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Red Hat: RHSA-2021-4160-03 Moderate: python39 Update and DoS Threats

red hat
Calendar Grey November 9, 2021
Dist Redhat Esm H88
An important patch has been released for python39 on Red Hat, tackling significant vulnerabilities related to information exposure and denial of service.
An update for the python39:3.9 and python39-devel:3.9 modules 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: Information disclosure via pydoc (CVE-2021-3426)
* python: urllib: Regular expression DoS in AbstractBasicAuthHandler (CVE-2021-3733)
* python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS (CVE-2021-28957)
* python-ipaddress: Improper input validation of octal strings (CVE-2021-29921)
* python-urllib3: ReDoS in the parsing of authority part of URL (CVE-2021-33503)
* python-pip: Incorrect handling of unicode separators in git references (CVE-2021-3572)
* python: urllib: HTTP client possible infinite loop on a 100 Continue response (CVE-2021-3737)
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 8.5 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory Red Hat moderate severity information disclosure XSS issue python module DOs threat

References

https://access.redhat.com/security/cve/CVE-2021-3426 https://access.redhat.com/security/cve/CVE-2021-3572 https://access.redhat.com/security/cve/CVE-2021-3733 https://access.redhat.com/security/cve/CVE-2021-3737 https://access.redhat.com/security/cve/CVE-2021-28957 https://access.redhat.com/security/cve/CVE-2021-29921 https://access.redhat.com/security/cve/CVE-2021-33503 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/8.5_release_notes/index

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: PyYAML-5.4.1-1.module+el8.5.0+10613+59a13ec4.src.rpm mod_wsgi-4.7.1-4.module+el8.4.0+9822+20bf1249.src.rpm numpy-1.19.4-3.module+el8.5.0+12204+54860423.src.rpm python-PyMySQL-0.10.1-2.module+el8.4.0+9822+20bf1249.src.rpm python-cffi-1.14.3-2.module+el8.4.0+9822+20bf1249.src.rpm python-chardet-3.0.4-19.module+el8.4.0+9822+20bf1249.src.rpm python-cryptography-3.3.1-2.module+el8.4.0+9822+20bf1249.src.rpm python-idna-2.10-3.module+el8.4.0+9822+20bf1249.src.rpm python-lxml-4.6.2-3.module+el8.5.0+10536+a233b742.src.rpm python-ply-3.11-10.module+el8.4.0+9822+20bf1249.src.rpm python-psutil-5.8.0-4.module+el8.4.0+9822+20bf1249.src.rpm python-psycopg2-2.8.6-2.module+el8.4.0+9822+20bf1249.src.rpm python-pycparser-2.20-3.module+el8.4.0+9822+20bf1249.src.rpm python-pysocks-1.7.1-4.module+el8.4.0+9822+20bf1249.src.rpm python-requests-2.25.0-2.module+el8.4.0+9822+20bf1249.src.rpm python-toml-0.10.1-5.module+el8.4.0+9822+20bf1249.src.rpm python-urllib3-1.25.10-4.module+el8.5.0+11712+ea2d2be1.src.rpm python-wheel-0.35.1-4.module+el8.5.0+12204+54860423.src.rpm python39-3.9.6-2.module+el8.5.0+12204+54860423.src.rpm python3x-pip-20.2.4-6.module+el8.5.0+12204+54860423.src.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:4160-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4160
Issue date: 2021-11-09

Topic

An update for the python39:3.9 and python39-devel:3.9 modules is nowavailable 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 Red Hat moderate severity information disclosure XSS issue python module DOs threat

Relevant Releases Architectures

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

Red Hat Enterprise Linux CRB (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1935913 - CVE-2021-3426 python: Information disclosure via pydoc

1941534 - CVE-2021-28957 python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS

1957458 - CVE-2021-29921 python-ipaddress: Improper input validation of octal strings

1962856 - CVE-2021-3572 python-pip: Incorrect handling of unicode separators in git references

1968074 - CVE-2021-33503 python-urllib3: ReDoS in the parsing of authority part of URL

1995162 - CVE-2021-3737 python: urllib: HTTP client possible infinite loop on a 100 Continue response

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

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