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Red Hat Security Advisory

Synopsis: Low: python-waitress security update
Advisory ID: RHSA-2020:0720-01
Product: Red Hat OpenStack Platform
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0720
Issue date: 2020-03-05
CVE Names: CVE-2019-16785 CVE-2019-16786 CVE-2019-16789
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1. Summary:

An update for python-waitress is now available for Red Hat OpenStack
Platform 15 (Stein).

Red Hat Product Security has rated this update as having a security impact
of Low. 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 OpenStack Platform 15.0 – noarch

3. Description:

Waitress is a pure Python WSGI server which supports HTTP/1.0 and HTTP/1.1.

Security Fix(es):

* HTTP request smuggling through LF vs CRLF handling (CVE-2019-16785)

* HTTP request smuggling through invalid Transfer-Encoding (CVE-2019-16786)

* HTTP Request Smuggling through Invalid whitespace characters in headers
(CVE-2019-16789)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page 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/):

1789807 – CVE-2019-16789 waitress: HTTP Request Smuggling through Invalid whitespace characters in headers
1791415 – CVE-2019-16786 waitress: HTTP request smuggling through invalid Transfer-Encoding
1791420 – CVE-2019-16785 waitress: HTTP request smuggling through LF vs CRLF handling

6. Package List:

Red Hat OpenStack Platform 15.0:

Source:
python-waitress-1.4.2-1.el8ost.src.rpm

noarch:
python3-waitress-1.4.2-1.el8ost.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-2019-16785
https://access.redhat.com/security/cve/CVE-2019-16786
https://access.redhat.com/security/cve/CVE-2019-16789
https://access.redhat.com/security/updates/classification/#low

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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