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ALSA-2021:4160 — Moderate: python39:3.9 and python39-devel:3.9 security update

Affected: AlmaLinux:8: python39-Cython, AlmaLinux:8: python39-PyMySQL, AlmaLinux:8: python39-attrs, AlmaLinux:8: python39-cffi, AlmaLinux:8: python39-chardet, AlmaLinux:8: python39-cryptography, AlmaLinux:8: python39-idna, AlmaLinux:8: python39-iniconfig, AlmaLinux:8: python39-mod_wsgi, AlmaLinux:8: python39-more-itertools and 26 more

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 AlmaLinux Release Notes linked from the References section.

bdu:2022-05830

Withdrawn: BELL-CVE-2021-3737 — CVE-2021-3737 does not affect BellSoft software

Withdrawn by the publisher.

BIT-libpython-2021-3737

Affected: Bitnami: libpython

A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.

certfr-2022-avi-097 — De multiples vulnérabilités ont été découvertes dans IBM Spectrum Protect Plus. Certaines d'entre elles permettent à un…

certfr-2022-avi-097

EUVD-2026-263938

fkie_cve-2021-3737

GHSA-hr7v-m862-8hh8

gsd-2021-3737

ICSA-23-348-10 — Siemens SIMATIC S7-1500

expat 2.1.0 and earlier does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE. shadow: TOCTOU (time-of-check time-of-use) race condition when copying and removing directory trees run-mailcap in the Debian mime-support package before 3.52-1+deb7u1 allows context-dependent attackers to execute arbitrary commands via shell metacharacters in a filename. In Python (aka CPython) up to 3.10.8, the mailcap module does not add escape characters into commands discovered in the system mailcap file. This may allow attackers to inject shell commands into applications that call mailcap.findmatch with untrusted input (if they lack validation of user-provided filenames or arguments). The fix is also back-ported to 3.7, 3.8, 3.9 Use-after-free vulnerability in bzip2recover in bzip2 1.0.6 allows remote attackers to cause a denial of service (crash) via a crafted bzip2 file, related to block ends set to before the start o…

msrc_CVE-2021-3737 — A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote at…

msrc_CVE-2021-3737

OESA-2021-1401 — python3 security update

Affected: openEuler:20.03-LTS-SP1: python3, openEuler:20.03-LTS-SP2: python3

Python combines remarkable power with very clear syntax. It has modules, classes, exceptions, very high level dynamic data types, and dynamic typing. There are interfaces to many system calls and libraries, as well as to various windowing systems. New built-in modules are easily written in C or C++ (or other languages, depending on the chosen implementation). Python is also usable as an extension language for applications written in other languages that need easy-to-use scripting or automation interfaces. Security Fix(es): A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.(CVE-2021-3737)

There s a flaw in urllib s AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.(CVE-2021-3733)

openSUSE-SU-2021:1418-1 — Security update for python

Security update for python

RHSA-2021:4160 — Red Hat Security Advisory: python39:3.9 and python39-devel:3.9 security update

python: Information disclosure via pydoc python-pip: Incorrect handling of unicode separators in git references python: urllib: Regular expression DoS in AbstractBasicAuthHandler python: urllib: HTTP client possible infinite loop on a 100 Continue response python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS python-ipaddress: Improper input validation of octal strings python-urllib3: ReDoS in the parsing of authority part of URL

SUSE-SU-2021:3477-1 — Security update for python3

Security update for python3

UBUNTU-CVE-2021-3737

Affected: Ubuntu:Pro:14.04:LTS: python3.4, Ubuntu:Pro:14.04:LTS: python3.5, Ubuntu:Pro:16.04:LTS: python3.5, Ubuntu:18.04:LTS: python3.6, Ubuntu:18.04:LTS: python3.7, Ubuntu:18.04:LTS: python3.8, Ubuntu:20.04:LTS: python3.8, Ubuntu:20.04:LTS: python3.9

WID-SEC-W-2022-0011 — Python: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Python ausnutzen, um einen Denial of Service Angriff durchzuführen und um Informationen offenzulegen.