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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0271 Moderate: dhcp security update 29 January 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: dhcp Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 7 Red Hat Enterprise Linux WS/Desktop 7 UNIX variants (UNIX, Linux, OSX) Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-3144 Original Bulletin: https://access.redhat.com/errata/RHSA-2018:0158 Comment: This advisory references vulnerabilities in products which run on platforms other than Red Hat. It is recommended that administrators running dhcp check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: dhcp security update Advisory ID: RHSA-2018:0158-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0158 Issue date: 2018-01-25 CVE Names: CVE-2017-3144 ===================================================================== 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 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, ppc64le 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): * It was found that the DHCP daemon did not properly clean up closed OMAPI connections in certain cases. A remote attacker able to connect to the OMAPI port could use this flaw to exhaust file descriptors in the DHCP daemon, leading to a denial of service in the OMAPI functionality. (CVE-2017-3144) 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/): 1522918 - CVE-2017-3144 dhcp: omapi code doesn't free socket descriptors when empty message is received allowing denial-of-service 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: dhcp-4.2.5-58.el7_4.1.src.rpm x86_64: dhclient-4.2.5-58.el7_4.1.x86_64.rpm dhcp-common-4.2.5-58.el7_4.1.x86_64.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.i686.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.x86_64.rpm dhcp-libs-4.2.5-58.el7_4.1.i686.rpm dhcp-libs-4.2.5-58.el7_4.1.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: dhcp-4.2.5-58.el7_4.1.x86_64.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.i686.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.x86_64.rpm dhcp-devel-4.2.5-58.el7_4.1.i686.rpm dhcp-devel-4.2.5-58.el7_4.1.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: dhcp-4.2.5-58.el7_4.1.src.rpm x86_64: dhclient-4.2.5-58.el7_4.1.x86_64.rpm dhcp-common-4.2.5-58.el7_4.1.x86_64.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.i686.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.x86_64.rpm dhcp-libs-4.2.5-58.el7_4.1.i686.rpm dhcp-libs-4.2.5-58.el7_4.1.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: dhcp-4.2.5-58.el7_4.1.x86_64.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.i686.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.x86_64.rpm dhcp-devel-4.2.5-58.el7_4.1.i686.rpm dhcp-devel-4.2.5-58.el7_4.1.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: dhcp-4.2.5-58.el7_4.1.src.rpm ppc64: dhclient-4.2.5-58.el7_4.1.ppc64.rpm dhcp-4.2.5-58.el7_4.1.ppc64.rpm dhcp-common-4.2.5-58.el7_4.1.ppc64.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.ppc.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.ppc64.rpm dhcp-libs-4.2.5-58.el7_4.1.ppc.rpm dhcp-libs-4.2.5-58.el7_4.1.ppc64.rpm ppc64le: dhclient-4.2.5-58.el7_4.1.ppc64le.rpm dhcp-4.2.5-58.el7_4.1.ppc64le.rpm dhcp-common-4.2.5-58.el7_4.1.ppc64le.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.ppc64le.rpm dhcp-libs-4.2.5-58.el7_4.1.ppc64le.rpm s390x: dhclient-4.2.5-58.el7_4.1.s390x.rpm dhcp-4.2.5-58.el7_4.1.s390x.rpm dhcp-common-4.2.5-58.el7_4.1.s390x.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.s390.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.s390x.rpm dhcp-libs-4.2.5-58.el7_4.1.s390.rpm dhcp-libs-4.2.5-58.el7_4.1.s390x.rpm x86_64: dhclient-4.2.5-58.el7_4.1.x86_64.rpm dhcp-4.2.5-58.el7_4.1.x86_64.rpm dhcp-common-4.2.5-58.el7_4.1.x86_64.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.i686.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.x86_64.rpm dhcp-libs-4.2.5-58.el7_4.1.i686.rpm dhcp-libs-4.2.5-58.el7_4.1.x86_64.rpm Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7): Source: dhcp-4.2.5-58.el7_4.1.src.rpm aarch64: dhclient-4.2.5-58.el7_4.1.aarch64.rpm dhcp-4.2.5-58.el7_4.1.aarch64.rpm dhcp-common-4.2.5-58.el7_4.1.aarch64.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.aarch64.rpm dhcp-libs-4.2.5-58.el7_4.1.aarch64.rpm ppc64le: dhclient-4.2.5-58.el7_4.1.ppc64le.rpm dhcp-4.2.5-58.el7_4.1.ppc64le.rpm dhcp-common-4.2.5-58.el7_4.1.ppc64le.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.ppc64le.rpm dhcp-libs-4.2.5-58.el7_4.1.ppc64le.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: dhcp-debuginfo-4.2.5-58.el7_4.1.ppc.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.ppc64.rpm dhcp-devel-4.2.5-58.el7_4.1.ppc.rpm dhcp-devel-4.2.5-58.el7_4.1.ppc64.rpm ppc64le: dhcp-debuginfo-4.2.5-58.el7_4.1.ppc64le.rpm dhcp-devel-4.2.5-58.el7_4.1.ppc64le.rpm s390x: dhcp-debuginfo-4.2.5-58.el7_4.1.s390.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.s390x.rpm dhcp-devel-4.2.5-58.el7_4.1.s390.rpm dhcp-devel-4.2.5-58.el7_4.1.s390x.rpm x86_64: dhcp-debuginfo-4.2.5-58.el7_4.1.i686.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.x86_64.rpm dhcp-devel-4.2.5-58.el7_4.1.i686.rpm dhcp-devel-4.2.5-58.el7_4.1.x86_64.rpm Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7): aarch64: dhcp-debuginfo-4.2.5-58.el7_4.1.aarch64.rpm dhcp-devel-4.2.5-58.el7_4.1.aarch64.rpm ppc64le: dhcp-debuginfo-4.2.5-58.el7_4.1.ppc64le.rpm dhcp-devel-4.2.5-58.el7_4.1.ppc64le.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: dhcp-4.2.5-58.el7_4.1.src.rpm x86_64: dhclient-4.2.5-58.el7_4.1.x86_64.rpm dhcp-4.2.5-58.el7_4.1.x86_64.rpm dhcp-common-4.2.5-58.el7_4.1.x86_64.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.i686.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.x86_64.rpm dhcp-libs-4.2.5-58.el7_4.1.i686.rpm dhcp-libs-4.2.5-58.el7_4.1.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: dhcp-debuginfo-4.2.5-58.el7_4.1.i686.rpm dhcp-debuginfo-4.2.5-58.el7_4.1.x86_64.rpm dhcp-devel-4.2.5-58.el7_4.1.i686.rpm dhcp-devel-4.2.5-58.el7_4.1.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-2017-3144 https://access.redhat.com/security/updates/classification/#moderate https://kb.isc.org/article/AA-01541 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFaab9lXlSAg2UNWIIRAlrxAKCOViC0yNOFXGR0zVHBQfVzhsh6IwCgwSEY h1g3iK0NFqiiJIk+aba9/Rk= =Q5N1 - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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