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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.1772 ksh security update 20 May 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: ksh Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 7 Red Hat Enterprise Linux WS/Desktop 7 Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-14868 Reference: ESB-2020.1223 Original Bulletin: https://access.redhat.com/errata/RHSA-2020:2210 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: ksh security update Advisory ID: RHSA-2020:2210-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:2210 Issue date: 2020-05-19 CVE Names: CVE-2019-14868 ===================================================================== 1. Summary: An update for ksh is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 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 Server AUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server E4S (v. 7.4) - ppc64le, x86_64 Red Hat Enterprise Linux Server TUS (v. 7.4) - 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 Server AUS (v. 7.4): Source: ksh-20120801-36.el7_4.src.rpm x86_64: ksh-20120801-36.el7_4.x86_64.rpm ksh-debuginfo-20120801-36.el7_4.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.4): Source: ksh-20120801-36.el7_4.src.rpm ppc64le: ksh-20120801-36.el7_4.ppc64le.rpm ksh-debuginfo-20120801-36.el7_4.ppc64le.rpm x86_64: ksh-20120801-36.el7_4.x86_64.rpm ksh-debuginfo-20120801-36.el7_4.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.4): Source: ksh-20120801-36.el7_4.src.rpm x86_64: ksh-20120801-36.el7_4.x86_64.rpm ksh-debuginfo-20120801-36.el7_4.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 iQIVAwUBXsPwSdzjgjWX9erEAQiB7A//QnnbB99cRNfKLNGJHhZPAm/j25TqEr7A ef/cTPqYtMhxQqq/K+WjtL1wgkKGGAbwQz6R9OPXl/Ki1PQ9GZiC9ak9Bo83Mg8y rld6b5UDmtKQEsDrvbuf4EsuIpYM8HSa2vqOkXeUILM3Mi6NbCEmm9XFR4Kwi5A7 TrQ0yLzz7tJDv55b+ZDbHgcQVzSDatenJQV6y26wh71ILo/a//yDiOBc5QaUNqum EkjBfuCeeOFrPIrWRE2SLFTPj4tvI0xJSQmwlRsFztUxZte1be+aSlN5Mv4t7lsS EwgpNj8IbbxY84QHNm85OmdSRL6Tt01iRCHmh25uKxCy56kIENKIzCBZ5LpCerFL GQDMbdD5vsIwcxy15zSM+9LT7b6LBMIHi7lJpLOX8H71djBmlHltk1ejRgmIRe1E bPL5SU4XNTsoiQ4QUECNMMuvU6wWS0+4spWVVDCK148Kc4GZFuQhXdJ0M4VES/Bg 8GP7w4cIrKf+PU0Eb1MHT4t2C42HlU/tnfAGZR/KrgISHkNyd4UVTj6Xs5lGJwpy nT5BWyZeCO2P/d2o97h8WqjLKVxHRWmifv+BjXhndLmmawlHxs5BboZcpyn8ONcK HsfKyKjAaMrTcvRt4/p6zRRbr85TsqGyMFzw1oufF7dKi9apRfRXGv/xsmL1GnCG mnnvTau9gq8= =I5Mf - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXsRveeNLKJtyKPYoAQg3ThAAkByIHFH5CtW23A8i9EHCZccWFN6DmSrf DgmJEJX9zbutlOWd7tPbvowjV0grbwaIxGGBaIao0kbFXfR8mdMyTBiOqMK1ERUY 2uWlOJk0ns38QTu/gWx3w6tOHIGOyIQcY+Iturd6eyx7BWhIWEWf5GsWXFhK8RBz rmf/vDLwXOv9YiJUVds8aUMW/ckGmvdVlrd7JNCZ8qeO1eypSWroSubF3XZ5GaY2 9xHg8IuMPPlZn6psQnbyQZkMFpe13P3tKMaKMhrAga/B8Fdu/ReT1RWNrdy8l2CC QSs4bvayOI7k/3/DZM+sNWgKChX7NXEsPHOW8DqgTFdTFZ2mWAeFxqYcdlkLPVhs hyLMJ6nWHNC+cfwQAL4GMBbZbDY2A3ec1+esge7QOpC7OCSXPluVFACB4mNYH2n3 9cfqHbbue3pxYqG/3U/K1FaojGHTGYJmIpIPxU28ol1XKXUzIOIHFvZgZgYnmg1L sFhQ0mbBtoRNnkT99YTfIJRfJp0WELbWIO40oeGJJ4iCT52fH7by1kfQ79tBqwbd oPFbE1qioZAJoyjH0ZDO6Gh52TfXxi5ivnUMfduHJAdtDjnkSUh/INGPW5ond1ID C2oG+meLeYkigqh8Mr7t02/qVOvly6K16osNio6lfEzWt1P5IZbQoT3p77ZmuA7m o56N2Oqiv10= =YXfp -----END PGP SIGNATURE-----