CVE-2023-33185 Incorrect signature verification in django-ses
Attackers can bypass AWS signature verification in django-ses by specifying arbitrary public certificates, allowing unauthorized webhook requests.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-33185?
CVE-2023-33185 is a medium-severity vulnerability in django-ses, published on 26 May 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Django-SES is a drop-in mail backend for Django. 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. This issue was patched in version 3.5.0.
Weakness: CWE-347
Which versions are affected by CVE-2023-33185?
3 open source packages ship an affected version, including django-ses. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
django-ses PyPI | All versions | 3.5.0 |
django-ses PyPI | All versions | 3.5.0 |
django-ses PyPI | All versions | 3.5.0 |
Products include Django-Ses Project Django-Ses.
How do I fix CVE-2023-33185?
Upgrade django-ses to 3.5.0 or later.
Is CVE-2023-33185 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-33185 exists.
Sources
Also known as GHSA-qg36-9jxh-fj25, PYSEC-2023-82.