K51743312: NTP vulnerability CVE-2018-7183

Security Advisory Description 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. CVE-2018-7183 Impact There is no impact; F5 products are not...

K44305703: NTP vulnerability CVE-2020-11868

Security Advisory Description The ntpd daemon 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 orig...

K13540723: NTP vulnerability CVE-2018-7184

Security Advisory Description 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...

K96670746: NTP vulnerability CVE-2017-6464

Security Advisory Description NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows remote attackers to cause a denial of service ntpd crash via a malformed mode configuration directive. CVE-2017-6464 Impact A remote, authenticated attacker may abuse this vulnerability using a crafted message to cau...

K17518: NTP vulnerability CVE-2015-7871

Security Advisory Description Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to bypass authentication. CVE-2015-7871 Impact An unauthenticated remote attacker may force ntpd processes on targeted servers to peer with time sources of the...

K13304944: NTP vulnerability CVE-2015-7974

Security Advisory Description 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." CVE-2015-7974 Impact...

K03331206: NTP vulnerability CVE-2016-4955

Security Advisory Description 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...

K15934: NTP vulnerability CVE-2014-9293

Security Advisory Description The configauth function in ntpd in NTP before 4.2.7p11, when an auth key is not configured, improperly generates a key, which makes it easier for remote attackers to defeat cryptographic protection mechanisms via a brute-force attack. CVE-2014-9293 Impact Default NTP...

K61363039: NTP vulnerability CVE-2019-8936

Security Advisory Description NTP through 4.2.8p12 has a NULL Pointer Dereference. CVE-2019-8936 Impact There is no impact; F5 products are not affected by this vulnerability. Security Advisory Status F5 Product Development has evaluated the currently supported releases for potential vulnerabilit...

K55376430: NTP vulnerabilities CVE-2020-13817

Security Advisory Description The ntpd in the network time protocol NTP before 4.2.8p14, and in 4.3.x before 4.3.100, allows remote attackers to cause a denial-of-service DoS, either daemon exit or system time change, by predicting transmit timestamps for use in spoofed packets. The victim must b...

K44942017: NTP vulnerability CVE-2014-5209

Security Advisory Description An Information Disclosure vulnerability exists in NTP 4.2.7p25 private mode 6/7 messages via a GETRESTRICT control message, which could let a malicious user obtain sensitive information. CVE-2014-5209 Impact An attacker may be able to prompt the network time protocol...

K92800352: NTP vulnerability CVE-2016-4953

Security Advisory Description 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. CVE-2016-4953 Impact There is no impact; F5 products...

K82644737: NTP vulnerability CVE-2016-4954

Security Advisory Description The processpacket function in ntpproto.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...

K21230183: NTP vulnerability CVE-2015-7976

Security Advisory Description 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. CVE-2015-7976 Impact A remote user who uses the ntp...

K11251130: NTP vulnerability CVE-2016-1547

Security Advisory Description 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...

K43205719: NTP input validation vulnerability CVE-2016-1550

Security Advisory Description An exploitable vulnerability exists in the message authentication functionality of libntp in ntp 4.2.8p4 and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92. An attacker can send a series of crafted messages to attempt to recover the message digest key. CVE-2016-1550...

K45427159: NTP authentication bypass vulnerability CVE-2016-1551

Security Advisory Description ntpd in NTP 4.2.8p3 and NTPsec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 relies on the underlying operating system to protect it from requests that impersonate reference clocks. Because reference clocks are treated like other peers and stored in the same structure, an...

K24613253: NTP vulnerability CVE-2016-2516

Security Advisory Description 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. CVE-2016-2516 Impact An attacker may be able to compromise the...

K20804323: NTP vulnerability CVE-2016-2518

Security Advisory Description The MATCHASSOC 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. CVE-2016-2518 Using a crafted packet to create a peer association with hmode 7...

K74363721: NTP vulnerability CVE-2015-7975

Security Advisory Description 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. CVE-2015-7975 Impact A remote attacker could potentially use this flaw to...