Vulnerabilities > NTP > NTP > 4.2.8
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2017-01-06 | CVE-2016-1549 | Data Processing Errors vulnerability in NTP 4.2.8 A malicious authenticated peer can create arbitrarily-many ephemeral associations in order to win the clock selection algorithm in ntpd in NTP 4.2.8p4 and earlier and NTPsec 3e160db8dc248a0bcb053b56a80167dc742d2b74 and a5fb34b9cc89b92a8fef2f459004865c93bb7f92 and modify a victim's clock. | 4.0 |
| 2017-01-06 | CVE-2016-1548 | Data Processing Errors vulnerability in NTP 4.2.8 An attacker can spoof a packet from a legitimate ntpd server with an origin timestamp that matches the peer->dst timestamp recorded for that server. | 6.4 |
| 2017-01-06 | CVE-2016-1547 | Improper Input Validation vulnerability in NTP An off-path attacker can cause a preemptible client association to be demobilized in NTP 4.2.8p4 and earlier and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 by sending a crypto NAK packet to a victim client with a spoofed source address of an existing associated peer. | 5.0 |
| 2016-07-05 | CVE-2016-4957 | NULL Pointer Dereference vulnerability in multiple products ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. | 5.0 |
| 2016-07-05 | CVE-2016-4956 | ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (interleaved-mode transition and time change) via a spoofed broadcast packet. | 5.3 |
| 2016-07-05 | CVE-2016-4955 | Race Condition vulnerability in multiple products ntpd in NTP 4.x before 4.2.8p8, when autokey is enabled, allows remote attackers to cause a denial of service (peer-variable clearing and association outage) by sending (1) a spoofed crypto-NAK packet or (2) a packet with an incorrect MAC value at a certain time. | 5.9 |
| 2016-07-05 | CVE-2016-4954 | Race Condition vulnerability in multiple products The process_packet function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (peer-variable modification) by sending spoofed packets from many source IP addresses in a certain scenario, as demonstrated by triggering an incorrect leap indication. | 7.5 |
| 2016-07-05 | CVE-2016-4953 | Improper Authentication vulnerability in multiple products ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (ephemeral-association demobilization) by sending a spoofed crypto-NAK packet with incorrect authentication data at a certain time. | 5.0 |
| 2016-01-26 | CVE-2015-7974 | Improper Authentication vulnerability in multiple products NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key." | 4.0 |
| 2015-10-06 | CVE-2014-9751 | Improper Input Validation vulnerability in multiple products The read_network_packet function in ntp_io.c in ntpd in NTP 4.x before 4.2.8p1 on Linux and OS X does not properly determine whether a source IP address is an IPv6 loopback address, which makes it easier for remote attackers to spoof restricted packets, and read or write to the runtime state, by leveraging the ability to reach the ntpd machine's network interface with a packet from the ::1 address. | 6.8 |