RedHat: RHSA-2019-1791:01 Important: libssh2 security update

    Date16 Jul 2019
    CategoryRed Hat
    2664
    Posted ByLinuxSecurity Advisories
    An update for libssh2 is now available for Red Hat Enterprise Linux 7.5 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score,
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    =====================================================================
                       Red Hat Security Advisory
    
    Synopsis:          Important: libssh2 security update
    Advisory ID:       RHSA-2019:1791-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2019:1791
    Issue date:        2019-07-16
    CVE Names:         CVE-2019-3855 CVE-2019-3856 CVE-2019-3857 
                       CVE-2019-3863 
    =====================================================================
    
    1. Summary:
    
    An update for libssh2 is now available for Red Hat Enterprise Linux 7.5
    Extended Update Support.
    
    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 ComputeNode EUS (v. 7.5) - x86_64
    Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) - noarch, x86_64
    Red Hat Enterprise Linux Server EUS (v. 7.5) - ppc64, ppc64le, s390x, x86_64
    Red Hat Enterprise Linux Server Optional EUS (v. 7.5) - noarch, ppc64, ppc64le, s390x, x86_64
    
    3. Description:
    
    The libssh2 packages provide a library that implements the SSH2 protocol.
    
    Security Fix(es):
    
    * libssh2: Integer overflow in transport read resulting in out of bounds
    write (CVE-2019-3855)
    
    * libssh2: Integer overflow in keyboard interactive handling resulting in
    out of bounds write (CVE-2019-3856)
    
    * libssh2: Integer overflow in SSH packet processing channel resulting in
    out of bounds write (CVE-2019-3857)
    
    * libssh2: Integer overflow in user authenticate keyboard interactive
    allows out-of-bounds writes (CVE-2019-3863)
    
    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
    
    After installing these updated packages, all running applications using
    libssh2 must be restarted for this update to take effect.
    
    5. Bugs fixed (https://bugzilla.redhat.com/):
    
    1687303 - CVE-2019-3855 libssh2: Integer overflow in transport read resulting in out of bounds write
    1687304 - CVE-2019-3856 libssh2: Integer overflow in keyboard interactive handling resulting in out of bounds write
    1687305 - CVE-2019-3857 libssh2: Integer overflow in SSH packet processing channel resulting in out of bounds write
    1687313 - CVE-2019-3863 libssh2: Integer overflow in user authenticate keyboard interactive allows out-of-bounds writes
    
    6. Package List:
    
    Red Hat Enterprise Linux ComputeNode EUS (v. 7.5):
    
    Source:
    libssh2-1.4.3-11.el7_5.1.src.rpm
    
    x86_64:
    libssh2-1.4.3-11.el7_5.1.i686.rpm
    libssh2-1.4.3-11.el7_5.1.x86_64.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.i686.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.x86_64.rpm
    
    Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5):
    
    noarch:
    libssh2-docs-1.4.3-11.el7_5.1.noarch.rpm
    
    x86_64:
    libssh2-debuginfo-1.4.3-11.el7_5.1.i686.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.x86_64.rpm
    libssh2-devel-1.4.3-11.el7_5.1.i686.rpm
    libssh2-devel-1.4.3-11.el7_5.1.x86_64.rpm
    
    Red Hat Enterprise Linux Server EUS (v. 7.5):
    
    Source:
    libssh2-1.4.3-11.el7_5.1.src.rpm
    
    ppc64:
    libssh2-1.4.3-11.el7_5.1.ppc.rpm
    libssh2-1.4.3-11.el7_5.1.ppc64.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.ppc.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.ppc64.rpm
    
    ppc64le:
    libssh2-1.4.3-11.el7_5.1.ppc64le.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.ppc64le.rpm
    
    s390x:
    libssh2-1.4.3-11.el7_5.1.s390.rpm
    libssh2-1.4.3-11.el7_5.1.s390x.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.s390.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.s390x.rpm
    
    x86_64:
    libssh2-1.4.3-11.el7_5.1.i686.rpm
    libssh2-1.4.3-11.el7_5.1.x86_64.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.i686.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.x86_64.rpm
    
    Red Hat Enterprise Linux Server Optional EUS (v. 7.5):
    
    noarch:
    libssh2-docs-1.4.3-11.el7_5.1.noarch.rpm
    
    ppc64:
    libssh2-debuginfo-1.4.3-11.el7_5.1.ppc.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.ppc64.rpm
    libssh2-devel-1.4.3-11.el7_5.1.ppc.rpm
    libssh2-devel-1.4.3-11.el7_5.1.ppc64.rpm
    
    ppc64le:
    libssh2-debuginfo-1.4.3-11.el7_5.1.ppc64le.rpm
    libssh2-devel-1.4.3-11.el7_5.1.ppc64le.rpm
    
    s390x:
    libssh2-debuginfo-1.4.3-11.el7_5.1.s390.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.s390x.rpm
    libssh2-devel-1.4.3-11.el7_5.1.s390.rpm
    libssh2-devel-1.4.3-11.el7_5.1.s390x.rpm
    
    x86_64:
    libssh2-debuginfo-1.4.3-11.el7_5.1.i686.rpm
    libssh2-debuginfo-1.4.3-11.el7_5.1.x86_64.rpm
    libssh2-devel-1.4.3-11.el7_5.1.i686.rpm
    libssh2-devel-1.4.3-11.el7_5.1.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-2019-3855
    https://access.redhat.com/security/cve/CVE-2019-3856
    https://access.redhat.com/security/cve/CVE-2019-3857
    https://access.redhat.com/security/cve/CVE-2019-3863
    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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