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Red Hat Security Advisory 2021-4057-01

Red Hat Security Advisory 2021-4057-01
Posted Nov 2, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4057-01 - Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Issues addressed include a denial of service vulnerability.

tags | advisory, denial of service, python
systems | linux, redhat
advisories | CVE-2021-3733
MD5 | 39c23ecee2e539fa8f746c5d051985d5

Red Hat Security Advisory 2021-4057-01

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

Synopsis: Moderate: python3 security update
Advisory ID: RHSA-2021:4057-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4057
Issue date: 2021-11-02
CVE Names: CVE-2021-3733
=====================================================================

1. Summary:

An update for python3 is now available for Red Hat Enterprise Linux 8.

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 AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

Python is an interpreted, interactive, object-oriented programming
language, which includes modules, classes, exceptions, very high level
dynamic data types and dynamic typing. Python supports interfaces to many
system calls and libraries, as well as to various windowing systems.

Security Fix(es):

* python: urllib: Regular expression DoS in AbstractBasicAuthHandler
(CVE-2021-3733)

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/):

1995234 - CVE-2021-3733 python: urllib: Regular expression DoS in AbstractBasicAuthHandler

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

aarch64:
platform-python-debug-3.6.8-39.el8_4.aarch64.rpm
platform-python-devel-3.6.8-39.el8_4.aarch64.rpm
python3-debuginfo-3.6.8-39.el8_4.aarch64.rpm
python3-debugsource-3.6.8-39.el8_4.aarch64.rpm
python3-idle-3.6.8-39.el8_4.aarch64.rpm
python3-tkinter-3.6.8-39.el8_4.aarch64.rpm

ppc64le:
platform-python-debug-3.6.8-39.el8_4.ppc64le.rpm
platform-python-devel-3.6.8-39.el8_4.ppc64le.rpm
python3-debuginfo-3.6.8-39.el8_4.ppc64le.rpm
python3-debugsource-3.6.8-39.el8_4.ppc64le.rpm
python3-idle-3.6.8-39.el8_4.ppc64le.rpm
python3-tkinter-3.6.8-39.el8_4.ppc64le.rpm

s390x:
platform-python-debug-3.6.8-39.el8_4.s390x.rpm
platform-python-devel-3.6.8-39.el8_4.s390x.rpm
python3-debuginfo-3.6.8-39.el8_4.s390x.rpm
python3-debugsource-3.6.8-39.el8_4.s390x.rpm
python3-idle-3.6.8-39.el8_4.s390x.rpm
python3-tkinter-3.6.8-39.el8_4.s390x.rpm

x86_64:
platform-python-3.6.8-39.el8_4.i686.rpm
platform-python-debug-3.6.8-39.el8_4.i686.rpm
platform-python-debug-3.6.8-39.el8_4.x86_64.rpm
platform-python-devel-3.6.8-39.el8_4.i686.rpm
platform-python-devel-3.6.8-39.el8_4.x86_64.rpm
python3-debuginfo-3.6.8-39.el8_4.i686.rpm
python3-debuginfo-3.6.8-39.el8_4.x86_64.rpm
python3-debugsource-3.6.8-39.el8_4.i686.rpm
python3-debugsource-3.6.8-39.el8_4.x86_64.rpm
python3-idle-3.6.8-39.el8_4.i686.rpm
python3-idle-3.6.8-39.el8_4.x86_64.rpm
python3-test-3.6.8-39.el8_4.i686.rpm
python3-tkinter-3.6.8-39.el8_4.i686.rpm
python3-tkinter-3.6.8-39.el8_4.x86_64.rpm

Red Hat Enterprise Linux BaseOS (v. 8):

Source:
python3-3.6.8-39.el8_4.src.rpm

aarch64:
platform-python-3.6.8-39.el8_4.aarch64.rpm
python3-debuginfo-3.6.8-39.el8_4.aarch64.rpm
python3-debugsource-3.6.8-39.el8_4.aarch64.rpm
python3-libs-3.6.8-39.el8_4.aarch64.rpm
python3-test-3.6.8-39.el8_4.aarch64.rpm

ppc64le:
platform-python-3.6.8-39.el8_4.ppc64le.rpm
python3-debuginfo-3.6.8-39.el8_4.ppc64le.rpm
python3-debugsource-3.6.8-39.el8_4.ppc64le.rpm
python3-libs-3.6.8-39.el8_4.ppc64le.rpm
python3-test-3.6.8-39.el8_4.ppc64le.rpm

s390x:
platform-python-3.6.8-39.el8_4.s390x.rpm
python3-debuginfo-3.6.8-39.el8_4.s390x.rpm
python3-debugsource-3.6.8-39.el8_4.s390x.rpm
python3-libs-3.6.8-39.el8_4.s390x.rpm
python3-test-3.6.8-39.el8_4.s390x.rpm

x86_64:
platform-python-3.6.8-39.el8_4.x86_64.rpm
python3-debuginfo-3.6.8-39.el8_4.i686.rpm
python3-debuginfo-3.6.8-39.el8_4.x86_64.rpm
python3-debugsource-3.6.8-39.el8_4.i686.rpm
python3-debugsource-3.6.8-39.el8_4.x86_64.rpm
python3-libs-3.6.8-39.el8_4.i686.rpm
python3-libs-3.6.8-39.el8_4.x86_64.rpm
python3-test-3.6.8-39.el8_4.x86_64.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-2021-3733
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 2021 Red Hat, Inc.
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