Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

+++ This bug was initially created as a clone of Bug #1371901 +++

Description of problem:

A security in python-jwcrypto was found. The jwcrypto implementation of the RSA1_5 algorithm is vulnerable to the Million Message Attack described in RFC 3128. RSA with PKCS1v1.5 is used by Custodia and ipapython.secrets


Version-Release number of selected component (if applicable):
<= 0.3


Additional info:
Upstream bug report: https://github.com/latchset/jwcrypto/pull/66
Upstream fix: https://github.com/latchset/jwcrypto/pull/66

The patch is available upstream
https://github.com/latchset/custodia/pull/70

Patch for FreeIPA: https://github.com/freeipa/freeipa/pull/56

# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 7.3 Beta (Maipo)

# rpm -qi python-jwcrypto
Name        : python-jwcrypto
Version     : 0.2.1
Release     : 1.el7
Architecture: noarch
Install Date: Mon 12 Sep 2016 05:30:24 PM IST
Group       : Unspecified
Size        : 166061
License     : LGPLv3+
Signature   : RSA/SHA256, Thu 28 Jul 2016 12:42:57 PM IST, Key ID 938a80caf21541eb
Source RPM  : python-jwcrypto-0.2.1-1.el7.src.rpm
Build Date  : Sat 02 Apr 2016 05:24:19 PM IST
Build Host  : ppc-021.build.eng.bos.redhat.com
Relocations : (not relocatable)
Packager    : Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla>
Vendor      : Red Hat, Inc.
URL         : https://github.com/simo5/jwcrypto
Summary     : Implements JWK,JWS,JWE specifications using python-cryptography
Description :
Implements JWK,JWS,JWE specifications using python-cryptography

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, 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://rhn.redhat.com/errata/RHEA-2016-2287.html