Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.0426
ksh security update
6 February 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: ksh
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 8
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-14868
Original Bulletin:
https://access.redhat.com/errata/RHSA-2020:0431
Comment: This advisory references vulnerabilities in the Linux kernel that
also affect distributions other than Red Hat. It is recommended that
administrators running Linux check for an updated version of the
kernel for their system.
- --------------------------BEGIN INCLUDED TEXT--------------------
1. Summary:
An update for ksh is now available for Red Hat Enterprise Linux 8.0 Update
Services for SAP Solutions.
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 E4S (v. 8.0) - aarch64, ppc64le, s390x, x86_64
3. Description:
KornShell (ksh) is a Unix shell developed by AT&T Bell Laboratories, which
is backward-compatible with the Bourne shell (sh) and includes many
features of the C shell. The most recent version is KSH-93. KornShell
complies with the POSIX.2 standard (IEEE Std 1003.2-1992).
Security Fix(es):
* ksh: certain environment variables interpreted as arithmetic expressions
on startup, leading to code injection (CVE-2019-14868)
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/):
1757324 - CVE-2019-14868 ksh: certain environment variables interpreted as arithmetic expressions on startup, leading to code injection
6. Package List:
Red Hat Enterprise Linux AppStream E4S (v. 8.0):
Source:
ksh-20120801-253.el8_0.src.rpm
aarch64:
ksh-20120801-253.el8_0.aarch64.rpm
ksh-debuginfo-20120801-253.el8_0.aarch64.rpm
ksh-debugsource-20120801-253.el8_0.aarch64.rpm
ppc64le:
ksh-20120801-253.el8_0.ppc64le.rpm
ksh-debuginfo-20120801-253.el8_0.ppc64le.rpm
ksh-debugsource-20120801-253.el8_0.ppc64le.rpm
s390x:
ksh-20120801-253.el8_0.s390x.rpm
ksh-debuginfo-20120801-253.el8_0.s390x.rpm
ksh-debugsource-20120801-253.el8_0.s390x.rpm
x86_64:
ksh-20120801-253.el8_0.x86_64.rpm
ksh-debuginfo-20120801-253.el8_0.x86_64.rpm
ksh-debugsource-20120801-253.el8_0.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-2019-14868
https://access.redhat.com/security/updates/classification/#important
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.
- -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=T2ua
- -----END PGP SIGNATURE-----
- --
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=G8sC
-----END PGP SIGNATURE-----