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# CVE ID CWE ID # of Exploits Vulnerability Type(s) Publish Date Update Date Score Gained Access Level Access Complexity Authentication Conf. Integ. Avail.
1 CVE-2016-9312 399 DoS 2017-01-13 2017-01-17
5.0
None Remote Low Not required None None Partial
ntpd in NTP before 4.2.8p9, when running on Windows, allows remote attackers to cause a denial of service via a large UDP packet.
2 CVE-2016-9311 476 DoS 2017-01-13 2017-01-17
7.1
None Remote Medium Not required None None Complete
ntpd in NTP before 4.2.8p9, when the trap service is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted packet.
3 CVE-2016-9310 400 2017-01-13 2017-01-17
6.4
None Remote Low Not required Partial None Partial
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.
4 CVE-2016-7434 20 DoS 2017-01-13 2017-01-17
5.0
None Remote Low Not required None None Partial
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.
5 CVE-2016-7433 682 2017-01-13 2017-01-17
5.0
None Remote Low Not required None None Partial
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."
6 CVE-2016-7431 20 Bypass 2017-01-13 2017-01-17
5.0
None Remote Low Not required None Partial None
NTP before 4.2.8p9 allows remote attackers to bypass the origin timestamp protection mechanism via an origin timestamp of zero. NOTE: this vulnerability exists because of a CVE-2015-8138 regression.
7 CVE-2016-7429 18 DoS 2017-01-13 2017-01-17
4.3
None Remote Medium Not required None None Partial
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.
8 CVE-2016-7428 400 DoS 2017-01-13 2017-01-17
3.3
None Local Network Low Not required None None Partial
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.
9 CVE-2016-7427 400 DoS 2017-01-13 2017-01-17
3.3
None Local Network Low Not required None None Partial
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.
10 CVE-2016-7426 399 DoS 2017-01-13 2017-01-17
4.3
None Remote Medium Not required None None Partial
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.
11 CVE-2016-4957 20 DoS 2016-07-04 2016-10-05
5.0
None Remote Low Not required None None Partial
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.
12 CVE-2016-4956 19 DoS 2016-07-04 2016-11-28
5.0
None Remote Low Not required None None Partial
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.
13 CVE-2016-4955 362 DoS 2016-07-04 2016-11-28
2.6
None Remote High Not required None None Partial
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.
14 CVE-2016-4954 362 DoS 2016-07-04 2016-10-03
4.3
None Remote Medium Not required None None Partial
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.
15 CVE-2016-4953 362 DoS 2016-07-04 2016-11-28
4.3
None Remote Medium Not required None None Partial
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.
16 CVE-2016-1550 200 +Info 2017-01-06 2017-01-10
5.0
None Remote Low Not required Partial None None
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.
17 CVE-2016-1549 19 2017-01-06 2017-01-10
4.0
None Remote Low Single system None Partial None
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.
18 CVE-2016-1548 19 2017-01-06 2017-01-10
6.4
None Remote Low Not required None Partial Partial
An attacker can spoof a packet from a legitimate ntpd server with an origin timestamp that matches the peer->dst timestamp recorded for that server. After making this switch, the client in NTP 4.2.8p4 and earlier and NTPSec aa48d001683e5b791a743ec9c575aaf7d867a2b0c will reject all future legitimate server responses. It is possible to force the victim client to move time after the mode has been changed. ntpq gives no indication that the mode has been switched.
19 CVE-2016-1547 20 2017-01-06 2017-01-10
5.0
None Remote Low Not required None None Partial
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.
20 CVE-2015-7974 254 2016-01-26 2016-11-28
2.1
None Remote High Single system None Partial None
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."
21 CVE-2015-1799 17 DoS 2015-04-08 2016-10-24
4.3
None Local Network Medium Not required None Partial Partial
The symmetric-key feature in the receive function in ntp_proto.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 (synchronization loss) by spoofing the source IP address of a peer.
22 CVE-2015-1798 17 2015-04-08 2016-10-24
1.8
None Local Network High Not required None Partial None
The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC.
