Vulnerabilities (CVE)

Filtered by vendor Ntp Subscribe
Filtered by product Ntp
Total 98 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2016-7433 1 Ntp 1 Ntp 2025-04-20 5.0 MEDIUM 5.3 MEDIUM
NTP before 4.2.8p9 does not properly perform the initial sync calculations, which allows remote attackers to unspecified impact via unknown vectors, related to a "root distance that did not include the peer dispersion."
CVE-2016-1549 1 Ntp 1 Ntp 2025-04-20 4.0 MEDIUM 6.5 MEDIUM
A malicious authenticated peer can create arbitrarily-many ephemeral associations in order to win the clock selection algorithm in ntpd in NTP 4.2.8p4 and earlier and NTPsec 3e160db8dc248a0bcb053b56a80167dc742d2b74 and a5fb34b9cc89b92a8fef2f459004865c93bb7f92 and modify a victim's clock.
CVE-2016-7427 1 Ntp 1 Ntp 2025-04-20 3.3 LOW 4.3 MEDIUM
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.
CVE-2016-2518 7 Debian, Freebsd, Netapp and 4 more 18 Debian Linux, Freebsd, Clustered Data Ontap and 15 more 2025-04-20 5.0 MEDIUM 5.3 MEDIUM
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.
CVE-2016-7429 1 Ntp 1 Ntp 2025-04-20 4.3 MEDIUM 3.7 LOW
NTP before 4.2.8p9 changes the peer structure to the interface it receives the response from a source, which allows remote attackers to cause a denial of service (prevent communication with a source) by sending a response for a source to an interface the source does not use.
CVE-2015-7978 1 Ntp 1 Ntp 2025-04-20 5.0 MEDIUM 7.5 HIGH
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.
CVE-2016-1551 2 Ntp, Ntpsec 2 Ntp, Ntpsec 2025-04-20 2.6 LOW 3.7 LOW
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, any packet with a source ip address of a reference clock (127.127.1.1 for example) that reaches the receive() function will match that reference clock's peer record and will be treated as a trusted peer. Any system that lacks the typical martian packet filtering which would block these packets is in danger of having its time controlled by an attacker.
CVE-2016-7426 4 Canonical, Hpe, Ntp and 1 more 9 Ubuntu Linux, Hpux-ntp, Ntp and 6 more 2025-04-20 4.3 MEDIUM 7.5 HIGH
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.
CVE-2016-1547 1 Ntp 1 Ntp 2025-04-20 5.0 MEDIUM 5.3 MEDIUM
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 peer. This is true even if authentication is enabled.
CVE-2017-6460 1 Ntp 1 Ntp 2025-04-20 6.5 MEDIUM 8.8 HIGH
Stack-based buffer overflow in the reslist function in ntpq in NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows remote servers have unspecified impact via a long flagstr variable in a restriction list response.
CVE-2016-9310 1 Ntp 1 Ntp 2025-04-20 6.4 MEDIUM 6.5 MEDIUM
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-2016-1550 1 Ntp 1 Ntp 2025-04-20 5.0 MEDIUM 5.3 MEDIUM
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-2015-7854 2 Netapp, Ntp 6 Clustered Data Ontap, Data Ontap, Oncommand Balance and 3 more 2025-04-20 6.5 MEDIUM 8.8 HIGH
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.
CVE-2015-3405 7 Debian, Fedoraproject, Ntp and 4 more 13 Debian Linux, Fedora, Ntp and 10 more 2025-04-20 5.0 MEDIUM 7.5 HIGH
ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the temp variable is between 0x20 and 0x7f and not #, which might allow remote attackers to obtain the value of generated MD5 keys via a brute force attack with the 93 possible keys.
CVE-2017-6459 1 Ntp 1 Ntp 2025-04-20 2.1 LOW 5.5 MEDIUM
The Windows installer for NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows local users to have unspecified impact via vectors related to an argument with multiple null bytes.
CVE-2017-6462 1 Ntp 1 Ntp 2025-04-20 4.6 MEDIUM 7.8 HIGH
Buffer overflow in the legacy Datum Programmable Time Server (DPTS) refclock driver in NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows local users to have unspecified impact via a crafted /dev/datum device.
CVE-2015-7703 5 Debian, Netapp, Ntp and 2 more 13 Debian Linux, Clustered Data Ontap, Data Ontap and 10 more 2025-04-20 4.3 MEDIUM 7.5 HIGH
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.
CVE-2015-7692 5 Debian, Netapp, Ntp and 2 more 13 Debian Linux, Clustered Data Ontap, Data Ontap and 10 more 2025-04-20 5.0 MEDIUM 7.5 HIGH
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.
CVE-2014-9294 1 Ntp 1 Ntp 2025-04-12 7.5 HIGH N/A
util/ntp-keygen.c in ntp-keygen in NTP before 4.2.7p230 uses a weak RNG seed, which makes it easier for remote attackers to defeat cryptographic protection mechanisms via a brute-force attack.
CVE-2016-4957 5 Novell, Ntp, Opensuse and 2 more 9 Suse Manager, Ntp, Leap and 6 more 2025-04-12 5.0 MEDIUM 7.5 HIGH
ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547.