Topic

An update for python is now available for Red Hat Enterprise Linux 7.

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.

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: Missing salt initialization in _elementtree.c module (CVE-2018-14647)
• python: NULL pointer dereference using a specially crafted X509 certificate (CVE-2019-5010)
• 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)

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 7.7 Release Notes linked from the References section.

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

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

• BZ - 1629982 - Python can sometimes create incorrect .pyc files
• BZ - 1631822 - CVE-2018-14647 python: Missing salt initialization in _elementtree.c module
• BZ - 1666519 - CVE-2019-5010 python: NULL pointer dereference using a specially crafted X509 certificate
• BZ - 1688169 - CVE-2019-9740 python: CRLF injection via the query part of the url passed to urlopen()
• BZ - 1695570 - CVE-2019-9948 python: Undocumented local_file protocol allows remote attackers to bypass protection mechanisms
• BZ - 1695572 - CVE-2019-9947 python: CRLF injection via the path part of the url passed to urlopen()
• BZ - 1703600 - python2-devel can't be installed during RHEL 7 to 8 upgrade due to incorrect Obsoletes

CVEs

• CVE-2018-14647
• CVE-2019-5010
• CVE-2019-9740
• CVE-2019-9947
• CVE-2019-9948

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.7_release_notes/index