23 CVE-2014-9751 17 2015-10-05 2016-11-28
6.8
None Remote Medium Not required Partial Partial Partial
The read_network_packet function in ntp_io.c in ntpd in NTP 4.x before 4.2.8p1 on Linux and OS X does not properly determine whether a source IP address is an IPv6 loopback address, which makes it easier for remote attackers to spoof restricted packets, and read or write to the runtime state, by leveraging the ability to reach the ntpd machine's network interface with a packet from the ::1 address.
24 CVE-2014-9750 20 DoS +Info 2015-10-05 2016-11-28
5.8
None Remote Medium Not required Partial None Partial
ntp_crypto.c in ntpd in NTP 4.x before 4.2.8p1, when Autokey Authentication is enabled, allows remote attackers to obtain sensitive information from process memory or cause a denial of service (daemon crash) via a packet containing an extension field with an invalid value for the length of its value field.
25 CVE-2014-9296 17 2014-12-19 2017-01-02
5.0
None Remote Low Not required None None Partial
The receive function in ntp_proto.c in ntpd in NTP before 4.2.8 continues to execute after detecting a certain authentication error, which might allow remote attackers to trigger an unintended association change via crafted packets.
26 CVE-2014-9295 119 Exec Code Overflow 2014-12-19 2017-01-02
7.5
None Remote Low Not required Partial Partial Partial
Multiple stack-based buffer overflows in ntpd in NTP before 4.2.8 allow remote attackers to execute arbitrary code via a crafted packet, related to (1) the crypto_recv function when the Autokey Authentication feature is used, (2) the ctl_putdata function, and (3) the configure function.
27 CVE-2014-9294 2014-12-19 2017-01-02
7.5
None Remote Low Not required Partial Partial Partial
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.
28 CVE-2014-9293 2014-12-19 2017-01-02
7.5
None Remote Low Not required Partial Partial Partial
The config_auth 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.
29 CVE-2013-5211 20 DoS 2014-01-02 2016-12-21
5.0
None Remote Low Not required None None Partial
The monlist feature in ntp_request.c in ntpd in NTP before 4.2.7p26 allows remote attackers to cause a denial of service (traffic amplification) via forged (1) REQ_MON_GETLIST or (2) REQ_MON_GETLIST_1 requests, as exploited in the wild in December 2013.
30 CVE-2009-3563 DoS 2009-12-09 2016-12-07
6.4
None Remote Low Not required None Partial Partial
ntp_request.c in ntpd in NTP before 4.2.4p8, and 4.2.5, allows remote attackers to cause a denial of service (CPU and bandwidth consumption) by using MODE_PRIVATE to send a spoofed (1) request or (2) response packet that triggers a continuous exchange of MODE_PRIVATE error responses between two NTP daemons.
31 CVE-2009-1252 119 Exec Code Overflow 2009-05-19 2010-08-21
6.8
None Remote Medium Not required Partial Partial Partial
Stack-based buffer overflow in the crypto_recv function in ntp_crypto.c in ntpd in NTP before 4.2.4p7 and 4.2.5 before 4.2.5p74, when OpenSSL and autokey are enabled, allows remote attackers to execute arbitrary code via a crafted packet containing an extension field.
32 CVE-2009-0159 119 Exec Code Overflow 2009-04-14 2013-12-04
6.8
User Remote Medium Not required Partial Partial Partial
Stack-based buffer overflow in the cookedprint function in ntpq/ntpq.c in ntpq in NTP before 4.2.4p7-RC2 allows remote NTP servers to execute arbitrary code via a crafted response.
33 CVE-2009-0021 287 Bypass 2009-01-07 2012-10-30
5.0
None Remote Low Not required Partial None None
NTP 4.2.4 before 4.2.4p5 and 4.2.5 before 4.2.5p150 does not properly check the return value from the OpenSSL EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys, a similar vulnerability to CVE-2008-5077.
34 CVE-2004-0657 Overflow 2004-08-06 2016-10-17
5.0
None Remote Low Not required None Partial None
Integer overflow in the NTP daemon (NTPd) before 4.0 causes the NTP server to return the wrong date/time offset when a client requests a date/time that is more than 34 years away from the server's time.
Total number of vulnerabilities : 34   Page : 1 (This Page)
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