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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.4138 dhcp security and bug fix update 6 November 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: dhcp Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 8 Red Hat Enterprise Linux WS/Desktop 8 Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-6470 Reference: ESB-2019.3831.2 ESB-2019.2933 Original Bulletin: https://access.redhat.com/errata/RHSA-2019:3525 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== 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 <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2019 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXcHqa9zjgjWX9erEAQgVqw/+Jb+HynhC8wDjBpskRE+rty/78iFDxPAo bV+qlHs/48gklsq9233hMByO2+CEei1QZusPvxPRRBxwILhXE/V1ck9jfl1wwRFQ +k6NpTiI+snEN6IRSFyZceedxVWm/Vde86YpXkJabBV3T4JD9/czvQ7EQo1/VcXr XW745dvNQ9AHefPiubgpf4XH1HElgLDAwW9bSQbKKBsAibFj7CT8TJBS1erBKDd3 9ThwXEYPXRpKhqtuQxZ8D6xY5EBV5Or/T4hgPKr3s8EfqTI6fFNgug0b1aDWfj2a tC+IV+emGz89rVKbKfUNzNAq3hLTysjP8BKlUNaR9k3z+Gft+b0rEHVbQd1RWVjQ zRswwk+nMDNbFlkEXuusphVN0ln7wtZxYnZ1KXm3P3BYPnRHsutuSdvk+/OZKGBs eecqTBk+di45WxmDx0q+Ab7jjvDM2tNtJ5fNZQZrqk32+XOgnaFtxSoU1HGqBWM7 aM4O3Ye8sSj2motiTrwO0IyT+nFcKwKE6xnuxjWDcj7eMtGW8YiR1t/KjWQknKif 1yPtFSBFfD0ROZ0nq1qjhseh2oTpH0FKJ6hau8X/Q6lhZtcLesaN9LSv25I1txp2 LOSEHz2ecKngGJHHFDONRUFE7pB19oVQj2rVf2o6p7288qJkUz0dVp0AKun5CcZM y3sycxFWf3w= =ICLO - -----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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