Vulnerability · Published Sep 23, 2022 · Assigned by GitHub_M
CVE-2022-39227Python-jwt subject to Authentication Bypass by Spoofing
Critical 9.1
In plain English
A critical-severity authentication bypass by spoofing in python-jwt from davedoesdev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 5.3% (higher than 93% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | python-jwt | 3.3.4 | GHSA-5p8v-58qm-c7fp |
| PyPI | python-jwt | 3.3.4 | PYSEC-2022-259 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| davedoesdev | python-jwt | < 3.3.4 |
Weakness: CWE-290 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- https://github.com/davedoesdev/python-jwt/security/advisories/GHSA-5p8v-58qm-c7fp
- https://github.com/davedoesdev/python-jwt/commit/88ad9e67c53aa5f7c43ec4aa52ed34b7930068c9
- https://github.com/pypa/advisory-database/blob/main/vulns/python-jwt/PYSEC-2022-259.yaml
- https://www.vicarius.io/vsociety/posts/authentication-bypass-in-python-jwt