CVE-2023-41319: Ethyca fides Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-p6p2-qq95-vq5h
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CVSS 8.8
CWE-693
Published
Advisory Summary

CVE-2023-41319 is a HIGH (CVSS 8.8) remote code execution vulnerability (CWE-693: Protection Mechanism Failure) affecting Ethyca fides libraries in the PyPI ecosystem. The issue involves remote code execution in custom integration upload. Remediation is available by upgrading affected packages to version 2.19.0.

CVE-2023-41319 at a Glance

CVE Identifier CVE-2023-41319
GHSA Identifier GHSA-p6p2-qq95-vq5h
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-693: Protection Mechanism Failure
Affected Product Ethyca fides
Package Ecosystem PyPI
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-2023-41319

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

ethyca-fides fixed: 2.19.0 
pip install ethyca-fides>=2.19.0
Verify Direct and Transitive Dependencies

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

pip show ethyca-fides

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2023-41319, inspect your installed packages using pip:

pip show ethyca-fides

Analyze the terminal output to locate any version of Ethyca fides in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.19.0), your application is affected.

Note: The pip show ethyca-fides command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-693: Protection Mechanism Failure, where the product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product. In Ethyca fides, 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 The Fides webserver API allows custom integrations to be uploaded as a ZIP file. This ZIP file must contain YAML files, but Fides can be configured to also accept the inclusion of custom Python code in it. The custom code is executed in a restricted, sandboxed environment, but the sandbox can be bypassed to execute any arbitrary code. The vulnerability allows the execution of arbitrary code on the target system within the context of the webserver python process owner on the webserver container, which by default is `root`, and leverage that access to attack underlying infrastructure and integrated systems. This vulnerability affects Fides versions `2.11.0` through `2.18.0`. Exploitation is limited to API clients with the `CONNECTOR_TEMPLATE_REGISTER` authorization scope. In the Fides Admin UI this scope is restricted to highly privileged users, specifically root users and users with the owner role. Exploitation is only possible if the security configuration parameter `allow_custom_connector_functions` is enabled by the user deploying the Fides webserver container, either in `fides.toml` or by setting the env var `FIDES__SECURITY__ALLOW_CUSTOM_CONNECTOR_FUNCTIONS=True`. By default this configuration parameter is disabled. ### Patches The vulnerability has been patched in Fides version `2.19.0`. Users are advised to upgrade to this version or later to secure their systems against this threat. ### Workarounds Ensure that `allow_custom_connector_functions` in `fides.toml` and the `FIDES__SECURITY__ALLOW_CUSTOM_CONNECTOR_FUNCTIONS` are both either unset or explicit set to `False`.

CVE-2023-41319 Affected Ethyca fides Versions

1 component(s)
Fixed Versions:
2.19.0
Product / Package Ecosystem Affected Versions Fixed Version
ethyca-fides
pypi/ethyca-fides
PyPI
≥ 2.11.0
< 2.19.0
2.19.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ethyca/fides/security/advisories/GHSA-p6p2-qq95-vq5h
NVD — CVE-2023-41319 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-41319
Security Fix Commit FIX COMMIT
https://github.com/ethyca/fides/commit/5989b5fa744c8d8c340963b895a054883549358a
Ethyca fides Source Repository REPOSITORY
https://github.com/ethyca/fides

Frequently Asked Questions

What is CVE-2023-41319?
CVE-2023-41319 is a security vulnerability in Ethyca fides involving Remote Code Execution in Custom Integration Upload under CWE-693: Protection Mechanism Failure.
Which Ethyca fides versions are affected?
Affected versions include releases prior to 2.19.0 across affected packages: ethyca-fides.
What version fixes CVE-2023-41319?
Upgrading to 2.19.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ethyca-fides affected?
Yes, ethyca-fides is affected in releases prior to 2.19.0. Upgrade your dependency to 2.19.0 or later.
What is the CVSS score of CVE-2023-41319?
CVE-2023-41319 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-2023-41319?
CVE-2023-41319 is classified under CWE-693: Protection Mechanism Failure (The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.).
How can I check PyPI dependencies for CVE-2023-41319?
Run the dependency tree command: 'pip show ethyca-fides'. 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-p6p2-qq95-vq5h",
  "modified" : "2023-09-07T12:59:34Z",
  "published" : "2023-09-07T12:59:34Z",
  "aliases" : [ "CVE-2023-41319" ],
  "summary" : "Remote Code Execution in Custom Integration Upload",
  "details" : "### Impact\nThe Fides webserver API allows custom integrations to be uploaded as a ZIP file. This ZIP file must contain YAML files, but Fides can be configured to also accept the inclusion of custom Python code in it. The custom code is executed in a restricted, sandboxed environment, but the sandbox can be bypassed to execute any arbitrary code.\n\nThe vulnerability allows the execution of arbitrary code on the target system within the context of the webserver python process owner on the webserver container, which by default is `root`, and leverage that access to attack underlying infrastructure and integrated systems.\n\nThis vulnerability affects Fides versions `2.11.0` through `2.18.0`.\n\nExploitation is limited to API clients with the `CONNECTOR_TEMPLATE_REGISTER` authorization scope. In the Fides Admin UI this scope is restricted to highly privileged users, specifically root users and users with the owner role. \n\nExploitation is only possible if the security configuration parameter `allow_custom_connector_functions` is enabled by the user deploying the Fides webserver container, either in `fides.toml` or by setting the env var `FIDES__SECURITY__ALLOW_CUSTOM_CONNECTOR_FUNCTIONS=True`. By default this configuration parameter is disabled.\n\n### Patches\nThe vulnerability has been patched in Fides version `2.19.0`. Users are advised to upgrade to this version or later to secure their systems against this threat.\n\n### Workarounds\nEnsure that `allow_custom_connector_functions` in `fides.toml` and the `FIDES__SECURITY__ALLOW_CUSTOM_CONNECTOR_FUNCTIONS` are both either unset or explicit set to `False`.",
  "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" : "PyPI",
      "name" : "ethyca-fides"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.11.0"
      }, {
        "fixed" : "2.19.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ethyca/fides/security/advisories/GHSA-p6p2-qq95-vq5h"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-41319"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ethyca/fides/commit/5989b5fa744c8d8c340963b895a054883549358a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ethyca/fides"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-693" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-09-07T12:59:34Z",
    "nvd_published_at" : "2023-09-06T18:15:08Z"
  }
}