Affected: AlmaLinux:8: python38-Cython, AlmaLinux:8: python38-asn1crypto, AlmaLinux:8: python38-cffi, AlmaLinux:8: python38-chardet, AlmaLinux:8: python38-cryptography, AlmaLinux:8: python38-idna, AlmaLinux:8: python38-markupsafe, AlmaLinux:8: python38-mod_wsgi, AlmaLinux:8: python38-psycopg2, AlmaLinux:8: python38-psycopg2-doc and 6 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.

The following packages have been upgraded to a later upstream version: python38 (3.8.3). (BZ#1847416)

Security Fix(es):

* PyYAML: command execution through python/object/apply constructor in FullLoader (CVE-2019-20477)

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

* PyYAML: arbitrary command execution through python/object/new when FullLoader is used (CVE-2020-1747)

* 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 AlmaLinux Release Notes linked from the References section.

Withdrawn by the publisher.

Affected: Bitnami: libpython

Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.

Withdrawn by the publisher.

Affected: CleanStart: python3

Multiple security vulnerabilities affect the python3 package. These issues are resolved in later releases. See references for individual vulnerability details.

Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.

Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.

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…

Security update for python3

python: XSS vulnerability in the documentation XML-RPC server in server_title field python: CRLF injection via the host part of the url passed to urlopen() python: infinite loop in the tarfile module via crafted TAR archive python-pip: directory traversal in _download_http_url() function in src/pip/_internal/download.py python: wrong backtracking in urllib.request.AbstractBasicAuthHandler allows for a ReDoS python: DoS via inefficiency in IPv{4,6}Interface classes python: CRLF injection via HTTP request method in httplib/http.client

Security update for python3

Affected: Ubuntu:Pro:14.04:LTS: python2.7, Ubuntu:Pro:14.04:LTS: python3.4, Ubuntu:Pro:14.04:LTS: python3.5, Ubuntu:16.04:LTS: python2.7, Ubuntu:16.04:LTS: python3.5, Ubuntu:18.04:LTS: python2.7, Ubuntu:18.04:LTS: python3.6, Ubuntu:18.04:LTS: python3.7, Ubuntu:18.04:LTS: python3.8, Ubuntu:20.04:LTS: python2.7 and 1 more

Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Python ausnutzen, um einen Denial of Service Angriff durchzuführen.