Moderate: python3 security and bug fix update

Synopsis

Moderate: python3 security and bug fix update

Type/Severity

Security Advisory: Moderate

Topic

An update for python3 is now available for Red Hat Enterprise Linux 8.

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: Cookie domain check returns incorrect results (CVE-2018-20852)
  
• python: email.utils.parseaddr wrongly parses email addresses (CVE-2019-16056)
  

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 8.2 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 for x86_64 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64

Fixes

• BZ - 1712977 - test_gdb: test_gc() fails on s390x with: Unable to locate python frame
• BZ - 1714733 - test_gdb failures on ppc64le
• BZ - 1740347 - CVE-2018-20852 python: Cookie domain check returns incorrect results
• BZ - 1749576 - [Amazon RHEL8.2 FEAT] Python3 - Enable "Expensive" Optimizations
• BZ - 1749839 - CVE-2019-16056 python: email.utils.parseaddr wrongly parses email addresses
• BZ - 1756217 - Lower footprint of platform-python
• BZ - 1761599 - FAIL_RETURN_IN_FIPS_MODE() patch breaks mod_wsgi: ValueError: unsupported hash type blake2b
• BZ - 1774471 - Python os.urandom() is not FIPS compliant

CVEs

• CVE-2018-20852
• CVE-2019-16056

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.2_release_notes/index