RedHat: RHSA-2019-3525:01 Moderate: dhcp security and bug fix update

    Date05 Nov 2019
    CategoryRed Hat
    37
    Posted ByLinuxSecurity Advisories
    An update for dhcp is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from
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                       Red Hat Security Advisory
    
    Synopsis:          Moderate: dhcp security and bug fix update
    Advisory ID:       RHSA-2019:3525-01
    Product:           Red Hat Enterprise Linux
    Advisory URL:      https://access.redhat.com/errata/RHSA-2019:3525
    Issue date:        2019-11-05
    CVE Names:         CVE-2019-6470 
    =====================================================================
    
    1. Summary:
    
    An update for dhcp is now available for Red Hat Enterprise Linux 8.
    
    Red Hat Product Security has rated this update as having a security impact
    of Moderate. 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 BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64
    
    3. Description:
    
    The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows
    individual devices on an IP network to get their own network configuration
    information, including an IP address, a subnet mask, and a broadcast
    address. The dhcp packages provide a relay agent and ISC DHCP service
    required to enable and administer DHCP on a network.
    
    Security Fix(es):
    
    * dhcp: double-deletion of the released addresses in the dhcpv6 code
    leading to crash and possible DoS (CVE-2019-6470)
    
    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.
    
    Additional Changes:
    
    For detailed information on changes in this release, see the Red Hat
    Enterprise Linux 8.1 Release Notes linked from 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/):
    
    1660865 - ISC dhcpd cannot start TLS session to 389-DS after updating openldap rpm
    1685560 - Avoid unnecessary DHCPD restarts by NetworkManager on certain UP events w.r.t. bug #565921
    1708641 - CVE-2019-6470 dhcp: double-deletion of the released addresses in the dhcpv6 code leading to crash and possible DoS
    
    6. Package List:
    
    Red Hat Enterprise Linux BaseOS (v. 8):
    
    Source:
    dhcp-4.3.6-34.el8.src.rpm
    
    aarch64:
    dhcp-client-4.3.6-34.el8.aarch64.rpm
    dhcp-client-debuginfo-4.3.6-34.el8.aarch64.rpm
    dhcp-debuginfo-4.3.6-34.el8.aarch64.rpm
    dhcp-debugsource-4.3.6-34.el8.aarch64.rpm
    dhcp-libs-4.3.6-34.el8.aarch64.rpm
    dhcp-libs-debuginfo-4.3.6-34.el8.aarch64.rpm
    dhcp-relay-4.3.6-34.el8.aarch64.rpm
    dhcp-relay-debuginfo-4.3.6-34.el8.aarch64.rpm
    dhcp-server-4.3.6-34.el8.aarch64.rpm
    dhcp-server-debuginfo-4.3.6-34.el8.aarch64.rpm
    
    noarch:
    dhcp-common-4.3.6-34.el8.noarch.rpm
    
    ppc64le:
    dhcp-client-4.3.6-34.el8.ppc64le.rpm
    dhcp-client-debuginfo-4.3.6-34.el8.ppc64le.rpm
    dhcp-debuginfo-4.3.6-34.el8.ppc64le.rpm
    dhcp-debugsource-4.3.6-34.el8.ppc64le.rpm
    dhcp-libs-4.3.6-34.el8.ppc64le.rpm
    dhcp-libs-debuginfo-4.3.6-34.el8.ppc64le.rpm
    dhcp-relay-4.3.6-34.el8.ppc64le.rpm
    dhcp-relay-debuginfo-4.3.6-34.el8.ppc64le.rpm
    dhcp-server-4.3.6-34.el8.ppc64le.rpm
    dhcp-server-debuginfo-4.3.6-34.el8.ppc64le.rpm
    
    s390x:
    dhcp-client-4.3.6-34.el8.s390x.rpm
    dhcp-client-debuginfo-4.3.6-34.el8.s390x.rpm
    dhcp-debuginfo-4.3.6-34.el8.s390x.rpm
    dhcp-debugsource-4.3.6-34.el8.s390x.rpm
    dhcp-libs-4.3.6-34.el8.s390x.rpm
    dhcp-libs-debuginfo-4.3.6-34.el8.s390x.rpm
    dhcp-relay-4.3.6-34.el8.s390x.rpm
    dhcp-relay-debuginfo-4.3.6-34.el8.s390x.rpm
    dhcp-server-4.3.6-34.el8.s390x.rpm
    dhcp-server-debuginfo-4.3.6-34.el8.s390x.rpm
    
    x86_64:
    dhcp-client-4.3.6-34.el8.x86_64.rpm
    dhcp-client-debuginfo-4.3.6-34.el8.i686.rpm
    dhcp-client-debuginfo-4.3.6-34.el8.x86_64.rpm
    dhcp-debuginfo-4.3.6-34.el8.i686.rpm
    dhcp-debuginfo-4.3.6-34.el8.x86_64.rpm
    dhcp-debugsource-4.3.6-34.el8.i686.rpm
    dhcp-debugsource-4.3.6-34.el8.x86_64.rpm
    dhcp-libs-4.3.6-34.el8.i686.rpm
    dhcp-libs-4.3.6-34.el8.x86_64.rpm
    dhcp-libs-debuginfo-4.3.6-34.el8.i686.rpm
    dhcp-libs-debuginfo-4.3.6-34.el8.x86_64.rpm
    dhcp-relay-4.3.6-34.el8.x86_64.rpm
    dhcp-relay-debuginfo-4.3.6-34.el8.i686.rpm
    dhcp-relay-debuginfo-4.3.6-34.el8.x86_64.rpm
    dhcp-server-4.3.6-34.el8.x86_64.rpm
    dhcp-server-debuginfo-4.3.6-34.el8.i686.rpm
    dhcp-server-debuginfo-4.3.6-34.el8.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-2019-6470
    https://access.redhat.com/security/updates/classification/#moderate
    https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.1_release_notes/
    
    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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