CVE-2019-19118: Django Django Allows Unintended Model Editing Vulnerability

HIGH
Advisory Identifier: GHSA-hvmf-r92r-27hr
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CVSS 6.5
CWE-276
Published
Advisory Summary

CVE-2019-19118 is a HIGH (CVSS 6.5) django allows unintended model editing vulnerability (CWE-276: Incorrect Default Permissions) affecting Django libraries in the PyPI ecosystem. The issue involves django allows unintended model editing. Remediation is available by upgrading affected packages to version 2.1.15, 2.2.8.

CVE-2019-19118 at a Glance

CVE Identifier CVE-2019-19118
GHSA Identifier GHSA-hvmf-r92r-27hr
Severity HIGH
CVSS v3.1 Base Score 6.5
CWE Classification CWE-276: Incorrect Default Permissions
Affected Product Django
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.5

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

How to Fix CVE-2019-19118

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

Django fixed: 2.1.15 
pip install Django>=2.1.15
Django fixed: 2.2.8 
pip install Django>=2.2.8
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 Django

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2019-19118, inspect your installed packages using pip:

pip show Django

Analyze the terminal output to locate any version of Django in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.1.15), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-276: Incorrect Default Permissions, where during installation, installed file permissions are set to allow anyone to modify those files. In Django, 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

Django 2.1 before 2.1.15 and 2.2 before 2.2.8 allows unintended model editing. A Django model admin displaying inline related models, where the user has view-only permissions to a parent model but edit permissions to the inline model, would be presented with an editing UI, allowing POST requests, for updating the inline model. Directly editing the view-only parent model was not possible, but the parent model's save() method was called, triggering potential side effects, and causing pre and post-save signal handlers to be invoked. (To resolve this, the Django admin is adjusted to require edit permissions on the parent model in order for inline models to be editable.)

CVE-2019-19118 Affected Django Versions

2 component(s)
Fixed Versions:
2.1.152.2.8
Product / Package Ecosystem Affected Versions Fixed Version
Django
pypi/Django
PyPI
≥ 2.1
< 2.1.15
2.1.15
Django
pypi/Django
PyPI
≥ 2.2
< 2.2.8
2.2.8

References

NVD — CVE-2019-19118 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-19118
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/103ebe2b5ff1b2614b85a52c239f471904d26244
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/36f580a17f0b3cb087deadf3b65eea024f479c21
Django Release RELEASE
https://docs.djangoproject.com/en/dev/releases/security
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-hvmf-r92r-27hr
Django Source Repository REPOSITORY
https://github.com/django/django
Django Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2019-15.yaml
groups.google.com/forum/ WEB
https://groups.google.com/forum/#!topic/django-announce/GjGqDvtNmWQ
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6R4HD22PVEVQ45H2JA2NXH443AYJOPL5
Django Security Information SECURITY
https://security.gentoo.org/glsa/202004-17
Django Security Information SECURITY
https://security.netapp.com/advisory/ntap-20191217-0003
Django Release RELEASE
https://www.djangoproject.com/weblog/2019/dec/02/security-releases
Django Security Information SECURITY
http://www.openwall.com/lists/oss-security/2019/12/02/1

Frequently Asked Questions

What is CVE-2019-19118?
CVE-2019-19118 is a security vulnerability in Django involving Django allows unintended model editing under CWE-276: Incorrect Default Permissions.
Which Django versions are affected?
Affected versions include releases prior to 2.1.15, 2.2.8 across affected packages: Django.
What version fixes CVE-2019-19118?
Upgrading to 2.1.15, 2.2.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Django affected?
Yes, Django is affected in releases prior to 2.1.15, 2.2.8. Upgrade your dependency to 2.1.15, 2.2.8 or later.
What is the CVSS score of CVE-2019-19118?
CVE-2019-19118 has a CVSS v3.1 base score of 6.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2019-19118?
CVE-2019-19118 is classified under CWE-276: Incorrect Default Permissions (During installation, installed file permissions are set to allow anyone to modify those files.).
How can I check PyPI dependencies for CVE-2019-19118?
Run the dependency tree command: 'pip show Django'. 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-hvmf-r92r-27hr",
  "modified" : "2024-11-18T16:26:04Z",
  "published" : "2019-12-04T21:26:28Z",
  "aliases" : [ "CVE-2019-19118" ],
  "summary" : "Django allows unintended model editing",
  "details" : "Django 2.1 before 2.1.15 and 2.2 before 2.2.8 allows unintended model editing. A Django model admin displaying inline related models, where the user has view-only permissions to a parent model but edit permissions to the inline model, would be presented with an editing UI, allowing POST requests, for updating the inline model. Directly editing the view-only parent model was not possible, but the parent model's save() method was called, triggering potential side effects, and causing pre and post-save signal handlers to be invoked. (To resolve this, the Django admin is adjusted to require edit permissions on the parent model in order for inline models to be editable.)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Django"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.1"
      }, {
        "fixed" : "2.1.15"
      } ]
    } ]
  }, {
    "package" : {
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    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
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      }, {
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    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-19118"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/103ebe2b5ff1b2614b85a52c239f471904d26244"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/36f580a17f0b3cb087deadf3b65eea024f479c21"
  }, {
    "type" : "WEB",
    "url" : "https://docs.djangoproject.com/en/dev/releases/security"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-hvmf-r92r-27hr"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/django/django"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2019-15.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://groups.google.com/forum/#!topic/django-announce/GjGqDvtNmWQ"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6R4HD22PVEVQ45H2JA2NXH443AYJOPL5"
  }, {
    "type" : "WEB",
    "url" : "https://security.gentoo.org/glsa/202004-17"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20191217-0003"
  }, {
    "type" : "WEB",
    "url" : "https://www.djangoproject.com/weblog/2019/dec/02/security-releases"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2019/12/02/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-276" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-12-04T19:44:26Z",
    "nvd_published_at" : null
  }
}