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Red Hat Security Advisory
Synopsis: Moderate: bash security update
Advisory ID: RHSA-2020:3474-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3474
Issue date: 2020-08-18
CVE Names: CVE-2019-9924
=====================================================================
1. Summary:
An update for bash is now available for Red Hat Enterprise Linux 7.6
Extended Update Support.
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 ComputeNode EUS (v. 7.6) - x86_64
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) - x86_64
Red Hat Enterprise Linux Server EUS (v. 7.6) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional EUS (v. 7.6) - ppc64, ppc64le, s390x,
x86_64
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) -
aarch64, ppc64le, s390x
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v.
7) - aarch64, ppc64le, s390x
3. Description:
The bash packages provide Bash (Bourne-again shell), which is the default
shell for Red Hat Enterprise Linux.
Security Fix(es):
* bash: BASH_CMD is writable in restricted bash shells (CVE-2019-9924)
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/):
1691774 - CVE-2019-9924 bash: BASH_CMD is writable in restricted bash shells
6. Package List:
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6):
Source:
bash-4.2.46-32.el7_6.src.rpm
x86_64:
bash-4.2.46-32.el7_6.x86_64.rpm
bash-debuginfo-4.2.46-32.el7_6.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6):
x86_64:
bash-debuginfo-4.2.46-32.el7_6.x86_64.rpm
bash-doc-4.2.46-32.el7_6.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 7.6):
Source:
bash-4.2.46-32.el7_6.src.rpm
ppc64:
bash-4.2.46-32.el7_6.ppc64.rpm
bash-debuginfo-4.2.46-32.el7_6.ppc64.rpm
ppc64le:
bash-4.2.46-32.el7_6.ppc64le.rpm
bash-debuginfo-4.2.46-32.el7_6.ppc64le.rpm
s390x:
bash-4.2.46-32.el7_6.s390x.rpm
bash-debuginfo-4.2.46-32.el7_6.s390x.rpm
x86_64:
bash-4.2.46-32.el7_6.x86_64.rpm
bash-debuginfo-4.2.46-32.el7_6.x86_64.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):
Source:
bash-4.2.46-32.el7_6.src.rpm
aarch64:
bash-4.2.46-32.el7_6.aarch64.rpm
bash-debuginfo-4.2.46-32.el7_6.aarch64.rpm
ppc64le:
bash-4.2.46-32.el7_6.ppc64le.rpm
bash-debuginfo-4.2.46-32.el7_6.ppc64le.rpm
s390x:
bash-4.2.46-32.el7_6.s390x.rpm
bash-debuginfo-4.2.46-32.el7_6.s390x.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 7.6):
ppc64:
bash-debuginfo-4.2.46-32.el7_6.ppc64.rpm
bash-doc-4.2.46-32.el7_6.ppc64.rpm
ppc64le:
bash-debuginfo-4.2.46-32.el7_6.ppc64le.rpm
bash-doc-4.2.46-32.el7_6.ppc64le.rpm
s390x:
bash-debuginfo-4.2.46-32.el7_6.s390x.rpm
bash-doc-4.2.46-32.el7_6.s390x.rpm
x86_64:
bash-debuginfo-4.2.46-32.el7_6.x86_64.rpm
bash-doc-4.2.46-32.el7_6.x86_64.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v.
7):
aarch64:
bash-debuginfo-4.2.46-32.el7_6.aarch64.rpm
bash-doc-4.2.46-32.el7_6.aarch64.rpm
ppc64le:
bash-debuginfo-4.2.46-32.el7_6.ppc64le.rpm
bash-doc-4.2.46-32.el7_6.ppc64le.rpm
s390x:
bash-debuginfo-4.2.46-32.el7_6.s390x.rpm
bash-doc-4.2.46-32.el7_6.s390x.rpm
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-2019-9924
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/
Copyright 2020 Red Hat, Inc.
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