K51444934: NTP vulnerability CVE-2016-7426

Security Advisory Description 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...

K87922456: NTP vulnerability CVE-2016-9310

Security Advisory Description The control mode mode 6 functionality in ntpd in NTP before 4.2.8p9 allows remote attackers to set or unset traps via a crafted control mode packet. CVE-2016-9310 Impact In default configurations, F5 products are not vulnerable. If you remove the default restrict...

K17530: NTP vulnerabilities CVE-2015-7691, CVE-2015-7692, and CVE-2015-7702

Security Advisory Description CVE-2015-7691 The cryptoxmit function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service crash via crafted packets containing particular autokey operations. NOTE: This vulnerability exists due to an...

K63326092: NTP vulnerability CVE-2016-7434

Security Advisory Description The readmrulist function in NTP before 4.2.8p9 allows remote attackers to cause a denial of service crash via a crafted mrulist query. CVE-2016-7434 Impact There is no impact; F5 products are not affected by this vulnerability. Security Advisory Status F5 Product...

K16506: NTP vulnerability CVE-2015-1799

Security Advisory Description The symmetric-key feature in the receive function in ntpproto.c in ntpd in NTP 3.x and 4.x before 4.2.8p2 performs state-variable updates upon receiving certain invalid packets, which makes it easier for man-in-the-middle attackers to cause a denial of service...

K17515: NTP vulnerability CVE-2015-7855

Security Advisory Description The decodenetnum function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service assertion failure via a 6 or mode 7 packet containing a long data value. CVE-2015-7855 Impact A locally authenticated user may ...

K17528: NTP vulnerability CVE-2015-7850

Security Advisory Description ntpd 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 infinite loop or crash by pointing the key file at the log file. CVE-2015-7850 Impact Under certain specific conditions, an attacker can send a se...

K17516: NTP vulnerability CVE-2015-7852

Security Advisory Description ntpq in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service crash via crafted mode 6 response packets. CVE-2015-7852 Impact While the scope of the impact is limited, an attacker may be able to craft response packets...

K17526: NTP vulnerability CVE-2015-7848

Security Advisory Description An integer overflow can occur in NTP-dev.4.3.70 leading to an out-of-bounds memory copy operation when processing a specially crafted private mode packet. The crafted packet needs to have the correct message authentication code and a valid timestamp. When processed b...

K17525: NTP vulnerability CVE-2015-7853

Security Advisory Description The datalen parameter in the refclock driver in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to execute arbitrary code or cause a denial of service crash via a negative input value. CVE-2015-7853 Impact Running a custom refclock driver in...

K05046514: NTP vulnerability CVE-2015-7979

Security Advisory Description 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. CVE-2015-7979 Impact An attacker may exploit this...

K38742515: NTP vulnerability CVE-2018-7182

Security Advisory Description The ctlgetitem 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. CVE-2018-7182 Impact There is no impact; F5 products a...

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...