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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: python-virtualenv security update
Advisory ID:       RHSA-2020:0851-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:0851
Issue date:        2020-03-17
CVE Names:         CVE-2018-18074 CVE-2018-20060 CVE-2019-11236 
=====================================================================

1. Summary:

An update for python-virtualenv is now available for Red Hat Enterprise
Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client Optional (v. 7) - noarch
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch
Red Hat Enterprise Linux Server (v. 7) - noarch
Red Hat Enterprise Linux Workstation (v. 7) - noarch

3. Description:

The virtualenv tool creates isolated Python environments. The virtualenv
tool is a successor to workingenv, and an extension of virtual-python.

Security Fix(es):

* python-urllib3: Cross-host redirect does not remove Authorization header
allow for credential exposure (CVE-2018-20060)

* python-urllib3: CRLF injection due to not encoding the '\r\n' sequence
leading to possible attack on internal service (CVE-2019-11236)

* python-requests: Redirect from HTTPS to HTTP does not remove
Authorization header (CVE-2018-18074)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1643829 - CVE-2018-18074 python-requests: Redirect from HTTPS to HTTP does not remove Authorization header
1649153 - CVE-2018-20060 python-urllib3: Cross-host redirect does not remove Authorization header allow for credential exposure
1700824 - CVE-2019-11236 python-urllib3: CRLF injection due to not encoding the '\r\n' sequence leading to possible attack on internal service

6. Package List:

Red Hat Enterprise Linux Client Optional (v. 7):

Source:
python-virtualenv-15.1.0-4.el7_7.src.rpm

noarch:
python-virtualenv-15.1.0-4.el7_7.noarch.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

Source:
python-virtualenv-15.1.0-4.el7_7.src.rpm

noarch:
python-virtualenv-15.1.0-4.el7_7.noarch.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
python-virtualenv-15.1.0-4.el7_7.src.rpm

noarch:
python-virtualenv-15.1.0-4.el7_7.noarch.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
python-virtualenv-15.1.0-4.el7_7.src.rpm

noarch:
python-virtualenv-15.1.0-4.el7_7.noarch.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2018-18074
https://access.redhat.com/security/cve/CVE-2018-20060
https://access.redhat.com/security/cve/CVE-2019-11236
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2020 Red Hat, Inc.
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