NTP before 4.2.8p9 changes the peer structure to the interface it receives the response from a source, which allows remote attackers to cause a denial of service (prevent communication with a source) by sending a response for a source to an interface the source does not use.
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "binary_name": "ntp", "binary_version": "1:4.2.6.p5+dfsg-3ubuntu2.14.04.11" }, { "binary_name": "ntp-dbgsym", "binary_version": "1:4.2.6.p5+dfsg-3ubuntu2.14.04.11" }, { "binary_name": "ntp-doc", "binary_version": "1:4.2.6.p5+dfsg-3ubuntu2.14.04.11" }, { "binary_name": "ntpdate", "binary_version": "1:4.2.6.p5+dfsg-3ubuntu2.14.04.11" }, { "binary_name": "ntpdate-dbgsym", "binary_version": "1:4.2.6.p5+dfsg-3ubuntu2.14.04.11" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "binary_name": "ntp", "binary_version": "1:4.2.8p4+dfsg-3ubuntu5.5" }, { "binary_name": "ntp-dbgsym", "binary_version": "1:4.2.8p4+dfsg-3ubuntu5.5" }, { "binary_name": "ntp-doc", "binary_version": "1:4.2.8p4+dfsg-3ubuntu5.5" }, { "binary_name": "ntpdate", "binary_version": "1:4.2.8p4+dfsg-3ubuntu5.5" }, { "binary_name": "ntpdate-dbgsym", "binary_version": "1:4.2.8p4+dfsg-3ubuntu5.5" } ] }