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

Synopsis:          Important: zsh security update
Advisory ID:       RHSA-2020:0903-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2020:0903
Issue date:        2020-03-19
CVE Names:         CVE-2019-20044 
====================================================================
1. Summary:

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

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

3. Description:

The zsh shell is a command interpreter usable as an interactive login shell
and as a shell script command processor. Zsh resembles the ksh shell (the
Korn shell), but includes many enhancements. Zsh supports command-line
editing, built-in spelling correction, programmable command completion,
shell functions (with autoloading), a history mechanism, and more.

Security Fix(es):

* zsh: insecure dropping of privileges when unsetting PRIVILEGED option
(CVE-2019-20044)

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/):

1804859 - CVE-2019-20044 zsh: insecure dropping of privileges when unsetting PRIVILEGED option

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

noarch:
zsh-html-5.5.1-6.el8_1.2.noarch.rpm

Red Hat Enterprise Linux BaseOS (v. 8):

Source:
zsh-5.5.1-6.el8_1.2.src.rpm

aarch64:
zsh-5.5.1-6.el8_1.2.aarch64.rpm
zsh-debuginfo-5.5.1-6.el8_1.2.aarch64.rpm
zsh-debugsource-5.5.1-6.el8_1.2.aarch64.rpm

ppc64le:
zsh-5.5.1-6.el8_1.2.ppc64le.rpm
zsh-debuginfo-5.5.1-6.el8_1.2.ppc64le.rpm
zsh-debugsource-5.5.1-6.el8_1.2.ppc64le.rpm

s390x:
zsh-5.5.1-6.el8_1.2.s390x.rpm
zsh-debuginfo-5.5.1-6.el8_1.2.s390x.rpm
zsh-debugsource-5.5.1-6.el8_1.2.s390x.rpm

x86_64:
zsh-5.5.1-6.el8_1.2.x86_64.rpm
zsh-debuginfo-5.5.1-6.el8_1.2.x86_64.rpm
zsh-debugsource-5.5.1-6.el8_1.2.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-2019-20044
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2020 Red Hat, Inc.
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RedHat: RHSA-2020-0903:01 Important: zsh security update

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

Summary

The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more.
Security Fix(es):
* zsh: insecure dropping of privileges when unsetting PRIVILEGED option (CVE-2019-20044)
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.



Summary


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

References

https://access.redhat.com/security/cve/CVE-2019-20044 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux AppStream (v. 8):
noarch: zsh-html-5.5.1-6.el8_1.2.noarch.rpm
Red Hat Enterprise Linux BaseOS (v. 8):
Source: zsh-5.5.1-6.el8_1.2.src.rpm
aarch64: zsh-5.5.1-6.el8_1.2.aarch64.rpm zsh-debuginfo-5.5.1-6.el8_1.2.aarch64.rpm zsh-debugsource-5.5.1-6.el8_1.2.aarch64.rpm
ppc64le: zsh-5.5.1-6.el8_1.2.ppc64le.rpm zsh-debuginfo-5.5.1-6.el8_1.2.ppc64le.rpm zsh-debugsource-5.5.1-6.el8_1.2.ppc64le.rpm
s390x: zsh-5.5.1-6.el8_1.2.s390x.rpm zsh-debuginfo-5.5.1-6.el8_1.2.s390x.rpm zsh-debugsource-5.5.1-6.el8_1.2.s390x.rpm
x86_64: zsh-5.5.1-6.el8_1.2.x86_64.rpm zsh-debuginfo-5.5.1-6.el8_1.2.x86_64.rpm zsh-debugsource-5.5.1-6.el8_1.2.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-2020:0903-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0903
Issued Date: : 2020-03-19
CVE Names: CVE-2019-20044

Topic

An update for zsh is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.


Topic


 

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - noarch

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


Bugs Fixed

1804859 - CVE-2019-20044 zsh: insecure dropping of privileges when unsetting PRIVILEGED option


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