From 8f0b2e12cc43edc2737debf8760ee7f76cdd5a67 Mon Sep 17 00:00:00 2001
From: Petr Viktorin <encukou@gmail.com>
Date: Fri, 6 Sep 2024 11:43:30 +0200
Subject: [PATCH] [3.12] [CVE-2023-27043] gh-102988: Reject malformed addresses
 in email.parseaddr() (GH-111116)

Detect email address parsing errors and return empty tuple to
indicate the parsing error (old API). Add an optional 'strict'
parameter to getaddresses() and parseaddr() functions. Patch by
Thomas Dwyer.

(cherry picked from commit 4a153a1d3b18803a684cd1bcc2cdf3ede3dbae19)

Co-authored-by: Victor Stinner <vstinner@python.org>
Co-Authored-By: Thomas Dwyer <github@tomd.tel>