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RedHat: RHSA-2020-3592-01 Moderate Security Update for Bash

red hat
Calendar Grey September 1, 2020
Dist Redhat Esm H88
A crucial security patch for Red Hat Enterprise Linux 7.7 addresses vulnerabilities in the bash shell, enhancing overall system protection and stability.
An update for bash is now available for Red Hat Enterprise Linux 7.7 Extended Update Support

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

Summary

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.

Topics%20covered

Topics Covered

security advisory moderate security update remote code execution access control Red Hat Enterprise Linux bash

References

https://access.redhat.com/security/cve/CVE-2019-9924 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux ComputeNode EUS (v. 7.7):
Source: bash-4.2.46-34.el7_7.src.rpm
x86_64: bash-4.2.46-34.el7_7.x86_64.rpm bash-debuginfo-4.2.46-34.el7_7.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7):
x86_64: bash-debuginfo-4.2.46-34.el7_7.x86_64.rpm bash-doc-4.2.46-34.el7_7.x86_64.rpm
Red Hat Enterprise Linux Server EUS (v. 7.7):
Source: bash-4.2.46-34.el7_7.src.rpm
ppc64: bash-4.2.46-34.el7_7.ppc64.rpm bash-debuginfo-4.2.46-34.el7_7.ppc64.rpm
ppc64le: bash-4.2.46-34.el7_7.ppc64le.rpm bash-debuginfo-4.2.46-34.el7_7.ppc64le.rpm
s390x: bash-4.2.46-34.el7_7.s390x.rpm bash-debuginfo-4.2.46-34.el7_7.s390x.rpm
x86_64: bash-4.2.46-34.el7_7.x86_64.rpm bash-debuginfo-4.2.46-34.el7_7.x86_64.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 7.7):
ppc64: bash-debuginfo-4.2.46-34.el7_7.ppc64.rpm bash-doc-4.2.46-34.el7_7.ppc64.rpm
ppc64le: bash-debuginfo-4.2.46-34.el7_7.ppc64le.rpm bash-doc-4.2.46-34.el7_7.ppc64le.rpm
s390x: bash-debuginfo-4.2.46-34.el7_7.s390x.rpm bash-doc-4.2.46-34.el7_7.s390x.rpm
x86_64: bash-debuginfo-4.2.46-34.el7_7.x86_64.rpm bash-doc-4.2.46-34.el7_7.x86_64.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


Advisory ID: RHSA-2020:3592-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:3592
Issue date: 2020-09-01

Topic

An update for bash is now available for Red Hat Enterprise Linux 7.7Extended Update Support.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate security update remote code execution access control Red Hat Enterprise Linux bash

Relevant Releases Architectures

Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) - x86_64

Red Hat Enterprise Linux Server EUS (v. 7.7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional EUS (v. 7.7) - ppc64, ppc64le, s390x, x86_64

Bugs Fixed

1691774 - CVE-2019-9924 bash: BASH_CMD is writable in restricted bash shells

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