Sigurnosni nedostaci programskog paketa python

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by - 8. travnja 2020.0

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Red Hat Security Advisory

Synopsis: Moderate: python security update
Advisory ID: RHSA-2020:1346-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1346
Issue date: 2020-04-07
CVE Names: CVE-2018-1060 CVE-2018-1061 CVE-2018-14647
CVE-2019-9740 CVE-2019-9947 CVE-2019-9948
=====================================================================

1. Summary:

An update for python is now available for Red Hat Enterprise Linux 7.4
Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update
Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP
Solutions.

Red Hat Product Security has rated this update as having a security impact
of Moderate. 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 Enterprise Linux Server AUS (v. 7.4) – x86_64
Red Hat Enterprise Linux Server E4S (v. 7.4) – ppc64le, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 7.4) – x86_64
Red Hat Enterprise Linux Server Optional E4S (v. 7.4) – ppc64le, x86_64
Red Hat Enterprise Linux Server Optional TUS (v. 7.4) – x86_64
Red Hat Enterprise Linux Server TUS (v. 7.4) – 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.

Security Fix(es):

* 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: CRLF injection via the query part of the url passed to urlopen()
(CVE-2019-9740)

* python: CRLF injection via the path part of the url passed to urlopen()
(CVE-2019-9947)

* python: Undocumented local_file protocol allows remote attackers to
bypass protection mechanisms (CVE-2019-9948)

* 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.

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

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: CRLF injection via the query part of the url passed to urlopen()
1695570 – CVE-2019-9948 python: Undocumented local_file protocol allows remote attackers to bypass protection mechanisms
1695572 – CVE-2019-9947 python: CRLF injection via the path part of the url passed to urlopen()

6. Package List:

Red Hat Enterprise Linux Server AUS (v. 7.4):

Source:
python-2.7.5-63.el7_4.src.rpm

x86_64:
python-2.7.5-63.el7_4.x86_64.rpm
python-debuginfo-2.7.5-63.el7_4.i686.rpm
python-debuginfo-2.7.5-63.el7_4.x86_64.rpm
python-devel-2.7.5-63.el7_4.x86_64.rpm
python-libs-2.7.5-63.el7_4.i686.rpm
python-libs-2.7.5-63.el7_4.x86_64.rpm

Red Hat Enterprise Linux Server E4S (v. 7.4):

Source:
python-2.7.5-63.el7_4.src.rpm

ppc64le:
python-2.7.5-63.el7_4.ppc64le.rpm
python-debuginfo-2.7.5-63.el7_4.ppc64le.rpm
python-devel-2.7.5-63.el7_4.ppc64le.rpm
python-libs-2.7.5-63.el7_4.ppc64le.rpm

Red Hat Enterprise Linux Server TUS (v. 7.4):

Source:
python-2.7.5-63.el7_4.src.rpm

Red Hat Enterprise Linux Server Optional AUS (v. 7.4):

x86_64:
python-debug-2.7.5-63.el7_4.x86_64.rpm
python-debuginfo-2.7.5-63.el7_4.x86_64.rpm
python-test-2.7.5-63.el7_4.x86_64.rpm
python-tools-2.7.5-63.el7_4.x86_64.rpm
tkinter-2.7.5-63.el7_4.x86_64.rpm

Red Hat Enterprise Linux Server Optional E4S (v. 7.4):

ppc64le:
python-debug-2.7.5-63.el7_4.ppc64le.rpm
python-debuginfo-2.7.5-63.el7_4.ppc64le.rpm
python-test-2.7.5-63.el7_4.ppc64le.rpm
python-tools-2.7.5-63.el7_4.ppc64le.rpm
tkinter-2.7.5-63.el7_4.ppc64le.rpm

Red Hat Enterprise Linux Server Optional TUS (v. 7.4):

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2018-1060
https://access.redhat.com/security/cve/CVE-2018-1061
https://access.redhat.com/security/cve/CVE-2018-14647
https://access.redhat.com/security/cve/CVE-2019-9740
https://access.redhat.com/security/cve/CVE-2019-9947
https://access.redhat.com/security/cve/CVE-2019-9948
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

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