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Bug 1984046 - python-oauthlib depends on jwt for RSA
Summary: python-oauthlib depends on jwt for RSA
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: python-oauthlib
Version: 9.0
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: beta
: ---
Assignee: Tomas Halman
QA Contact: Scott Poore
URL:
Whiteboard:
Depends On: 2117590
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-07-20 13:52 UTC by Scott Poore
Modified: 2023-05-09 08:42 UTC (History)
2 users (show)

Fixed In Version: python-oauthlib-3.1.1-5.el9
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2023-05-09 07:38:28 UTC
Type: Bug
Target Upstream Version:
Embargoed:
pm-rhel: mirror+

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker SSSD-3703 0 None None None 2021-08-04 12:03:57 UTC
Red Hat Product Errata RHBA-2023:2247 0 None None None 2023-05-09 07:38:32 UTC

Description Scott Poore 2021-07-20 13:52:50 UTC 
Description of problem:

While testing another bug, we found that there is a leftover dependency on jwt still in python-oauthlib.

Trying to sign with an RSA-SHA256 key fails because the missing dependency isn't installed:

[root@rhel9 ~]# python test.py 
Traceback (most recent call last):
  File "/root/test.py", line 4, in <module>
    Client('client_key',
  File "/usr/lib/python3.9/site-packages/oauthlib/oauth1/rfc5849/__init__.py", line 353, in sign
    ('oauth_signature', self.get_oauth_signature(request)))
  File "/usr/lib/python3.9/site-packages/oauthlib/oauth1/rfc5849/__init__.py", line 188, in get_oauth_signature
    sig = self.SIGNATURE_METHODS[self.signature_method](base_string, self)
  File "/usr/lib/python3.9/site-packages/oauthlib/oauth1/rfc5849/signature.py", line 743, in sign_rsa_sha256_with_client
    return _sign_rsa('SHA-256', sig_base_str, client.rsa_key)
  File "/usr/lib/python3.9/site-packages/oauthlib/oauth1/rfc5849/signature.py", line 616, in _sign_rsa
    alg = _get_jwt_rsa_algorithm(hash_algorithm_name)
  File "/usr/lib/python3.9/site-packages/oauthlib/oauth1/rfc5849/signature.py", line 562, in _get_jwt_rsa_algorithm
    import jwt.algorithms as jwt_algorithms
ModuleNotFoundError: No module named 'jwt'


Version-Release number of selected component (if applicable):
python3-oauthlib-3.1.1-1.el9.noarch

How reproducible:
always

Steps to Reproduce:
1.  dnf -y install python3-oauthlib
2.  make simple test script using library

[root@rhel9 ~]# cat test.py
import oauthlib
from oauthlib.oauth1 import Client

Client('client_key',
       signature_method='RSA-SHA256',
       rsa_key='',
       timestamp='1234567890',
       nonce='abc').sign('http://example.com')

3.  python test-rsa.py

Actual results:
returns module import error shown above.

Expected results:
this particular test won't do much but show this error.  we can use a more complete test script to test that things work properly.  FYI, this just means adding rsa_key into script.

Additional info:
Comment 1 Jakub Hrozek 2021-07-28 13:44:47 UTC 
I think the only reasonable thing to do is to remove the rest of the RSA-* based signature methods. The RFC only prescribes RSA-SHA1 which is not permitted in RHEL-9. python-oauthlib adds also RSA-SHA256 and others, but those are not standard. In the real world, it's mostly HMAC-SHA1 that I've seen used anyway.
Comment 7 Scott Poore 2022-11-18 15:08:13 UTC 
Verified

Version ::

[root@hostname1 ~]# rpm -q python3-oauthlib
python3-oauthlib-3.1.1-5.el9.noarch

[root@hostname1 ~]# dnf list python3-oauthlib
Last metadata expiration check: 0:53:29 ago on Fri Nov 18 09:10:28 2022.
Installed Packages
python3-oauthlib.noarch                         3.1.1-5.el9                         @rhel-9.2-AppStream

Results ::

[root@hostname1 ~]# cat test-rsa-sha256.py 
import oauthlib
from oauthlib.oauth1 import Client

Client('client_key',
       signature_method='RSA-SHA256',
       rsa_key='',
       timestamp='1234567890',
       nonce='abc').sign('http://example.com')

[root@hostname1 ~]# python test-rsa-sha256.py 
Traceback (most recent call last):
  File "/root/test-rsa-sha256.py", line 4, in <module>
    Client('client_key',
  File "/usr/lib/python3.9/site-packages/oauthlib/oauth1/rfc5849/__init__.py", line 353, in sign
    ('oauth_signature', self.get_oauth_signature(request)))
  File "/usr/lib/python3.9/site-packages/oauthlib/oauth1/rfc5849/__init__.py", line 188, in get_oauth_signature
    sig = self.SIGNATURE_METHODS[self.signature_method](base_string, self)
  File "/usr/lib/python3.9/site-packages/oauthlib/oauth1/rfc5849/signature.py", line 755, in sign_rsa_sha256_with_client
    return _sign_rsa('SHA-256', sig_base_str, client.rsa_key)
  File "/usr/lib/python3.9/site-packages/oauthlib/oauth1/rfc5849/signature.py", line 626, in _sign_rsa
    raise ValueError('Invalid signature method.')
ValueError: Invalid signature method.


Expected failure ^^

[root@hostname1 ~]# cat test-hmac-sha1.py 
import oauthlib
from oauthlib.oauth1 import Client

Client('client_key',
       signature_method='HMAC-SHA1',
       timestamp='1234567890',
       nonce='abc').sign('http://example.com')
[root@hostname1 ~]# python test-hmac-sha1.py 
[root@hostname1 ~]# echo $?
0
Comment 10 errata-xmlrpc 2023-05-09 07:38:28 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 (python-oauthlib 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/RHBA-2023:2247
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