CVE-2016-7426
Fixed in a distro release EPSS 12%
NTP before 4.2.8p9 rate limits responses received from the configured sources when rate limiting for all associations is enabled, which allows remote attackers to cause a denial of service (prevent responses from the sources) by sending responses with a spoofed source address.
Products: ntp, canonical ubuntu_linux, redhat enterprise_linux_desktop, redhat enterprise_linux_server, redhat enterprise_linux_server_aus, redhat enterprise_linux_server_eus, redhat enterprise_linux_server_tus, redhat enterprise_linux_workstation, hpe hpux-ntp
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2 | ntp | 4.2.6p5-28.amzn2.2.1 |
| Amazon Linux 2 | ntp-doc | 4.2.6p5-28.amzn2.2.1 |
| Amazon Linux 2 | ntp-perl | 4.2.6p5-28.amzn2.2.1 |
| Amazon Linux 2 | ntpdate | 4.2.6p5-28.amzn2.2.1 |
| Amazon Linux 2 | sntp | 4.2.6p5-28.amzn2.2.1 |
| Arch Linux | ntp | 4.2.8.p9-1 |
| Debian 11 | ntp | 1:4.2.8p9+dfsg-1 |
| Red Hat Enterprise Linux 6 | ntp | 0:4.2.6p5-10.el6_8.2 |
| Red Hat Enterprise Linux 6 | ntp-debuginfo | 0:4.2.6p5-10.el6_8.2 |
| Red Hat Enterprise Linux 6 | ntp-doc | 0:4.2.6p5-10.el6_8.2 |
| Red Hat Enterprise Linux 6 | ntp-perl | 0:4.2.6p5-10.el6_8.2 |
| Red Hat Enterprise Linux 6 | ntpdate | 0:4.2.6p5-10.el6_8.2 |
| Red Hat Enterprise Linux 7 | ntp | 0:4.2.6p5-25.el7_3.1 |
| Red Hat Enterprise Linux 7 | ntp-debuginfo | 0:4.2.6p5-25.el7_3.1 |
| Red Hat Enterprise Linux 7 | ntp-doc | 0:4.2.6p5-25.el7_3.1 |
| Red Hat Enterprise Linux 7 | ntp-perl | 0:4.2.6p5-25.el7_3.1 |
| Red Hat Enterprise Linux 7 | ntpdate | 0:4.2.6p5-25.el7_3.1 |
| Red Hat Enterprise Linux 7 | sntp | 0:4.2.6p5-25.el7_3.1 |
| SUSE Linux Enterprise Desktop 12 SP1 | ntp | 4.2.8p9-55.1 |
| SUSE Linux Enterprise Desktop 12 SP2 | ntp | 4.2.8p9-55.1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | ntp | 4.2.8p9-48.9.1 |
| SUSE Linux Enterprise Server 11 SP2-LTSS | ntp | 4.2.8p9-48.9.1 |
| SUSE Linux Enterprise Server 11 SP3-LTSS | ntp | 4.2.8p9-48.9.1 |
| SUSE Linux Enterprise Server 11 SP3-TERADATA | ntp | 4.2.8p9-48.9.1 |
| SUSE Linux Enterprise Server 11 SP4 | ntp | 4.2.8p9-57.2 |
| SUSE Linux Enterprise Server 12 SP1 | ntp | 4.2.8p9-55.1 |
| SUSE Linux Enterprise Server 12 SP2 | ntp | 4.2.8p9-55.1 |
| SUSE Linux Enterprise Server 12-LTSS | ntp | 4.2.8p9-46.18.1 |
| SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 | ntp | 4.2.8p9-55.1 |
| SUSE Linux Enterprise Server for SAP Applications 11 SP4 | ntp | 4.2.8p9-57.2 |
| SUSE Linux Enterprise Server for SAP Applications 12 | ntp | 4.2.8p9-46.18.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP1 | ntp | 4.2.8p9-55.1 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | ntp | 4.2.8p9-55.1 |
| SUSE Manager 2.1 | ntp | 4.2.8p9-48.9.1 |
| SUSE Manager Proxy 2.1 | ntp | 4.2.8p9-48.9.1 |
| SUSE OpenStack Cloud 5 | ntp | 4.2.8p9-48.9.1 |
| Ubuntu 14.04 LTS | ntp | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.11 |
| Ubuntu 16.04 LTS | ntp | 1:4.2.8p4+dfsg-3ubuntu5.5 |
| openSUSE Tumbleweed | ntp | 4.2.8p9-1.1 |