medium4.6
CVE-2023-33185
Incorrect signature verification in django-ses
Impact
The django_ses library implements a mail backend for Django using AWS Simple Email Service. The library exports the `SESEventWebhookView class` intended to receive signed requests from AWS to handle email bounces, subscriptions, etc. These requests are signed by AWS and are verified by django_ses, however the verification of this signature was found to be flawed as it allowed users to specify arbitrary public certificates.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | django-ses | < 3.5.0 | 3.5.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Django-Ses Project | Django-Ses | before 3.5.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/django-ses/django-ses/blob/3d627067935876487f9938310d5e1fbb249a7778/CVE/001-cert-url-signature-verification.md
- https://github.com/django-ses/django-ses/commit/b71b5f413293a13997b6e6314086cb9c22629795
- https://github.com/django-ses/django-ses/security/advisories/GHSA-qg36-9jxh-fj25
- https://github.com/advisories/GHSA-qg36-9jxh-fj25
- https://nvd.nist.gov/vuln/detail/CVE-2023-33185
- https://github.com/pypa/advisory-database/tree/main/vulns/django-ses/PYSEC-2023-82.yaml