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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2708 Moderate: ntp security update 27 October 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: ntp Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 Impact/Access: Denial of Service -- Existing Account Resolution: Mitigation CVE Names: CVE-2017-6464 CVE-2017-6463 CVE-2017-6462 Reference: ESB-2017.2425 ESB-2017.2125 ESB-2017.1681 ESB-2017.1355 ESB-2017.0973 ESB-2017.0947 Original Bulletin: https://access.redhat.com/errata/RHSA-2017:3071 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: ntp security update Advisory ID: RHSA-2017:3071-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:3071 Issue date: 2017-10-26 CVE Names: CVE-2017-6462 CVE-2017-6463 CVE-2017-6464 ===================================================================== 1. Summary: An update for ntp is now available for Red Hat Enterprise Linux 6. 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 Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, noarch, x86_64 3. Description: The Network Time Protocol (NTP) is used to synchronize a computer's time with another referenced time source. These packages include the ntpd service which continuously adjusts system time and utilities used to query and configure the ntpd service. Security Fix(es): * Two vulnerabilities were discovered in the NTP server's parsing of configuration directives. A remote, authenticated attacker could cause ntpd to crash by sending a crafted message. (CVE-2017-6463, CVE-2017-6464) * A vulnerability was found in NTP, in the parsing of packets from the /dev/datum device. A malicious device could send crafted messages, causing ntpd to crash. (CVE-2017-6462) Red Hat would like to thank the NTP project for reporting these issues. Upstream acknowledges Cure53 as the original reporter of these issues. 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 this update, the ntpd daemon will restart automatically. 5. Bugs fixed (https://bugzilla.redhat.com/): 1433987 - CVE-2017-6464 ntp: Denial of Service via Malformed Config 1433995 - CVE-2017-6462 ntp: Buffer Overflow in DPTS Clock 1434002 - CVE-2017-6463 ntp: Authenticated DoS via Malicious Config Option 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: ntp-4.2.6p5-12.el6_9.1.src.rpm i386: ntp-4.2.6p5-12.el6_9.1.i686.rpm ntp-debuginfo-4.2.6p5-12.el6_9.1.i686.rpm ntpdate-4.2.6p5-12.el6_9.1.i686.rpm x86_64: ntp-4.2.6p5-12.el6_9.1.x86_64.rpm ntp-debuginfo-4.2.6p5-12.el6_9.1.x86_64.rpm ntpdate-4.2.6p5-12.el6_9.1.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: ntp-debuginfo-4.2.6p5-12.el6_9.1.i686.rpm ntp-perl-4.2.6p5-12.el6_9.1.i686.rpm noarch: ntp-doc-4.2.6p5-12.el6_9.1.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-12.el6_9.1.x86_64.rpm ntp-perl-4.2.6p5-12.el6_9.1.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: ntp-4.2.6p5-12.el6_9.1.src.rpm x86_64: ntp-4.2.6p5-12.el6_9.1.x86_64.rpm ntp-debuginfo-4.2.6p5-12.el6_9.1.x86_64.rpm ntpdate-4.2.6p5-12.el6_9.1.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): noarch: ntp-doc-4.2.6p5-12.el6_9.1.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-12.el6_9.1.x86_64.rpm ntp-perl-4.2.6p5-12.el6_9.1.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: ntp-4.2.6p5-12.el6_9.1.src.rpm i386: ntp-4.2.6p5-12.el6_9.1.i686.rpm ntp-debuginfo-4.2.6p5-12.el6_9.1.i686.rpm ntpdate-4.2.6p5-12.el6_9.1.i686.rpm ppc64: ntp-4.2.6p5-12.el6_9.1.ppc64.rpm ntp-debuginfo-4.2.6p5-12.el6_9.1.ppc64.rpm ntpdate-4.2.6p5-12.el6_9.1.ppc64.rpm s390x: ntp-4.2.6p5-12.el6_9.1.s390x.rpm ntp-debuginfo-4.2.6p5-12.el6_9.1.s390x.rpm ntpdate-4.2.6p5-12.el6_9.1.s390x.rpm x86_64: ntp-4.2.6p5-12.el6_9.1.x86_64.rpm ntp-debuginfo-4.2.6p5-12.el6_9.1.x86_64.rpm ntpdate-4.2.6p5-12.el6_9.1.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: ntp-debuginfo-4.2.6p5-12.el6_9.1.i686.rpm ntp-perl-4.2.6p5-12.el6_9.1.i686.rpm noarch: ntp-doc-4.2.6p5-12.el6_9.1.noarch.rpm ppc64: ntp-debuginfo-4.2.6p5-12.el6_9.1.ppc64.rpm ntp-perl-4.2.6p5-12.el6_9.1.ppc64.rpm s390x: ntp-debuginfo-4.2.6p5-12.el6_9.1.s390x.rpm ntp-perl-4.2.6p5-12.el6_9.1.s390x.rpm x86_64: ntp-debuginfo-4.2.6p5-12.el6_9.1.x86_64.rpm ntp-perl-4.2.6p5-12.el6_9.1.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ntp-4.2.6p5-12.el6_9.1.src.rpm i386: ntp-4.2.6p5-12.el6_9.1.i686.rpm ntp-debuginfo-4.2.6p5-12.el6_9.1.i686.rpm ntpdate-4.2.6p5-12.el6_9.1.i686.rpm x86_64: ntp-4.2.6p5-12.el6_9.1.x86_64.rpm ntp-debuginfo-4.2.6p5-12.el6_9.1.x86_64.rpm ntpdate-4.2.6p5-12.el6_9.1.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: ntp-debuginfo-4.2.6p5-12.el6_9.1.i686.rpm ntp-perl-4.2.6p5-12.el6_9.1.i686.rpm noarch: ntp-doc-4.2.6p5-12.el6_9.1.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-12.el6_9.1.x86_64.rpm ntp-perl-4.2.6p5-12.el6_9.1.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-2017-6462 https://access.redhat.com/security/cve/CVE-2017-6463 https://access.redhat.com/security/cve/CVE-2017-6464 https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFZ8YjJXlSAg2UNWIIRAl5XAKCD4YehEHndXtBxlT6m+bjPStUsXACggZYV Eo90Bbtz1nN7kLidWddRJ2I= =Yjhr - -----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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