CVE-2024-33663: Python jose Python-jose Algorithm Confusion With OpenSSH Vulnerability

CRITICAL
Advisory Identifier: GHSA-6c5p-j8vq-pqhj
Share
CVSS 7.4
CWE-327
Published
Advisory Summary

CVE-2024-33663 is a CRITICAL (CVSS 7.4) python-jose algorithm confusion with openssh vulnerability (CWE-327: Use of a Broken or Risky Cryptographic Algorithm) affecting Python jose libraries in the PyPI ecosystem. The issue involves python-jose algorithm confusion with openssh ecdsa keys. Remediation is available by upgrading affected packages to version 3.4.0.

CVE-2024-33663 at a Glance

CVE Identifier CVE-2024-33663
GHSA Identifier GHSA-6c5p-j8vq-pqhj
Severity CRITICAL
CVSS v3.1 Base Score 7.4
CWE Classification CWE-327: Use of a Broken or Risky Cryptographic Algorithm
Affected Product Python jose
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.4

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

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

How to Fix CVE-2024-33663

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-2024-33663, 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-327: Use of a Broken or Risky Cryptographic Algorithm, where the product uses a broken or risky cryptographic algorithm or protocol. 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 has algorithm confusion with OpenSSH ECDSA keys and other key formats. This is similar to CVE-2022-29217.

CVE-2024-33663 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-2024-33663 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-33663
Python jose Source Repository REPOSITORY
https://github.com/mpdavis/python-jose/issues/346
Python jose Source Repository REPOSITORY
https://github.com/mpdavis/python-jose
Python jose Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/python-jose/PYSEC-2024-232.yaml
www.vicarius.io/vsociety/posts/algo... WEB
https://www.vicarius.io/vsociety/posts/algorithm-confusion-in-python-jose-cve-2024-33663

Frequently Asked Questions

What is CVE-2024-33663?
CVE-2024-33663 is a security vulnerability in Python jose involving python-jose algorithm confusion with OpenSSH ECDSA keys under CWE-327: Use of a Broken or Risky Cryptographic Algorithm.
Which Python jose versions are affected?
Affected versions include releases prior to 3.4.0 across affected packages: python-jose.
What version fixes CVE-2024-33663?
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-2024-33663?
CVE-2024-33663 has a CVSS v3.1 base score of 7.4 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2024-33663?
CVE-2024-33663 is classified under CWE-327: Use of a Broken or Risky Cryptographic Algorithm (The product uses a broken or risky cryptographic algorithm or protocol.).
How can I check PyPI dependencies for CVE-2024-33663?
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-6c5p-j8vq-pqhj",
  "modified" : "2025-02-18T22:48:15Z",
  "published" : "2024-04-26T00:30:35Z",
  "aliases" : [ "CVE-2024-33663" ],
  "summary" : "python-jose algorithm confusion with OpenSSH ECDSA keys",
  "details" : "python-jose through 3.3.0 has algorithm confusion with OpenSSH ECDSA keys and other key formats. This is similar to CVE-2022-29217.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
  } ],
  "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-2024-33663"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mpdavis/python-jose/issues/346"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mpdavis/python-jose"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/python-jose/PYSEC-2024-232.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://www.vicarius.io/vsociety/posts/algorithm-confusion-in-python-jose-cve-2024-33663"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-327" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-26T16:57:59Z",
    "nvd_published_at" : "2024-04-26T00:15:09Z"
  }
}