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GeezerVison is showing github.com — [3.11] gh-118224: Load default OpenSSL provider for nonsecurity algorithms (GH-118236) by xnox · Pull Request #118239 · python/cpython

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@xnox

@xnox xnox commented Apr 24, 2024 •
edited by bedevere-app Bot
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When OpenSSL is configured to only load "base+fips" providers into the Null library context, md5 might not be available at all. In such cases currently CPython fallsback to internal hashlib implementation is there is one - as there might not be if one compiles python with --with-builtin-hashlib-hashes=blake2. With this change "default" provider is attempted to be loaded to access nonsecurity hashes.

  • Issue: Fallback md5 is used, when trying hard to only use OpenSSL #118224

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@xnox
[3.11] pythongh-118224: Load default OpenSSL provider for nonsecurity…
d39e2a4 
… algorithms

When OpenSSL is configured to only load "base+fips" providers into the
Null library context, md5 might not be available at all. In such cases
currently CPython fallsback to internal hashlib implementation is
there is one - as there might not be if one compiles python with
--with-builtin-hashlib-hashes=blake2. With this change "default"
provider is attempted to be loaded to access nonsecurity hashes.
@bedevere-app bedevere-app Bot mentioned this pull request Apr 24, 2024
Fallback md5 is used, when trying hard to only use OpenSSL #118224
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@bedevere-app

bedevere-app Bot commented Apr 24, 2024

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Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.
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@bedevere-app bedevere-app Bot mentioned this pull request Apr 24, 2024
gh-118224: Load default OpenSSL provider for nonsecurity algorithms #118236
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@bedevere-app bedevere-app Bot added the awaiting review label Apr 24, 2024
@xnox
Add blurb
15b95f2
@xnox
xnox force-pushed the 3.11-fix-nodefault-md5 branch from ec55dc6 to 15b95f2 Compare April 24, 2024 22:42
@encukou

encukou commented May 7, 2024

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This is not fixing a security issue, so it should not be backported to 3.11.
In general, please only open backport PRs after the main one is merged.
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@encukou encukou closed this May 7, 2024
@xnox

xnox commented May 7, 2024

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This is not fixing a security issue, so it should not be backported to 3.11. In general, please only open backport PRs after the main one is merged.

It is FedRAMP/FIPS compliance by-pass. This issue may allow using md5 without specifying "useforsecurity=False" on systems otherwise configured to be in FIPS-mode only. And is the primary reason why documentation mentions that certain distributions of python remove md5 module altogether.

Sure will wait for the main one to be merged.
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@xnox @encukou
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