https://github.com/python/cpython/commit/069fefdaf42490f1e00243614fb5f3d5d26... commit: 069fefdaf42490f1e00243614fb5f3d5d2614b81 branch: 3.10 author: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> committer: miss-islington <31488909+miss-islington@users.noreply.github.com> date: 2022-08-30T00:59:56-07:00 summary: gh-95231: Disable md5 & crypt modules if FIPS is enabled (GH-94742) If kernel fips is enabled, we get permission error upon doing `import crypt`. So, if kernel fips is enabled, disable the unallowed hashing methods. Python 3.9.1 (default, May 10 2022, 11:36:26) [GCC 10.2.0] on linux Type "help", "copyright", "credits" or "license" for more information.

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import crypt Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python3.9/crypt.py", line 117, in <module> _add_method('MD5', '1', 8, 34) File "/usr/lib/python3.9/crypt.py", line 94, in _add_method result = crypt('', salt) File "/usr/lib/python3.9/crypt.py", line 82, in crypt return _crypt.crypt(word, salt) PermissionError: [Errno 1] Operation not permitted

Signed-off-by: Shreenidhi Shedi <sshedi@vmware.com> (cherry picked from commit 2fa03b1b0708d5d74630c351ec9abd2aac7550da) Co-authored-by: Shreenidhi Shedi <53473811+sshedi@users.noreply.github.com> files: A Misc/NEWS.d/next/Library/2022-07-25-15-45-06.gh-issue-95231.i807-g.rst M Lib/crypt.py diff --git a/Lib/crypt.py b/Lib/crypt.py index 33dbc46bb3e9..b296c3edb0f5 100644 --- a/Lib/crypt.py +++ b/Lib/crypt.py @@ -94,7 +94,7 @@ def _add_method(name, *args, rounds=None): result = crypt('', salt) except OSError as e: # Not all libc libraries support all encryption methods. - if e.errno == errno.EINVAL: + if e.errno in {errno.EINVAL, errno.EPERM, errno.ENOSYS}: return False raise if result and len(result) == method.total_size: diff --git a/Misc/NEWS.d/next/Library/2022-07-25-15-45-06.gh-issue-95231.i807-g.rst b/Misc/NEWS.d/next/Library/2022-07-25-15-45-06.gh-issue-95231.i807-g.rst new file mode 100644 index 000000000000..aa53f2938bc9 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2022-07-25-15-45-06.gh-issue-95231.i807-g.rst @@ -0,0 +1,3 @@ +Fail gracefully if :data:`~errno.EPERM` or :data:`~errno.ENOSYS` is raised when loading +:mod:`crypt` methods. This may happen when trying to load ``MD5`` on a Linux kernel +with :abbr:`FIPS (Federal Information Processing Standard)` enabled.