CVE-2016-7429 log

Source
Severity Low
Remote Yes
Type Denial of service
Description
When ntpd receives a server response on a socket that corresponds to a different interface than was used for the request, the peer structure is updated to use the interface for new requests. If ntpd is running on a host with multiple interfaces in separate networks and the operating system doesn't check source address in received packets (e.g. rp_filter on Linux is set to 0), an attacker that knows the address of the source can send a packet with spoofed source address which will cause ntpd to select wrong interface for the source and prevent it from sending new requests until the list of interfaces is refreshed, which happens on routing changes or every 5 minutes by default. If the attack is repeated often enough (once per second), ntpd will not be able to synchronize with the source.
Group Package Affected Fixed Severity Status Ticket
AVG-80 ntp 4.2.8.p8-1 4.2.8.p9-1 High Fixed
AVG-79 ntp 4.2.8.p8-1 4.2.8.p9-1 High Fixed
Date Advisory Group Package Severity Description
26 Nov 2016 ASA-201611-28 AVG-79 ntp High multiple issues
References
http://support.ntp.org/bin/view/Main/NtpBug3072