CVE-2024-33664: Python jose Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-cjwg-qfpm-7377
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CVSS 5.3
CWE-400
Published
Advisory Summary

CVE-2024-33664 is a MODERATE (CVSS 5.3) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Python jose libraries in the PyPI ecosystem. The issue involves python-jose denial of service via compressed jwe content. Remediation is available by upgrading affected packages to version 3.4.0.

CVE-2024-33664 at a Glance

CVE Identifier CVE-2024-33664
GHSA Identifier GHSA-cjwg-qfpm-7377
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Python jose
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:L).

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 Low (A:L)

How to Fix CVE-2024-33664

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

python-jose fixed: 3.4.0 
pip install python-jose>=3.4.0
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 python-jose

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-33664, inspect your installed packages using pip:

pip show python-jose

Analyze the terminal output to locate any version of Python jose in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.4.0), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Python jose, 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

python-jose through 3.3.0 allows attackers to cause a denial of service (resource consumption) during a decode via a crafted JSON Web Encryption (JWE) token with a high compression ratio, aka a "JWT bomb." This is similar to CVE-2024-21319.

CVE-2024-33664 Affected Python jose Versions

1 component(s)
Fixed Versions:
3.4.0
Product / Package Ecosystem Affected Versions Fixed Version
python-jose
pypi/python-jose
PyPI
< 3.4.0
3.4.0

References

NVD — CVE-2024-33664 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-33664
Python jose Source Repository REPOSITORY
https://github.com/mpdavis/python-jose/issues/344
Python jose Source Repository REPOSITORY
https://github.com/mpdavis/python-jose/pull/345
Python jose Source Repository REPOSITORY
https://github.com/mpdavis/python-jose
Python jose Release RELEASE
https://github.com/mpdavis/python-jose/releases/tag/3.4.0
Python jose Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/python-jose/PYSEC-2024-233.yaml
www.vicarius.io/vsociety/posts/jwt-... WEB
https://www.vicarius.io/vsociety/posts/jwt-bomb-in-python-jose-cve-2024-33664

Frequently Asked Questions

What is CVE-2024-33664?
CVE-2024-33664 is a security vulnerability in Python jose involving python-jose denial of service via compressed JWE content under CWE-400: Uncontrolled Resource Consumption.
Which Python jose versions are affected?
Affected versions include releases prior to 3.4.0 across affected packages: python-jose.
What version fixes CVE-2024-33664?
Upgrading to 3.4.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is python-jose affected?
Yes, python-jose is affected in releases prior to 3.4.0. Upgrade your dependency to 3.4.0 or later.
What is the CVSS score of CVE-2024-33664?
CVE-2024-33664 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2024-33664?
CVE-2024-33664 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check PyPI dependencies for CVE-2024-33664?
Run the dependency tree command: 'pip show python-jose'. 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-cjwg-qfpm-7377",
  "modified" : "2025-02-18T22:46:48Z",
  "published" : "2024-04-26T00:30:35Z",
  "aliases" : [ "CVE-2024-33664" ],
  "summary" : "python-jose denial of service via compressed JWE content",
  "details" : "python-jose through 3.3.0 allows attackers to cause a denial of service (resource consumption) during a decode via a crafted JSON Web Encryption (JWE) token with a high compression ratio, aka a \"JWT bomb.\" This is similar to CVE-2024-21319.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "python-jose"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-33664"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mpdavis/python-jose/issues/344"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mpdavis/python-jose/pull/345"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mpdavis/python-jose"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mpdavis/python-jose/releases/tag/3.4.0"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/python-jose/PYSEC-2024-233.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://www.vicarius.io/vsociety/posts/jwt-bomb-in-python-jose-cve-2024-33664"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-26T16:58:04Z",
    "nvd_published_at" : "2024-04-26T00:15:09Z"
  }
}