news 28 Posted November 26, 2015 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: ntp security update Advisory ID: RHSA-2015:2520-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-2520.html Issue date: 2015-11-26 CVE Names: CVE-2015-7704 ===================================================================== 1. Summary: Updated ntp packages that fix one security issue are now available for Red Hat Enterprise Linux 6.5 and 6.6 Extended Update Support. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.5) - noarch, x86_64 Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.6) - noarch, x86_64 Red Hat Enterprise Linux HPC Node EUS (v. 6.5) - x86_64 Red Hat Enterprise Linux HPC Node EUS (v. 6.6) - x86_64 Red Hat Enterprise Linux Server EUS (v. 6.5) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server EUS (v. 6.6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 6.5) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 6.6) - i386, noarch, ppc64, s390x, x86_64 3. Description: The Network Time Protocol (NTP) is used to synchronize a computer's time with a referenced time source. It was discovered that ntpd as a client did not correctly check timestamps in Kiss-of-Death packets. A remote attacker could use this flaw to send a crafted Kiss-of-Death packet to an ntpd client that would increase the client's polling interval value, and effectively disable synchronization with the server. (CVE-2015-7704) Red Hat would like to thank Aanchal Malhotra, Isaac E. Cohen, and Sharon Goldberg of Boston University for reporting this issue. All ntp users are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing the update, the ntpd daemon will restart automatically. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1271070 - CVE-2015-7704 ntp: disabling synchronization via crafted KoD packet 6. Package List: Red Hat Enterprise Linux HPC Node EUS (v. 6.5): Source: ntp-4.2.6p5-2.el6_5.1.src.rpm x86_64: ntp-4.2.6p5-2.el6_5.1.x86_64.rpm ntp-debuginfo-4.2.6p5-2.el6_5.1.x86_64.rpm ntpdate-4.2.6p5-2.el6_5.1.x86_64.rpm Red Hat Enterprise Linux HPC Node EUS (v. 6.6): Source: ntp-4.2.6p5-3.el6_6.1.src.rpm x86_64: ntp-4.2.6p5-3.el6_6.1.x86_64.rpm ntp-debuginfo-4.2.6p5-3.el6_6.1.x86_64.rpm ntpdate-4.2.6p5-3.el6_6.1.x86_64.rpm Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.5): Source: ntp-4.2.6p5-2.el6_5.1.src.rpm noarch: ntp-doc-4.2.6p5-2.el6_5.1.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-2.el6_5.1.x86_64.rpm ntp-perl-4.2.6p5-2.el6_5.1.x86_64.rpm Red Hat Enterprise Linux Compute Node Optional EUS (v. 6.6): noarch: ntp-doc-4.2.6p5-3.el6_6.1.noarch.rpm x86_64: ntp-debuginfo-4.2.6p5-3.el6_6.1.x86_64.rpm ntp-perl-4.2.6p5-3.el6_6.1.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 6.5): Source: ntp-4.2.6p5-2.el6_5.1.src.rpm i386: ntp-4.2.6p5-2.el6_5.1.i686.rpm ntp-debuginfo-4.2.6p5-2.el6_5.1.i686.rpm ntpdate-4.2.6p5-2.el6_5.1.i686.rpm ppc64: ntp-4.2.6p5-2.el6_5.1.ppc64.rpm ntp-debuginfo-4.2.6p5-2.el6_5.1.ppc64.rpm ntpdate-4.2.6p5-2.el6_5.1.ppc64.rpm s390x: ntp-4.2.6p5-2.el6_5.1.s390x.rpm ntp-debuginfo-4.2.6p5-2.el6_5.1.s390x.rpm ntpdate-4.2.6p5-2.el6_5.1.s390x.rpm x86_64: ntp-4.2.6p5-2.el6_5.1.x86_64.rpm ntp-debuginfo-4.2.6p5-2.el6_5.1.x86_64.rpm ntpdate-4.2.6p5-2.el6_5.1.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 6.6): Source: ntp-4.2.6p5-3.el6_6.1.src.rpm i386: ntp-4.2.6p5-3.el6_6.1.i686.rpm ntp-debuginfo-4.2.6p5-3.el6_6.1.i686.rpm ntpdate-4.2.6p5-3.el6_6.1.i686.rpm ppc64: ntp-4.2.6p5-3.el6_6.1.ppc64.rpm ntp-debuginfo-4.2.6p5-3.el6_6.1.ppc64.rpm ntpdate-4.2.6p5-3.el6_6.1.ppc64.rpm s390x: ntp-4.2.6p5-3.el6_6.1.s390x.rpm ntp-debuginfo-4.2.6p5-3.el6_6.1.s390x.rpm ntpdate-4.2.6p5-3.el6_6.1.s390x.rpm x86_64: ntp-4.2.6p5-3.el6_6.1.x86_64.rpm ntp-debuginfo-4.2.6p5-3.el6_6.1.x86_64.rpm ntpdate-4.2.6p5-3.el6_6.1.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 6.5): Source: ntp-4.2.6p5-2.el6_5.1.src.rpm i386: ntp-debuginfo-4.2.6p5-2.el6_5.1.i686.rpm ntp-perl-4.2.6p5-2.el6_5.1.i686.rpm noarch: ntp-doc-4.2.6p5-2.el6_5.1.noarch.rpm ppc64: ntp-debuginfo-4.2.6p5-2.el6_5.1.ppc64.rpm ntp-perl-4.2.6p5-2.el6_5.1.ppc64.rpm s390x: ntp-debuginfo-4.2.6p5-2.el6_5.1.s390x.rpm ntp-perl-4.2.6p5-2.el6_5.1.s390x.rpm x86_64: ntp-debuginfo-4.2.6p5-2.el6_5.1.x86_64.rpm ntp-perl-4.2.6p5-2.el6_5.1.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 6.6): i386: ntp-debuginfo-4.2.6p5-3.el6_6.1.i686.rpm ntp-perl-4.2.6p5-3.el6_6.1.i686.rpm noarch: ntp-doc-4.2.6p5-3.el6_6.1.noarch.rpm ppc64: ntp-debuginfo-4.2.6p5-3.el6_6.1.ppc64.rpm ntp-perl-4.2.6p5-3.el6_6.1.ppc64.rpm s390x: ntp-debuginfo-4.2.6p5-3.el6_6.1.s390x.rpm ntp-perl-4.2.6p5-3.el6_6.1.s390x.rpm x86_64: ntp-debuginfo-4.2.6p5-3.el6_6.1.x86_64.rpm ntp-perl-4.2.6p5-3.el6_6.1.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-2015-7704 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2015 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFWVxQRXlSAg2UNWIIRAn3FAJ9kauV52JaskxqIQrOKCK9OQ3zn/ACfbn/9 IGHD8SGjeD8S9bWrpmj4v2I= =ub4I -----END PGP SIGNATURE----- -- Share this post Link to post
