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  • Results Type: Overview
  • Keyword (text search): cpe:2.3:a:ntp:ntp:4.2.8:p5:*:*:*:*:*:*
There are 21 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
CVE-2020-13817

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. The victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can query time from the victim's ntpd instance.

Published: June 04, 2020; 9:15:11 AM -0400
V3.1: 7.4 HIGH
V2.0: 5.8 MEDIUM
CVE-2020-11868

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.

Published: April 17, 2020; 12:15:10 AM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2019-8936

NTP through 4.2.8p12 has a NULL Pointer Dereference.

Published: May 15, 2019; 12:29:01 PM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
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.

Published: March 06, 2018; 3:29:01 PM -0500
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
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. This issue is a result of an incomplete fix for CVE-2015-7704.

Published: March 06, 2018; 3:29:01 PM -0500
V3.0: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2018-7170

ntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549.

Published: March 06, 2018; 3:29:01 PM -0500
V3.1: 5.3 MEDIUM
V2.0: 3.5 LOW
CVE-2015-8158

The getresponse function in ntpq in NTP versions before 4.2.8p9 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (infinite loop) via crafted packets with incorrect values.

Published: January 30, 2017; 4:59:00 PM -0500
V3.0: 5.9 MEDIUM
V2.0: 4.3 MEDIUM
CVE-2015-8138

NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero.

Published: January 30, 2017; 4:59:00 PM -0500
V3.0: 5.3 MEDIUM
V2.0: 5.0 MEDIUM
CVE-2015-7979

NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (client-server association tear down) by sending broadcast packets with invalid authentication to a broadcast client.

Published: January 30, 2017; 4:59:00 PM -0500
V3.0: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2015-7978

NTP before 4.2.8p6 and 4.3.0 before 4.3.90 allows a remote attackers to cause a denial of service (stack exhaustion) via an ntpdc relist command, which triggers recursive traversal of the restriction list.

Published: January 30, 2017; 4:59:00 PM -0500
V3.0: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2015-7977

ntpd in NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (NULL pointer dereference) via a ntpdc reslist command.

Published: January 30, 2017; 4:59:00 PM -0500
V3.0: 5.9 MEDIUM
V2.0: 4.3 MEDIUM
CVE-2015-7976

The ntpq saveconfig command in NTP 4.1.2, 4.2.x before 4.2.8p6, 4.3, 4.3.25, 4.3.70, and 4.3.77 does not properly filter special characters, which allows attackers to cause unspecified impact via a crafted filename.

Published: January 30, 2017; 4:59:00 PM -0500
V3.0: 4.3 MEDIUM
V2.0: 4.0 MEDIUM
CVE-2015-7975

The nextvar function in NTP before 4.2.8p6 and 4.3.x before 4.3.90 does not properly validate the length of its input, which allows an attacker to cause a denial of service (application crash).

Published: January 30, 2017; 4:59:00 PM -0500
V3.0: 6.2 MEDIUM
V2.0: 2.1 LOW
CVE-2015-7973

NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network.

Published: January 30, 2017; 4:59:00 PM -0500
V3.0: 6.5 MEDIUM
V2.0: 5.8 MEDIUM
CVE-2016-7434

The read_mru_list function in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (crash) via a crafted mrulist query.

Published: January 13, 2017; 11:59:00 AM -0500
V3.1: 7.5 HIGH
V2.0: 4.3 MEDIUM
CVE-2016-7426

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.

Published: January 13, 2017; 11:59:00 AM -0500
V3.1: 7.5 HIGH
V2.0: 4.3 MEDIUM
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. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-1548.

Published: July 04, 2016; 9:59:03 PM -0400
V3.1: 5.3 MEDIUM
V2.0: 5.0 MEDIUM
CVE-2016-4955

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.

Published: July 04, 2016; 9:59:02 PM -0400
V3.1: 5.9 MEDIUM
V2.0: 4.3 MEDIUM
CVE-2016-4954

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.

Published: July 04, 2016; 9:59:01 PM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2016-4953

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.

Published: July 04, 2016; 9:59:00 PM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM