mfa/FIDO2.py in django-mfa2 before 2.5.1 and 2.6.x before 2.6.1 allows a replay attack that could be used to register another device for a user. The device registration challenge is not invalidated after usage.
References
- https://nvd.nist.gov/vuln/detail/CVE-2022-42731
- https://github.com/mkalioby/django-mfa2/blob/0936ea253354dd95cb127f09d0efa31324caef27/mfa/FIDO2.py#L58
- https://github.com/mkalioby/django-mfa2/releases/tag/v2.5.1-release
- https://github.com/mkalioby/django-mfa2/releases/tag/v2.6.1-release
- https://github.com/pypa/advisory-database/tree/main/vulns/django-mfa2/PYSEC-2022-303.yaml
- https://github.com/advisories/GHSA-vw39-2wj9-4q86