[4.2.x] Fixed CVE-2024-45231 -- Avoided server error on password reset when email sending fails.

On successful submission of a password reset request, an email is sent
to the accounts known to the system. If sending this email fails (due to
email backend misconfiguration, service provider outage, network issues,
etc.), an attacker might exploit this by detecting which password reset
requests succeed and which ones generate a 500 error response.

Thanks to Thibaut Spriet for the report, and to Mariusz Felisiak, Adam
Johnson, and Sarah Boyce for the reviews.

1 files changed, 12 insertions, 0 deletions

diff --git a/docs/ref/logging.txt b/docs/ref/logging.txt
index b11fb752f7..3d33e0af63 100644
--- a/docs/ref/logging.txt
+++ b/docs/ref/logging.txt
@@ -204,6 +204,18 @@ all database queries.
     Support for logging transaction management queries (``BEGIN``, ``COMMIT``,
     and ``ROLLBACK``) was added.
 
+.. _django-contrib-auth-logger:
+
+``django.contrib.auth``
+~~~~~~~~~~~~~~~~~~~~~~~
+
+.. versionadded:: 4.2.16
+
+Log messages related to :doc:`contrib/auth`, particularly ``ERROR`` messages
+are generated when a :class:`~django.contrib.auth.forms.PasswordResetForm` is
+successfully submitted but the password reset email cannot be delivered due to
+a mail sending exception.
+
 .. _django-security-logger:
 
 ``django.security.*``