CVE-2024-21543: Auth Bypass (CVSS 7.1)

Description

Versions of the package djoser before 2.3.0 are vulnerable to Authentication Bypass when the authenticate() function fails. This is because the system falls back to querying the database directly, granting access to users with valid credentials, and eventually bypassing custom authentication checks such as two-factor authentication, LDAP validations, or requirements from configured AUTHENTICATION_BACKENDS.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Weakness Type (CWE)

CWE-287 Improper Authentication

CWE-295 CWE-295

References

Other References

https://github.com/sunscrapers/djoser/commit/d33c3993c0c735f23cbedc60fa59fce69354f19d https://github.com/sunscrapers/djoser/issues/795 https://github.com/sunscrapers/djoser/pull/819 https://github.com/sunscrapers/djoser/releases/tag/2.3.0 https://security.snyk.io/vuln/SNYK-PYTHON-DJOSER-8366540 https://lists.debian.org/debian-lts-announce/2025/02/msg00023.html

Frequently Asked Questions

What is CVE-2024-21543? +

Versions of the package djoser before 2.3.0 are vulnerable to Authentication Bypass when the authenticate() function fails. This is because the system falls back to querying the database directly, granting access to users with valid credentials, and eventually bypassing custom authentication checks such as two-factor authentication, LDAP validations, or requirements from configured AUTHENTICATION_BACKENDS. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2024-21543? +

CVE-2024-21543 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2024-21543? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-21543