your dependency to 5.7.1 or later.
What is the CVSS score of CVE-2019-16317?
CVE-2019-16317 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2019-16317?
CVE-2019-16317 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check Packagist dependencies for CVE-2019-16317?
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-352x-hc2f-fwff",
  "modified" : "2023-07-17T21:24:27Z",
  "published" : "2022-05-24T16:56:12Z",
  "aliases" : [ "CVE-2019-16317" ],
  "summary" : "Pimcore RCE via PHAR upload",
  "details" : "In Pimcore before 5.7.1, an attacker with limited privileges can trigger execution of a .phar file via a `phar://` URL in a filename parameter, because PHAR uploads are not blocked and are reachable within the `phar://../../../../../../../../var/www/html/web/var/assets/` directory, a different vulnerability than CVE-2019-10867 and CVE-2019-16318.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "pimcore/pimcore"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.7.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-16317"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pimcore/pimcore/commit/6ee5d8536d0802e377594cbe39083e822710aab9"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-PHP-PIMCOREPIMCORE-451599"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-17T21:24:27Z",
    "nvd_published_at" : "2019-09-14T18:15:00Z"
  }
}