5 - RHSA-2019:1260

Problem Description:

An update for python27-python and python27-python-jinja2 is now available for Red Hat Software Collections.

Red Hat Product Security has rated this update as having a security impact of Important. 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 Software Collections for Red Hat Enterprise Linux Server (v. 6) - noarch, x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64le, s390x, x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) - noarch, ppc64le, s390x, x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) - noarch, ppc64le, s390x, x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) - noarch, ppc64le, s390x, x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) - noarch, x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) - noarch, 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.

The following packages have been upgraded to a later upstream version: python27-python (2.7.16). (BZ#1709349)

Security Fix(es):

* python-jinja2: Sandbox escape due to information disclosure via str.format (CVE-2016-10745)

* python: DOS via regular expression backtracking in difflib.IS_LINE_JUNK method in difflib (CVE-2018-1061)

* python: Missing salt initialization in _elementtree.c module (CVE-2018-14647)

* python: improper neutralization of CRLF sequences in urllib module (CVE-2019-9740)

* python: improper neutralization of CRLF sequences in urllib module (CVE-2019-9947)

* python: DOS via regular expression catastrophic backtracking in apop() method in pop3lib (CVE-2018-1060)

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.

Bug Fix(es):

* urlsplit doesn't accept a NFKD hostname with a port number (BZ#1709329)

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

For the update to take effect, all applications using Jinja2 must be restarted.

5. Bugs fixed (https://bugzilla.redhat.com/):

1549191 - CVE-2018-1060 python: DOS via regular expression catastrophic backtracking in apop() method in pop3lib 1549192 - CVE-2018-1061 python: DOS via regular expression backtracking in difflib.IS_LINE_JUNK method in difflib 1631822 - CVE-2018-14647 python: Missing salt initialization in _elementtree.c module 1688169 - CVE-2019-9740 python: improper neutralization of CRLF sequences in urllib module 1695572 - CVE-2019-9947 python: improper neutralization of CRLF sequences in urllib module 1698345 - CVE-2016-10745 python-jinja2: Sandbox escape due to information disclosure via str.format 1709349 - Update Python to 2.7.16 [rhscl-3.2.z]