CVE-2022-39227 Python-jwt subject to Authentication Bypass by Spoofing
Attackers can forge JWT contents to spoof identities, hijack sessions, or bypass authentication in applications using this library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-39227?
CVE-2022-39227 is a critical authentication bypass vulnerability in davedoesdev python-jwt, published on 23 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
python-jwt is a module for generating and verifying JSON Web Tokens. Versions prior to 3.3.4 are subject to Authentication Bypass by Spoofing, resulting in identity spoofing, session hijacking or authentication bypass. An attacker who obtains a JWT can arbitrarily forge its contents without knowing the secret key. Depending on the application, this may for example enable the attacker to spoof other user's identities, hijack their sessions, or bypass authentication. Users should upgrade to version 3.3.4. There are no known workarounds.
Weakness: CWE-290
Which versions are affected by CVE-2022-39227?
3 open source packages ship an affected version, including python-jwt. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
python-jwt PyPI | All versions | 3.3.4 |
python-jwt PyPI | All versions | 3.3.4 |
python-jwt PyPI | From 3.0.0 | 3.3.4 |
Products include Python-Jwt Project Python-Jwt.
How do I fix CVE-2022-39227?
Upgrade python-jwt to 3.3.4 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2022-39227 being exploited?
There is no known exploitation of CVE-2022-39227 in the wild and no public exploit code.
Public exploit code: 3 proofs of concept on GitHub.
Sources
Also known as AZL-11032, GHSA-5p8v-58qm-c7fp, PYSEC-2022-259.