Vulnerabilities > NTP > NTP > High
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2020-06-04 | CVE-2020-13817 | Use of Insufficiently Random Values vulnerability in multiple products ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. | 7.4 |
| 2020-04-17 | CVE-2020-11868 | Origin Validation Error vulnerability in multiple products ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp. | 7.5 |
| 2019-05-15 | CVE-2019-8936 | NULL Pointer Dereference vulnerability in multiple products NTP through 4.2.8p12 has a NULL Pointer Dereference. | 7.5 |
| 2019-04-18 | CVE-2019-11331 | Unspecified vulnerability in NTP Network Time Protocol (NTP), as specified in RFC 5905, uses port 123 even for modes where a fixed port number is not required, which makes it easier for remote attackers to conduct off-path attacks. | 8.1 |
| 2018-03-06 | CVE-2018-7185 | The protocol engine in ntp 4.2.6 before 4.2.8p11 allows a remote attackers to cause a denial of service (disruption) by continually sending a packet with a zero-origin timestamp and source IP address of the "other side" of an interleaved association causing the victim ntpd to reset its association. | 7.5 |
| 2018-03-06 | CVE-2018-7184 | ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. | 7.5 |
| 2018-03-06 | CVE-2018-7182 | Out-of-bounds Read vulnerability in multiple products The ctl_getitem method in ntpd in ntp-4.2.8p6 before 4.2.8p11 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted mode 6 packet with a ntpd instance from 4.2.8p6 through 4.2.8p10. | 7.5 |
| 2017-08-09 | CVE-2015-3405 | Insufficient Entropy vulnerability in multiple products ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the temp variable is between 0x20 and 0x7f and not #, which might allow remote attackers to obtain the value of generated MD5 keys via a brute force attack with the 93 possible keys. | 7.5 |
| 2017-08-07 | CVE-2015-7854 | Classic Buffer Overflow vulnerability in multiple products Buffer overflow in the password management functionality in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a crafted key file. | 8.8 |
| 2017-08-07 | CVE-2015-7849 | Use After Free vulnerability in multiple products Use-after-free vulnerability in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote authenticated users to possibly execute arbitrary code or cause a denial of service (crash) via crafted packets. | 8.8 |