RedHat: RHSA-2020-0559:01 Important: ksh security update

    Date 20 Feb 2020
    930
    Posted By LinuxSecurity Advisories
    An update for ksh 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
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    =====================================================================
                       Red Hat Security Advisory
    
    Synopsis:          Important: ksh security update
    Advisory ID:       RHSA-2020:0559-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2020:0559
    Issue date:        2020-02-20
    CVE Names:         CVE-2019-14868 
    =====================================================================
    
    1. Summary:
    
    An update for ksh 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) - 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 (v. 8):
    
    Source:
    ksh-20120801-253.el8_1.src.rpm
    
    aarch64:
    ksh-20120801-253.el8_1.aarch64.rpm
    ksh-debuginfo-20120801-253.el8_1.aarch64.rpm
    ksh-debugsource-20120801-253.el8_1.aarch64.rpm
    
    ppc64le:
    ksh-20120801-253.el8_1.ppc64le.rpm
    ksh-debuginfo-20120801-253.el8_1.ppc64le.rpm
    ksh-debugsource-20120801-253.el8_1.ppc64le.rpm
    
    s390x:
    ksh-20120801-253.el8_1.s390x.rpm
    ksh-debuginfo-20120801-253.el8_1.s390x.rpm
    ksh-debugsource-20120801-253.el8_1.s390x.rpm
    
    x86_64:
    ksh-20120801-253.el8_1.x86_64.rpm
    ksh-debuginfo-20120801-253.el8_1.x86_64.rpm
    ksh-debugsource-20120801-253.el8_1.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 . More contact
    details at https://access.redhat.com/security/team/contact/
    
    Copyright 2020 Red Hat, Inc.
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