RedHat: RHSA-2019-4360:01 Important: libyang security update

    Date 22 Dec 2019
    1069
    Posted By LinuxSecurity Advisories
    An update for libyang 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: libyang security update
    Advisory ID:       RHSA-2019:4360-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2019:4360
    Issue date:        2019-12-23
    CVE Names:         CVE-2019-19333 CVE-2019-19334 
    =====================================================================
    
    1. Summary:
    
    An update for libyang 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:
    
    The libyang package provides a library for YANG data modeling language.
    libyang is a YANG data modelling language parser and toolkit written (and
    providing API) in C. The library is used e.g. in libnetconf2, Netopeer2,
    sysrepo and FRRouting projects.
    
    Security Fix(es):
    
    * libyang: stack-based buffer overflow in make_canonical when bits leaf
    type is used (CVE-2019-19333)
    
    * libyang: stack-based buffer overflow in make_canonical when identityref
    leaf type is used (CVE-2019-19334)
    
    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.
    
    IMPORTANT:
    
    The libyang-devel sub-package has recently been removed from the AppStream
    repository. If you have previously installed libyang-devel, remove it prior
    to applying this advisory to make the update successful.
    
    4. Solution:
    
    If you have previously installed libyang-devel, remove it prior to applying
    this advisory to make the update successful.
    
    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/):
    
    1779573 - CVE-2019-19333 libyang: stack-based buffer overflow in make_canonical when bits leaf type is used
    1779576 - CVE-2019-19334 libyang: stack-based buffer overflow in make_canonical when identityref leaf type is used
    
    6. Package List:
    
    Red Hat Enterprise Linux AppStream (v. 8):
    
    Source:
    libyang-0.16.105-3.el8_1.2.src.rpm
    
    aarch64:
    libyang-0.16.105-3.el8_1.2.aarch64.rpm
    libyang-cpp-debuginfo-0.16.105-3.el8_1.2.aarch64.rpm
    libyang-debuginfo-0.16.105-3.el8_1.2.aarch64.rpm
    libyang-debugsource-0.16.105-3.el8_1.2.aarch64.rpm
    python3-libyang-debuginfo-0.16.105-3.el8_1.2.aarch64.rpm
    
    ppc64le:
    libyang-0.16.105-3.el8_1.2.ppc64le.rpm
    libyang-cpp-debuginfo-0.16.105-3.el8_1.2.ppc64le.rpm
    libyang-debuginfo-0.16.105-3.el8_1.2.ppc64le.rpm
    libyang-debugsource-0.16.105-3.el8_1.2.ppc64le.rpm
    python3-libyang-debuginfo-0.16.105-3.el8_1.2.ppc64le.rpm
    
    s390x:
    libyang-0.16.105-3.el8_1.2.s390x.rpm
    libyang-cpp-debuginfo-0.16.105-3.el8_1.2.s390x.rpm
    libyang-debuginfo-0.16.105-3.el8_1.2.s390x.rpm
    libyang-debugsource-0.16.105-3.el8_1.2.s390x.rpm
    python3-libyang-debuginfo-0.16.105-3.el8_1.2.s390x.rpm
    
    x86_64:
    libyang-0.16.105-3.el8_1.2.i686.rpm
    libyang-0.16.105-3.el8_1.2.x86_64.rpm
    libyang-cpp-debuginfo-0.16.105-3.el8_1.2.i686.rpm
    libyang-cpp-debuginfo-0.16.105-3.el8_1.2.x86_64.rpm
    libyang-debuginfo-0.16.105-3.el8_1.2.i686.rpm
    libyang-debuginfo-0.16.105-3.el8_1.2.x86_64.rpm
    libyang-debugsource-0.16.105-3.el8_1.2.i686.rpm
    libyang-debugsource-0.16.105-3.el8_1.2.x86_64.rpm
    python3-libyang-debuginfo-0.16.105-3.el8_1.2.i686.rpm
    python3-libyang-debuginfo-0.16.105-3.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-2019-19333
    https://access.redhat.com/security/cve/CVE-2019-19334
    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 2019 Red Hat, Inc.
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