USN-3707-1

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USN-3707-1

Summary: ntp vulnerabilities

Details: Yihan Lian discovered that NTP incorrectly handled certain malformed mode 6 packets. A remote attacker could possibly use this issue to cause ntpd to crash, resulting in a denial of service. This issue only affected Ubuntu 17.10 and Ubuntu 18.04 LTS. (CVE-2018-7182) Michael Macnair discovered that NTP incorrectly handled certain responses. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2018-7183) Miroslav Lichvar discovered that NTP incorrectly handled certain zero-origin timestamps. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 17.10 and Ubuntu 18.04 LTS. (CVE-2018-7184) Miroslav Lichvar discovered that NTP incorrectly handled certain zero-origin timestamps. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2018-7185)

References: https://ubuntu.com/security/notices/USN-3707-1, https://ubuntu.com/security/CVE-2018-7182, https://ubuntu.com/security/CVE-2018-7183, https://ubuntu.com/security/CVE-2018-7184, https://ubuntu.com/security/CVE-2018-7185