HPE Security Bulletin HPESBHF03766 1 - Potential security vulnerabilities with NTP have been addressed for HPE network products including Comware 5 used in certain ConvergedSystem 700 solutions. The vulnerabilities could be remotely exploited resulting in Denial of Service (DoS) or unauthorized modification, or locally exploited resulting in Denial of Service (DoS). Revision 1 of this advisory.
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HPE Security Bulletin HPESBHF03750 1 - Potential security vulnerabilities with NTP have been addressed for HPE network products including Comware 5, Comware 7 and VCX. The vulnerabilities could be remotely exploited resulting in Denial of Service (DoS) or unauthorized modification, or locally exploited resulting in Denial of Service (DoS). Revision 1 of this advisory.
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Ubuntu Security Notice 3096-1 - Aanchal Malhotra discovered that NTP incorrectly handled authenticated broadcast mode. A remote attacker could use this issue to perform a replay attack. Matt Street discovered that NTP incorrectly verified peer associations of symmetric keys. A remote attacker could use this issue to perform an impersonation attack. Jonathan Gardner discovered that the NTP ntpq utility incorrectly handled memory. An attacker could possibly use this issue to cause ntpq to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS. Various other issues were also addressed.
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Debian Linux Security Advisory 3629-1 - Several vulnerabilities were discovered in the Network Time Protocol daemon and utility programs.
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Gentoo Linux Security Advisory 201607-15 - Multiple vulnerabilities have been found in NTP, the worst of which could lead to Denial of Service. Versions less than 4.2.8_p8 are affected.
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Slackware Security Advisory - New ntp packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, and -current to fix security issues.
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Slackware Security Advisory - New ntp packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, and -current to fix security issues.
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Red Hat Security Advisory 2016-0063-01 - The Network Time Protocol 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 the originate timestamp in received packets. A remote attacker could use this flaw to send a crafted packet to an ntpd client that would effectively disable synchronization with the server, or push arbitrary offset/delay measurements to modify the time on the client. 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.
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