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CVE-2023-33185

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Date: May 26, 2023

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. Converted from WS-2023-0148, on 2023-05-28.

Language: Python

Severity Score

Related Resources (7)

https://github.com/django-ses/django-ses
https://github.com/pypa/advisory-database/tree/main/vulns/django-ses/PYSEC-2023-82.yaml
https://github.com/django-ses/django-ses/security/advisories/GHSA-qg36-9jxh-fj25
https://github.com/django-ses/django-ses/blob/3d627067935876487f9938310d5e1fbb249a7778/CVE/001-cert-url-signature-verification.md
https://nvd.nist.gov/vuln/detail/CVE-2023-33185
https://github.com/django-ses/django-ses/commit/b71b5f413293a13997b6e6314086cb9c22629795
https://www.mend.io/vulnerability-database/CVE-2023-33185

Severity Score

Weakness Type (CWE)

Improper Verification of Cryptographic Signature

CWE-347

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): LOW

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