Ubuntu Security Notice 3707-2 - USN-3707-1 and USN-3349-1 fixed several vulnerabilities in NTP. This update provides the corresponding update for Ubuntu 12.04 ESM. Miroslav Lichvar discovered that NTP incorrectly handled certain spoofed addresses when performing rate limiting. A remote attacker could possibly use this issue to perform a denial of service. Various other issues were also addressed.
491d58f999c7eea8810601c09831b240d9aedad6123ec22fdeec53a32edec41bRed Hat Security Advisory 2018-0855-01 - The Network Time Protocol 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. Issues addressed include buffer overflow and denial of service vulnerabilities.
4a78c80aef46206aa7281f9eb4e8a4ca9f1ac3c620a95d367e667ec6903f6175Red Hat Security Advisory 2017-3071-01 - The Network Time Protocol 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: 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.
83d626d761ac5b1571348346a206a3346fbe4cc8a141d14a89a1ac2a9aad2203Apple Security Advisory 2017-09-25-1 - macOS High Sierra 10.13 is now available and addresses denial of service, insecure transit, and various other vulnerabilities.
56a33c5e5ed39ad993bf22ead073e39949c0c55274f11b40248081e1873fc193Ubuntu Security Notice 3349-1 - Yihan Lian discovered that NTP incorrectly handled certain large request data values. A remote attacker could possibly use this issue to cause NTP to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS. Miroslav Lichvar discovered that NTP incorrectly handled certain spoofed addresses when performing rate limiting. A remote attacker could possibly use this issue to perform a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 16.10. Various other issues were also addressed.
359f86f0252b15d6299bffee359feeea850698a32c5afa2a570d94db465a75abSlackware Security Advisory - New ntp packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, 14.2, and -current to fix security issues.
8ebef10dc26715edf05044fa1397cb02c9aaa68b0b15d9b0882c1f4e80053a4aFreeBSD Security Advisory - A vulnerability was discovered in the NTP server's parsing of configuration directives. A vulnerability was found in NTP, in the parsing of packets from the DPTS Clock. A vulnerability was discovered in the NTP server's parsing of configuration directives. A vulnerability was found in NTP, affecting the origin timestamp check function. A remote, authenticated attacker could cause ntpd to crash by sending a crafted message. A malicious device could send crafted messages, causing ntpd to crash. An attacker able to spoof messages from all of the configured peers could send crafted packets to ntpd, causing later replies from those peers to be discarded, resulting in denial of service.
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