CVE-2024-21543 djoser Authentication Bypass
Attackers can bypass two-factor authentication and other custom checks by exploiting a fallback to direct database queries in the djoser library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-21543?
CVE-2024-21543 is a medium-severity authentication bypass vulnerability in djoser, published on 13 Dec 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2024-21543?
3 open source packages ship an affected version, including djoser.
| Package | Affected | Fixed in |
|---|---|---|
djoser PyPI | All versions | 2.3.0 |
djoser PyPI | All versions | 2.3.0 |
djoser PyPI | All versions | 2.3.0 |
How do I fix CVE-2024-21543?
Upgrade djoser to 2.3.0 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2024-21543 being exploited?
There is no known exploitation of CVE-2024-21543 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2024-21543, DLA-4060-1, GHSA-v49p-m6gh-747c, PYSEC-2024-158, UBUNTU-CVE-2024-21543, USN-7354-1.