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Search Parameters:
  • Results Type: Overview
  • Keyword (text search): cpe:2.3:a:ntp:ntp:4.2.8:p6:*:*:*:*:*:*
There are 23 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-2018-7183

Buffer overflow in the decodearr function in ntpq in ntp 4.2.8p6 through 4.2.8p10 allows remote attackers to execute arbitrary code by leveraging an ntpq query and sending a response with a crafted array.

Published: March 08, 2018; 3:29:00 PM -0500
V3.0: 9.8 CRITICAL
V2.0: 7.5 HIGH
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-2018-7182

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.

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-2017-6458

Multiple buffer overflows in the ctl_put* functions in NTP before 4.2.8p10 and 4.3.x before 4.3.94 allow remote authenticated users to have unspecified impact via a long variable.

Published: March 27, 2017; 1:59:00 PM -0400
V3.1: 8.8 HIGH
V2.0: 6.5 MEDIUM
CVE-2016-2519

ntpd in NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (ntpd abort) by a large request data value, which triggers the ctl_getitem function to return a NULL value.

Published: January 30, 2017; 4:59:01 PM -0500
V3.0: 5.9 MEDIUM
V2.0: 4.9 MEDIUM
CVE-2016-2518

The MATCH_ASSOC function in NTP before version 4.2.8p9 and 4.3.x before 4.3.92 allows remote attackers to cause an out-of-bounds reference via an addpeer request with a large hmode value.

Published: January 30, 2017; 4:59:01 PM -0500
V3.1: 5.3 MEDIUM
V2.0: 5.0 MEDIUM
CVE-2016-2517

NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (prevent subsequent authentication) by leveraging knowledge of the controlkey or requestkey and sending a crafted packet to ntpd, which changes the value of trustedkey, controlkey, or requestkey. NOTE: this vulnerability exists because of a CVE-2016-2516 regression.

Published: January 30, 2017; 4:59:01 PM -0500
V3.0: 5.3 MEDIUM
V2.0: 4.9 MEDIUM
CVE-2016-2516

NTP before 4.2.8p7 and 4.3.x before 4.3.92, when mode7 is enabled, allows remote attackers to cause a denial of service (ntpd abort) by using the same IP address multiple times in an unconfig directive.

Published: January 30, 2017; 4:59:01 PM -0500
V3.0: 5.3 MEDIUM
V2.0: 7.1 HIGH
CVE-2015-8140

The ntpq protocol in NTP before 4.2.8p7 allows remote attackers to conduct replay attacks by sniffing the network.

Published: January 30, 2017; 4:59:00 PM -0500
V3.0: 4.8 MEDIUM
V2.0: 5.8 MEDIUM
CVE-2015-8139

ntpq in NTP before 4.2.8p7 allows remote attackers to obtain origin timestamps and then impersonate peers via unspecified vectors.

Published: January 30, 2017; 4:59:00 PM -0500
V3.0: 5.3 MEDIUM
V2.0: 5.0 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-2016-7428

ntpd in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (reject broadcast mode packets) via the poll interval in a broadcast packet.

Published: January 13, 2017; 11:59:00 AM -0500
V3.0: 4.3 MEDIUM
V2.0: 3.3 LOW
CVE-2016-7427

The broadcast mode replay prevention functionality in ntpd in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (reject broadcast mode packets) via a crafted broadcast mode packet.

Published: January 13, 2017; 11:59:00 AM -0500
V3.0: 4.3 MEDIUM
V2.0: 3.3 LOW
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