ID de Prueba:	1.3.6.1.4.1.25623.1.0.882307
Categoría:	CentOS Local Security Checks
Título:	CentOS Update for ntp CESA-2015:1930 centos7
Resumen:	Check the version of ntp
Descripción:	Summary: Check the version of ntp Vulnerability Insight: 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) It was found that ntpd did not correctly implement the threshold limitation for the '-g' option, which is used to set the time without any restrictions. A man-in-the-middle attacker able to intercept NTP traffic between a connecting client and an NTP server could use this flaw to force that client to make multiple steps larger than the panic threshold, effectively changing the time to an arbitrary value. (CVE-2015-5300) Red Hat would like to thank Aanchal Malhotra, Isaac E. Cohen, and Sharon Goldberg of Boston University for reporting these issues. All ntp users are advised to upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the update, the ntpd daemon will restart automatically. Affected Software/OS: ntp on CentOS 7 Solution: Please install the updated packages. CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2015-5300 BugTraq ID: 77312 http://www.securityfocus.com/bid/77312 Debian Security Information: DSA-3388 (Google Search) http://www.debian.org/security/2015/dsa-3388 http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170684.html http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177507.html FreeBSD Security Advisory: FreeBSD-SA-16:02 https://www.freebsd.org/security/advisories/FreeBSD-SA-16:02.ntp.asc https://ics-cert.us-cert.gov/advisories/ICSA-15-356-01 https://www.cs.bu.edu/~goldbe/NTPattack.html http://seclists.org/bugtraq/2016/Feb/164 RedHat Security Advisories: RHSA-2015:1930 http://rhn.redhat.com/errata/RHSA-2015-1930.html http://www.securitytracker.com/id/1034670 SuSE Security Announcement: SUSE-SU:2016:1175 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html SuSE Security Announcement: SUSE-SU:2016:1177 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html SuSE Security Announcement: SUSE-SU:2016:1247 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html SuSE Security Announcement: SUSE-SU:2016:1311 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html SuSE Security Announcement: SUSE-SU:2016:1912 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html SuSE Security Announcement: SUSE-SU:2016:2094 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html SuSE Security Announcement: openSUSE-SU:2016:1292 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html SuSE Security Announcement: openSUSE-SU:2016:1423 (Google Search) http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html http://www.ubuntu.com/usn/USN-2783-1 Common Vulnerability Exposure (CVE) ID: CVE-2015-7704 BugTraq ID: 77280 http://www.securityfocus.com/bid/77280 CERT/CC vulnerability note: VU#718152 https://www.kb.cert.org/vuls/id/718152 https://security.gentoo.org/glsa/201607-15 https://eprint.iacr.org/2015/1020.pdf https://www.arista.com/en/support/advisories-notices/security-advisories/1212-security-advisory-0016 RedHat Security Advisories: RHSA-2015:2520 http://rhn.redhat.com/errata/RHSA-2015-2520.html http://www.securitytracker.com/id/1033951
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