Fixed #28401 -- Allowed hashlib.md5() calls to work with FIPS kernels.

md5 is not an approved algorithm in FIPS mode, and trying to instantiate
a hashlib.md5() will fail when the system is running in FIPS mode.

md5 is allowed when in a non-security context. There is a plan to add a
keyword parameter (usedforsecurity) to hashlib.md5() to annotate whether
or not the instance is being used in a security context.

In the case where it is not, the instantiation of md5 will be allowed.
See https://bugs.python.org/issue9216 for more details.

Some downstream python versions already support this parameter. To
support these versions, a new encapsulation of md5() has been added.
This encapsulation will pass through the usedforsecurity parameter in
the case where the parameter is supported, and strip it if it is not.

Co-authored-by: Mariusz Felisiak <felisiak.mariusz@gmail.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/django/db/backends/sqlite3/base.py b/django/db/backends/sqlite3/base.py
index ddf5f40c8e..666b367be7 100644
--- a/django/db/backends/sqlite3/base.py
+++ b/django/db/backends/sqlite3/base.py
@@ -22,6 +22,7 @@ from django.db.backends.base.base import (
 )
 from django.utils import timezone
 from django.utils.asyncio import async_unsafe
+from django.utils.crypto import md5
 from django.utils.dateparse import parse_datetime, parse_time
 from django.utils.duration import duration_microseconds
 from django.utils.regex_helper import _lazy_re_compile
@@ -233,7 +234,7 @@ class DatabaseWrapper(BaseDatabaseWrapper):
         create_deterministic_function('LN', 1, none_guard(math.log))
         create_deterministic_function('LOG', 2, none_guard(lambda x, y: math.log(y, x)))
         create_deterministic_function('LPAD', 3, _sqlite_lpad)
-        create_deterministic_function('MD5', 1, none_guard(lambda x: hashlib.md5(x.encode()).hexdigest()))
+        create_deterministic_function('MD5', 1, none_guard(lambda x: md5(x.encode()).hexdigest()))
         create_deterministic_function('MOD', 2, none_guard(math.fmod))
         create_deterministic_function('PI', 0, lambda: math.pi)
         create_deterministic_function('POWER', 2, none_guard(operator.pow))