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.
491d58f999c7eea8810601c09831b240d9aedad6123ec22fdeec53a32edec41bUbuntu 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.
359f86f0252b15d6299bffee359feeea850698a32c5afa2a570d94db465a75abHPE Security Bulletin HPESBUX03706 1 - Potential security vulnerabilities have been identified in the HP-UX-NTP service running ntpd. These vulnerabilities could be exploited remotely to allow a denial of service (DoS), unauthorized modification, and access restriction bypass. Revision 1 of this advisory.
1b4eef10352a8be82656e108c32a07e6007d14cd20ec65cd19f4dbf4f1217e7eRed Hat Security Advisory 2017-0252-01 - 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: It was found that when ntp is configured with rate limiting for all associations the limits are also applied to responses received from its configured sources. A remote attacker who knows the sources can cause a denial of service by preventing ntpd from accepting valid responses from its sources.
e1bad53734e5d3bf7a50e7a4efe74c3ec410e5733fd4963d1997818ac1dd059fFreeBSD Security Advisory - Multiple vulnerabilities have been discovered in the NTP suite.
33824530cddd9387168daf3f7afeba89dddbc5899597c45b606169369c028f6b
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