RedHat: RHSA-2021-1679:01 Low: bash security and bug fix update | L...

Advisories

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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Low: bash security and bug fix update
Advisory ID:       RHSA-2021:1679-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2021:1679
Issue date:        2021-05-18
CVE Names:         CVE-2019-18276 
=====================================================================

1. Summary:

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

Red Hat Product Security has rated this update as having a security impact
of Low. 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 BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

3. Description:

The bash packages provide Bash (Bourne-again shell), which is the default
shell for Red Hat Enterprise Linux.

Security Fix(es):

* bash: when effective UID is not equal to its real UID the saved UID is
not dropped (CVE-2019-18276)

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 8.4 Release Notes linked from 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/):

1778309 - CVE-2019-18276 bash: when effective UID is not equal to its real UID the saved UID is not dropped
1890888 - Took long time to return when bash -c 'exit 2 & wait $!' run in the big size LimitNPROC values

6. Package List:

Red Hat Enterprise Linux BaseOS (v. 8):

Source:
bash-4.4.19-14.el8.src.rpm

aarch64:
bash-4.4.19-14.el8.aarch64.rpm
bash-debuginfo-4.4.19-14.el8.aarch64.rpm
bash-debugsource-4.4.19-14.el8.aarch64.rpm
bash-doc-4.4.19-14.el8.aarch64.rpm

ppc64le:
bash-4.4.19-14.el8.ppc64le.rpm
bash-debuginfo-4.4.19-14.el8.ppc64le.rpm
bash-debugsource-4.4.19-14.el8.ppc64le.rpm
bash-doc-4.4.19-14.el8.ppc64le.rpm

s390x:
bash-4.4.19-14.el8.s390x.rpm
bash-debuginfo-4.4.19-14.el8.s390x.rpm
bash-debugsource-4.4.19-14.el8.s390x.rpm
bash-doc-4.4.19-14.el8.s390x.rpm

x86_64:
bash-4.4.19-14.el8.x86_64.rpm
bash-debuginfo-4.4.19-14.el8.x86_64.rpm
bash-debugsource-4.4.19-14.el8.x86_64.rpm
bash-doc-4.4.19-14.el8.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/

7. References:

https://access.redhat.com/security/cve/CVE-2019-18276
https://access.redhat.com/security/updates/classification/#low
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/

8. Contact:

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

Copyright 2021 Red Hat, Inc.
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RedHat: RHSA-2021-1679:01 Low: bash security and bug fix update

An update for bash is now available for Red Hat Enterprise Linux 8

Summary

The bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux.
Security Fix(es):
* bash: when effective UID is not equal to its real UID the saved UID is not dropped (CVE-2019-18276)
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 8.4 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changesdescribed in this advisory, refer to:https://access.redhat.com/articles/11258

References

https://access.redhat.com/security/cve/CVE-2019-18276 https://access.redhat.com/security/updates/classification/#low https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/

Package List

Red Hat Enterprise Linux BaseOS (v. 8):
Source: bash-4.4.19-14.el8.src.rpm
aarch64: bash-4.4.19-14.el8.aarch64.rpm bash-debuginfo-4.4.19-14.el8.aarch64.rpm bash-debugsource-4.4.19-14.el8.aarch64.rpm bash-doc-4.4.19-14.el8.aarch64.rpm
ppc64le: bash-4.4.19-14.el8.ppc64le.rpm bash-debuginfo-4.4.19-14.el8.ppc64le.rpm bash-debugsource-4.4.19-14.el8.ppc64le.rpm bash-doc-4.4.19-14.el8.ppc64le.rpm
s390x: bash-4.4.19-14.el8.s390x.rpm bash-debuginfo-4.4.19-14.el8.s390x.rpm bash-debugsource-4.4.19-14.el8.s390x.rpm bash-doc-4.4.19-14.el8.s390x.rpm
x86_64: bash-4.4.19-14.el8.x86_64.rpm bash-debuginfo-4.4.19-14.el8.x86_64.rpm bash-debugsource-4.4.19-14.el8.x86_64.rpm bash-doc-4.4.19-14.el8.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/

Severity
Advisory ID: RHSA-2021:1679-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1679
Issued Date: : 2021-05-18
CVE Names: CVE-2019-18276

Topic

An update for bash is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Low. 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.

Relevant Releases Architectures

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

1778309 - CVE-2019-18276 bash: when effective UID is not equal to its real UID the saved UID is not dropped

1890888 - Took long time to return when bash -c 'exit 2 & wait $!' run in the big size LimitNPROC values

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