CVE-2022-23833: Django Infinite Loop Vulnerability

HIGH
Advisory Identifier: GHSA-6cw3-g6wv-c2xv
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CVSS 7.5
CWE-835
Published
Advisory Summary

CVE-2022-23833 is a HIGH (CVSS 7.5) infinite loop vulnerability (CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')) affecting Django libraries in the PyPI ecosystem. The issue involves infinite loop in django. Remediation is available by upgrading affected packages to version 2.2.27, 3.2.12, 4.0.2.

CVE-2022-23833 at a Glance

CVE Identifier CVE-2022-23833
GHSA Identifier GHSA-6cw3-g6wv-c2xv
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
Affected Product Django
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2022-23833

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: 2.2.27 
pip install Django>=2.2.27
Django fixed: 3.2.12 
pip install Django>=3.2.12
Django fixed: 4.0.2 
pip install Django>=4.0.2
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-2022-23833, 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 2.2.27), 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-835: Loop with Unreachable Exit Condition ('Infinite Loop'), where the product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. 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

An issue was discovered in MultiPartParser in Django 2.2 before 2.2.27, 3.2 before 3.2.12, and 4.0 before 4.0.2. Passing certain inputs to multipart forms could result in an infinite loop when parsing files.

CVE-2022-23833 Affected Django Versions

3 component(s)
Fixed Versions:
2.2.273.2.124.0.2
Product / Package Ecosystem Affected Versions Fixed Version
Django
pypi/Django
PyPI
≥ 2.2
< 2.2.27
2.2.27
Django
pypi/Django
PyPI
≥ 3.2
< 3.2.12
3.2.12
Django
pypi/Django
PyPI
≥ 4.0
< 4.0.2
4.0.2

References

NVD — CVE-2022-23833 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-23833
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/c477b761804984c932704554ad35f78a2e230c6a
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/d16133568ef9c9b42cb7a08bdf9ff3feec2e5468
Security Fix Commit FIX COMMIT
https://github.com/django/django/commit/f9c7d48fdd6f198a6494a9202f90242f176e4fc9
Django Release RELEASE
https://docs.djangoproject.com/en/4.0/releases/security
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-6cw3-g6wv-c2xv
Django Source Repository REPOSITORY
https://github.com/django/django
Django Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2022-20.yaml
groups.google.com/forum/ WEB
https://groups.google.com/forum/#!forum/django-announce
lists.fedoraproject.org/archives/list/packa... WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV
Django Security Information SECURITY
https://security.netapp.com/advisory/ntap-20220221-0003
Django Security Information SECURITY
https://www.debian.org/security/2022/dsa-5254
Django Release RELEASE
https://www.djangoproject.com/weblog/2022/feb/01/security-releases

Frequently Asked Questions

What is CVE-2022-23833?
CVE-2022-23833 is a security vulnerability in Django involving Infinite Loop in Django under CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop').
Which Django versions are affected?
Affected versions include releases prior to 2.2.27, 3.2.12, 4.0.2 across affected packages: Django.
What version fixes CVE-2022-23833?
Upgrading to 2.2.27, 3.2.12, 4.0.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Django affected?
Yes, Django is affected in releases prior to 2.2.27, 3.2.12, 4.0.2. Upgrade your dependency to 2.2.27, 3.2.12, 4.0.2 or later.
What is the CVSS score of CVE-2022-23833?
CVE-2022-23833 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2022-23833?
CVE-2022-23833 is classified under CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') (The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.).
How can I check PyPI dependencies for CVE-2022-23833?
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-6cw3-g6wv-c2xv",
  "modified" : "2024-09-20T15:34:07Z",
  "published" : "2022-02-04T00:00:26Z",
  "aliases" : [ "CVE-2022-23833" ],
  "summary" : "Infinite Loop in Django",
  "details" : "An issue was discovered in MultiPartParser in Django 2.2 before 2.2.27, 3.2 before 3.2.12, and 4.0 before 4.0.2. Passing certain inputs to multipart forms could result in an infinite loop when parsing files.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "Django"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.2"
      }, {
        "fixed" : "2.2.27"
      } ]
    } ]
  }, {
    "package" : {
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    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
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      }, {
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  }, {
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      "name" : "Django"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
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        "fixed" : "4.0.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-23833"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/c477b761804984c932704554ad35f78a2e230c6a"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/d16133568ef9c9b42cb7a08bdf9ff3feec2e5468"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django/django/commit/f9c7d48fdd6f198a6494a9202f90242f176e4fc9"
  }, {
    "type" : "WEB",
    "url" : "https://docs.djangoproject.com/en/4.0/releases/security"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-6cw3-g6wv-c2xv"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/django/django"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2022-20.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://groups.google.com/forum/#!forum/django-announce"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20220221-0003"
  }, {
    "type" : "WEB",
    "url" : "https://www.debian.org/security/2022/dsa-5254"
  }, {
    "type" : "WEB",
    "url" : "https://www.djangoproject.com/weblog/2022/feb/01/security-releases"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-835" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-02-04T16:30:27Z",
    "nvd_published_at" : "2022-02-03T02:15:00Z"
  }
}