-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: dhcp security and bug fix update Advisory ID: RHSA-2019:2060-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:2060 Issue date: 2019-08-06 CVE Names: CVE-2019-6470 ==================================================================== 1. Summary: An update for dhcp is now available for Red Hat Enterprise Linux 7. 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 Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - 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 7.7 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/): 1574292 - "dhclient -I" shows "cant find device client" after upgrade 1613174 - ISC dhcpd cannot start TLS session to 389-DS after updating openldap rpm 1623792 - /var/lib/dhcpd/dhcpd.leases: file is too long to buffer. is displayed when dhcpd tries to start. 1672308 - Avoid unnecessary DHCPD restarts by NetworkManager on certain UP events w.r.t. bug #565921 1677382 - dhcp does not compile with rebased bind 9.11 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 Client (v. 7): Source: dhcp-4.2.5-77.el7.src.rpm x86_64: dhclient-4.2.5-77.el7.x86_64.rpm dhcp-common-4.2.5-77.el7.x86_64.rpm dhcp-debuginfo-4.2.5-77.el7.i686.rpm dhcp-debuginfo-4.2.5-77.el7.x86_64.rpm dhcp-libs-4.2.5-77.el7.i686.rpm dhcp-libs-4.2.5-77.el7.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: dhcp-4.2.5-77.el7.x86_64.rpm dhcp-debuginfo-4.2.5-77.el7.i686.rpm dhcp-debuginfo-4.2.5-77.el7.x86_64.rpm dhcp-devel-4.2.5-77.el7.i686.rpm dhcp-devel-4.2.5-77.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: dhcp-4.2.5-77.el7.src.rpm x86_64: dhclient-4.2.5-77.el7.x86_64.rpm dhcp-common-4.2.5-77.el7.x86_64.rpm dhcp-debuginfo-4.2.5-77.el7.i686.rpm dhcp-debuginfo-4.2.5-77.el7.x86_64.rpm dhcp-libs-4.2.5-77.el7.i686.rpm dhcp-libs-4.2.5-77.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: dhcp-4.2.5-77.el7.x86_64.rpm dhcp-debuginfo-4.2.5-77.el7.i686.rpm dhcp-debuginfo-4.2.5-77.el7.x86_64.rpm dhcp-devel-4.2.5-77.el7.i686.rpm dhcp-devel-4.2.5-77.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: dhcp-4.2.5-77.el7.src.rpm ppc64: dhclient-4.2.5-77.el7.ppc64.rpm dhcp-4.2.5-77.el7.ppc64.rpm dhcp-common-4.2.5-77.el7.ppc64.rpm dhcp-debuginfo-4.2.5-77.el7.ppc.rpm dhcp-debuginfo-4.2.5-77.el7.ppc64.rpm dhcp-libs-4.2.5-77.el7.ppc.rpm dhcp-libs-4.2.5-77.el7.ppc64.rpm ppc64le: dhclient-4.2.5-77.el7.ppc64le.rpm dhcp-4.2.5-77.el7.ppc64le.rpm dhcp-common-4.2.5-77.el7.ppc64le.rpm dhcp-debuginfo-4.2.5-77.el7.ppc64le.rpm dhcp-libs-4.2.5-77.el7.ppc64le.rpm s390x: dhclient-4.2.5-77.el7.s390x.rpm dhcp-4.2.5-77.el7.s390x.rpm dhcp-common-4.2.5-77.el7.s390x.rpm dhcp-debuginfo-4.2.5-77.el7.s390.rpm dhcp-debuginfo-4.2.5-77.el7.s390x.rpm dhcp-libs-4.2.5-77.el7.s390.rpm dhcp-libs-4.2.5-77.el7.s390x.rpm x86_64: dhclient-4.2.5-77.el7.x86_64.rpm dhcp-4.2.5-77.el7.x86_64.rpm dhcp-common-4.2.5-77.el7.x86_64.rpm dhcp-debuginfo-4.2.5-77.el7.i686.rpm dhcp-debuginfo-4.2.5-77.el7.x86_64.rpm dhcp-libs-4.2.5-77.el7.i686.rpm dhcp-libs-4.2.5-77.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: dhcp-debuginfo-4.2.5-77.el7.ppc.rpm dhcp-debuginfo-4.2.5-77.el7.ppc64.rpm dhcp-devel-4.2.5-77.el7.ppc.rpm dhcp-devel-4.2.5-77.el7.ppc64.rpm ppc64le: dhcp-debuginfo-4.2.5-77.el7.ppc64le.rpm dhcp-devel-4.2.5-77.el7.ppc64le.rpm s390x: dhcp-debuginfo-4.2.5-77.el7.s390.rpm dhcp-debuginfo-4.2.5-77.el7.s390x.rpm dhcp-devel-4.2.5-77.el7.s390.rpm dhcp-devel-4.2.5-77.el7.s390x.rpm x86_64: dhcp-debuginfo-4.2.5-77.el7.i686.rpm dhcp-debuginfo-4.2.5-77.el7.x86_64.rpm dhcp-devel-4.2.5-77.el7.i686.rpm dhcp-devel-4.2.5-77.el7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: dhcp-4.2.5-77.el7.src.rpm x86_64: dhclient-4.2.5-77.el7.x86_64.rpm dhcp-4.2.5-77.el7.x86_64.rpm dhcp-common-4.2.5-77.el7.x86_64.rpm dhcp-debuginfo-4.2.5-77.el7.i686.rpm dhcp-debuginfo-4.2.5-77.el7.x86_64.rpm dhcp-libs-4.2.5-77.el7.i686.rpm dhcp-libs-4.2.5-77.el7.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: dhcp-debuginfo-4.2.5-77.el7.i686.rpm dhcp-debuginfo-4.2.5-77.el7.x86_64.rpm dhcp-devel-4.2.5-77.el7.i686.rpm dhcp-devel-4.2.5-77.el7.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/7/html/7.7_release_notes/index 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXUl4qNzjgjWX9erEAQgBeA/7Bfx5XDBbouwPsp+5GdG10TdfovAljXQb fnu9+AARllE3nrUw5cAne7GleaUX7w8ZGBBi83wjiWC7rIcTQ6/Vv8VF+qLQZrpe nQWL5kqowfOn84/a0+NXF1s8XNwUwETEAQubP8kSBtMYMulptt4LPIO0E3sJ/DsX IM+95WdVDnocWs8A6cztL44b2y44d5OI5QWh0PmRfYqjRwUIkGxh3zjvC9tAt3+o 8XzxLTosywbKoJAEv8JHUqrcbPjE2CzrhabcHbqT7bLupGm5oJJyaIyZb/DR7HJd nrPehOsxMe9WI928d4sEYfADARU9Fr4v2hBm4G3bPDr+wx6jzWt+NFbKAhCh8Ev7 2NXS3O7rfHQjnltv8wdC8OtIr0zoA429LIcalgwoAKJ0XTkGaohJX/0xkmkxAdt4 R9czf6BG75AylGxYB9r1/ix80jKs+UIVwoKbPl7kT4lOZr8J/K6TAezAuPZDInfk i0+c1swek3lKPEx1xFJPgePKCAV39NdagFxX+ApKYOcZBntg+3EYn3KcaB7KHIDV k3vPrAYbaD+Ccc4eYwReE5GoflLUr67Alqfo8CKhIvRartYu7RsOj1W7jzOwngN6 XEO2WfyNmQg/YoN7OfjA4EcgvBmY1ZCSYTqBq3eNbtroPmQ3A/DSnYjH06UIMDtu 3NHikqGVpYE=IHX9 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce