cpe:2.3:a:ntp:ntp:4.2.5p63:*:*:*:*:*:*:*
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.
Max CVSS
7.4
EPSS Score
3.90%
Published
2020-06-04
Updated
2022-03-29
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.
Max CVSS
7.5
EPSS Score
3.26%
Published
2020-04-17
Updated
2022-04-26
NTP through 4.2.8p12 has a NULL Pointer Dereference.
Max CVSS
7.5
EPSS Score
0.60%
Published
2019-05-15
Updated
2020-10-07
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.
Max CVSS
5.3
EPSS Score
0.14%
Published
2018-03-06
Updated
2020-06-18
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.
Max CVSS
8.8
EPSS Score
0.49%
Published
2017-03-27
Updated
2021-07-12
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.
Max CVSS
5.3
EPSS Score
2.03%
Published
2016-07-05
Updated
2021-07-16
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.
Max CVSS
5.9
EPSS Score
1.83%
Published
2016-07-05
Updated
2021-07-16
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.
Max CVSS
7.5
EPSS Score
2.29%
Published
2016-07-05
Updated
2021-07-16
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.
Max CVSS
7.5
EPSS Score
2.32%
Published
2016-07-05
Updated
2021-07-16
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.
Max CVSS
5.3
EPSS Score
0.31%
Published
2017-01-30
Updated
2021-06-10
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.
Max CVSS
5.9
EPSS Score
1.35%
Published
2017-01-30
Updated
2022-02-01
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."
Max CVSS
7.7
EPSS Score
0.29%
Published
2016-01-26
Updated
2021-04-26
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.
Max CVSS
6.5
EPSS Score
0.67%
Published
2017-01-30
Updated
2021-04-26
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.
Max CVSS
6.5
EPSS Score
97.07%
Published
2017-08-07
Updated
2021-04-19
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.
Max CVSS
8.8
EPSS Score
0.84%
Published
2017-08-07
Updated
2020-06-18
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.
Max CVSS
9.8
EPSS Score
7.28%
Published
2017-08-07
Updated
2021-07-16
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.
Max CVSS
5.9
EPSS Score
3.70%
Published
2017-08-07
Updated
2020-06-18
Directory traversal vulnerability in the save_config function in ntpd in ntp_control.c in NTP before 4.2.8p4, when used on systems that do not use '\' or '/' characters for directory separation such as OpenVMS, allows remote authenticated users to overwrite arbitrary files.
Max CVSS
6.5
EPSS Score
0.18%
Published
2020-01-28
Updated
2020-06-18
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.
Max CVSS
6.5
EPSS Score
0.86%
Published
2017-08-07
Updated
2020-06-18
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.
Max CVSS
8.8
EPSS Score
1.01%
Published
2017-08-07
Updated
2020-06-18
The rate limiting feature in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to have unspecified impact via a large number of crafted requests.
Max CVSS
9.8
EPSS Score
1.22%
Published
2017-08-07
Updated
2021-11-17
The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted "KOD" messages.
Max CVSS
7.5
EPSS Score
87.35%
Published
2017-08-07
Updated
2021-11-17
The "pidfile" or "driftfile" directives in NTP ntpd 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77, when ntpd is configured to allow remote configuration, allows remote attackers with an IP address that is allowed to send configuration requests, and with knowledge of the remote configuration password to write to arbitrary files via the :config command.
Max CVSS
7.5
EPSS Score
35.16%
Published
2017-07-24
Updated
2020-06-18
The crypto_xmit 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). NOTE: This vulnerability exists due to an incomplete fix for CVE-2014-9750.
Max CVSS
6.5
EPSS Score
1.36%
Published
2017-08-07
Updated
2020-06-18
Memory leak in the CRYPTO_ASSOC 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 (memory consumption).
Max CVSS
7.5
EPSS Score
4.50%
Published
2017-08-07
Updated
2020-06-18
37 vulnerabilities found
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