—–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA256

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

Synopsis: Important: ksh security update
Advisory ID: RHSA-2020:0568-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:0568
Issue date: 2020-02-24
CVE Names: CVE-2019-14868
=====================================================================

1. Summary:

An update for ksh is now available for Red Hat Enterprise Linux 7.

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 Client (v. 7) – x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) – x86_64
Red Hat Enterprise Linux Server (v. 7) – ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) – 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 Client (v. 7):

Source:
ksh-20120801-140.el7_7.src.rpm

x86_64:
ksh-20120801-140.el7_7.x86_64.rpm
ksh-debuginfo-20120801-140.el7_7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
ksh-20120801-140.el7_7.src.rpm

x86_64:
ksh-20120801-140.el7_7.x86_64.rpm
ksh-debuginfo-20120801-140.el7_7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
ksh-20120801-140.el7_7.src.rpm

ppc64:
ksh-20120801-140.el7_7.ppc64.rpm
ksh-debuginfo-20120801-140.el7_7.ppc64.rpm

ppc64le:
ksh-20120801-140.el7_7.ppc64le.rpm
ksh-debuginfo-20120801-140.el7_7.ppc64le.rpm

s390x:
ksh-20120801-140.el7_7.s390x.rpm
ksh-debuginfo-20120801-140.el7_7.s390x.rpm

x86_64:
ksh-20120801-140.el7_7.x86_64.rpm
ksh-debuginfo-20120801-140.el7_7.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
ksh-20120801-140.el7_7.src.rpm

x86_64:
ksh-20120801-140.el7_7.x86_64.rpm
ksh-debuginfo-20120801-140.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/

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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=nxo3
—–END PGP SIGNATURE—–

—
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce