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Red Hat Enterprise Linux 8: RHSA-2020-4433-01 Python3 Security Update

red hat
Calendar Grey November 3, 2020
Dist Redhat Esm H88
This notice pertains to a significant security enhancement for Python3 regarding RHEL 8, emphasizing multiple essential corrections.
An update for python3 is now available for Red Hat Enterprise Linux 8

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

Summary

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: XSS vulnerability in the documentation XML-RPC server in server_title field (CVE-2019-16935)
* python: infinite loop in the tarfile module via crafted TAR archive (CVE-2019-20907)
* python: wrong backtracking in urllib.request.AbstractBasicAuthHandler allows for a ReDoS (CVE-2020-8492)
* python: DoS via inefficiency in IPv{4,6}Interface classes (CVE-2020-14422)
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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.3 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat XSS DoS security fix python3

References

https://access.redhat.com/security/cve/CVE-2019-16935 https://access.redhat.com/security/cve/CVE-2019-20907 https://access.redhat.com/security/cve/CVE-2020-8492 https://access.redhat.com/security/cve/CVE-2020-14422 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/8.3_release_notes/index

Package List

Red Hat Enterprise Linux AppStream (v. 8):
aarch64: platform-python-debug-3.6.8-31.el8.aarch64.rpm platform-python-devel-3.6.8-31.el8.aarch64.rpm python3-debuginfo-3.6.8-31.el8.aarch64.rpm python3-debugsource-3.6.8-31.el8.aarch64.rpm python3-idle-3.6.8-31.el8.aarch64.rpm python3-tkinter-3.6.8-31.el8.aarch64.rpm
ppc64le: platform-python-debug-3.6.8-31.el8.ppc64le.rpm platform-python-devel-3.6.8-31.el8.ppc64le.rpm python3-debuginfo-3.6.8-31.el8.ppc64le.rpm python3-debugsource-3.6.8-31.el8.ppc64le.rpm python3-idle-3.6.8-31.el8.ppc64le.rpm python3-tkinter-3.6.8-31.el8.ppc64le.rpm
s390x: platform-python-debug-3.6.8-31.el8.s390x.rpm platform-python-devel-3.6.8-31.el8.s390x.rpm python3-debuginfo-3.6.8-31.el8.s390x.rpm python3-debugsource-3.6.8-31.el8.s390x.rpm python3-idle-3.6.8-31.el8.s390x.rpm python3-tkinter-3.6.8-31.el8.s390x.rpm
x86_64: platform-python-3.6.8-31.el8.i686.rpm platform-python-debug-3.6.8-31.el8.i686.rpm platform-python-debug-3.6.8-31.el8.x86_64.rpm platform-python-devel-3.6.8-31.el8.i686.rpm platform-python-devel-3.6.8-31.el8.x86_64.rpm python3-debuginfo-3.6.8-31.el8.i686.rpm python3-debuginfo-3.6.8-31.el8.x86_64.rpm python3-debugsource-3.6.8-31.el8.i686.rpm python3-debugsource-3.6.8-31.el8.x86_64.rpm python3-idle-3.6.8-31.el8.i686.rpm

Read the Full Advisory


Advisory ID: RHSA-2020:4433-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4433
Issue date: 2020-11-03

Topic

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 impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat XSS DoS security fix python3

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

Bugs Fixed

1724996 - Speed up Python with -fno-semantic-interposition

1763229 - CVE-2019-16935 python: XSS vulnerability in the documentation XML-RPC server in server_title field

1772992 - python3-config --configdir incorrect

1809065 - CVE-2020-8492 python: wrong backtracking in urllib.request.AbstractBasicAuthHandler allows for a ReDoS

1814392 - test_site is failing on an installed python3

1851090 - distutils module: sysconfig.get_config_var('LIBPL') returns non existing directory

1854926 - CVE-2020-14422 python: DoS via inefficiency in IPv{4,6}Interface classes

1856481 - CVE-2019-20907 python: infinite loop in the tarfile module via crafted TAR archive

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