Bug 2054702 - hashlib.algorithms_available lists algorithms that are not available
Summary: hashlib.algorithms_available lists algorithms that are not available
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: python3.9
Version: 9.0
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Charalampos Stratakis
QA Contact: Lukáš Zachar
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-02-15 14:24 UTC by Hubert Kario
Modified: 2022-11-15 13:14 UTC (History)
4 users (show)

Fixed In Version: python3.9-3.9.13-1.el9
Doc Type: No Doc Update
Doc Text:
Clone Of:
Environment:
Last Closed: 2022-11-15 11:20:15 UTC
Type: Bug
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github python cpython pull 32076 0 None open bpo-47101: list only activated algorithms in hashlib.algorithms_available 2022-03-23 14:36:57 UTC
Python 40479 0 None None None 2022-02-15 14:25:53 UTC
Python 47101 0 None None None 2022-03-23 14:36:57 UTC
Red Hat Issue Tracker RHELPLAN-112342 0 None None None 2022-02-15 14:31:12 UTC
Red Hat Product Errata RHSA-2022:8353 0 None None None 2022-11-15 11:20:37 UTC

Description Hubert Kario 2022-02-15 14:24:08 UTC
Description of problem:
The hashlib.algorithms_available set includes algorithms like ripemd160 and whirlpool, those algorithms are not usable unless openssl legacy provider is loaded. Since it's not loaded, and the hashlib module won't load it, any attempt to use them fails.

Version-Release number of selected component (if applicable):
python3-3.9.10-1.el9.x86_64
openssl-3.0.1-5.el9.x86_64

How reproducible:
always

Steps to Reproduce:
0. start python3
1. from hashlib import algorithms_available 
2. algorithms_available
3. import hashlib
4. a = {(name, hashlib.new(name).digest_size) for name in algorithms_available}

Actual results:
{'sha3_384', 'blake2s', 'sha384', 'sha512_224', 'md5', 'sha3_512', 'md5-sha1', 'sha3_256', 'shake_128', 'sm3', 'sha256', 'sha512', 'sha1', 'shake_256', 'blake2b', 'whirlpool', 'sha512_256', 'sha3_224', 'sha224', 'ripemd160', 'md4'}

Traceback (most recent call last):
  File "/usr/lib64/python3.9/hashlib.py", line 164, in __hash_new
    return _hashlib.new(name, data, **kwargs)
ValueError: [digital envelope routines] unsupported

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 1, in <setcomp>
  File "/usr/lib64/python3.9/hashlib.py", line 170, in __hash_new
    return __get_builtin_constructor(name)(data)
  File "/usr/lib64/python3.9/hashlib.py", line 127, in __get_builtin_constructor
    raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type whirlpool


Expected results:
{'sha3_384', 'blake2s', 'sha384', 'sha512_224', 'md5', 'sha3_512', 'md5-sha1', 'sha3_256', 'shake_128', 'sm3', 'sha256', 'sha512', 'sha1', 'shake_256', 'blake2b', 'sha512_256', 'sha3_224', 'sha224'}

{('blake2b', 64), ('sha512', 64), ('md5-sha1', 36), ('sha3_512', 64), ('md5', 16), ('sha224', 28), ('shake_128', 0), ('sm3', 32), ('blake2s', 32), ('sha1', 20), ('shake_256', 0), ('sha512_256', 32), ('sha3_224', 28), ('sha3_256', 32), ('sha3_384', 48), ('sha384', 48), ('sha256', 32), ('sha512_224', 28)}

Additional info:
If the legacy provider is loaded, then the algorithms should be listed and should work.

Comment 1 Hubert Kario 2022-02-15 15:08:56 UTC
It may be caused by Python using the deprecated EVP_MD_do_all() method instead of the EVP_MD_do_all_provided() method

Comment 2 Petr Viktorin 2022-02-23 13:09:17 UTC
Christian, do you want to fix this upstream?

Comment 3 Christian Heimes 2022-03-23 14:36:57 UTC
I have created a new BPO for the issue and a PR.

Hubert, could you please test the PR?

Comment 4 Hubert Kario 2022-03-23 19:04:02 UTC
Seems to work:

# git status
On branch bpo-47101-legacynames
# ./python
Python 3.11.0a6+ (heads/bpo-47101-legacynames:e7a92d981b, Mar 23 2022, 14:32:04) [GCC 11.2.1 20220127 (Red Hat 11.2.1-9)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from hashlib import algorithms_available 
>>> algorithms_available
{'sha3_224', 'sha3_384', 'sha512', 'shake_128', 'sha3_256', 'sha3_512', 'sha256', 'sha1', 'sha224', 'md5', 'blake2b', 'blake2s', 'shake_256', 'sha384'}

Comment 19 errata-xmlrpc 2022-11-15 11:20:15 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: python3.9 security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2022:8353


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