K02951273: NTP vulnerability CVE-2017-6463

Security Advisory Description NTP before 4.2.8p10 and 4.3.x before 4.3.94 allows remote authenticated users to cause a denial of service daemon crash via an invalid setting in a :config directive, related to the unpeer option. CVE-2017-6463 Impact A remote, authenticated attacker may exploit this...

K16393: NTP vulnerability CVE-2014-9751

Security Advisory Description Some kernels do not offer protection for ::1 source addresses on IPv6 interfaces. Since NTP's access control mechanism is based on source address and localhost addresses generally have no restrictions, an attacker may be able to send malicious control and configurati...

K00329831: NTP vulnerabilities CVE-2015-8139 and CVE-2015-8140

Security Advisory Description CVE-2015-8139 ntpq in NTP before 4.2.8p7 allows remote attackers to obtain origin timestamps and then impersonate peers via unspecified vectors. CVE-2015-8140 The ntpq protocol in NTP before 4.2.8p7 allows remote attackers to conduct replay attacks by sniffing the...

K71245322: NTP vulnerability CVE-2015-8138

Security Advisory Description NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero. CVE-2015-8138 Impact An attacker may be able to disable time synchronization with the server or push...

K16505: NTP vulnerability CVE-2015-1798

Security Advisory Description The symmetric-key feature in the receive function in ntpproto.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...

K23453330: NTP vulnerability CVE-2016-4957

Security Advisory Description 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. CVE-2016-4957 Impact There is no impact; F5 products are not affected ...

K17566: NTP vulnerability CVE-2015-7704

Security Advisory Description 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. CVE-2015-7704 Impact An off-path attacker can send a crafted Kiss of Death KoD packet to the client, which...

K10600056: NTP vulnerability CVE-2015-5300

Security Advisory Description It was found that ntpd did not correctly implement the threshold limitation for the '-g' option, which is used to set the time without any restrictions. CVE-2015-5300 Impact A man-in-the-middle attacker able to intercept network time protocol NTP traffic between a...

K9889: NTP vulnerability CVE-2009-0021

Security Advisory Description Note : Versions that are not listed in this article have not been evaluated for vulnerability to this security advisory. For information about the F5 security policy regarding evaluating older and unsupported versions of F5 products, refer to K4602: Overview of the F...

K15935: NTP vulnerability CVE-2014-9294

Security Advisory Description 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-2014-9294 Impact Theoretically, a remote attacker can determine a weak...

K01324833: NTP vulnerability CVE-2015-8158

Security Advisory Description The getresponse function in ntpq in NTP versions before 4.2.8p9 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service infinite loop via crafted packets with incorrect values. CVE-2015-8158 Impact When this vulnerability is exploited, an attacke...

K16392: NTP vulnerability CVE-2014-9750

Security Advisory Description The vallen packet value is not validated in several code paths in ntpcrypto.c which can lead to information leakage or a possible crash of ntpd. CVE-2014-9750 Note : The original candidate number referenced in this article, CVE-2014-9297, was rejected because it was...

K65271605: NTP vulnerability CVE-2016-1549

Security Advisory Description 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...

K63675293: NTP vulnerability CVE-2016-1548

Security Advisory Description 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 wi...

K80996302: Multiple NTP vulnerabilities

Security Advisory Description CVE-2016-7427 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-2016-7428 ntpd in NTP before 4.2.8p9 allows remo...

K17524: NTP vulnerability CVE-2015-7854

Security Advisory Description 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-2015-7854 Impact...

K17254: NTP-keygen vulnerability CVE-2015-3405

Security Advisory Description flaw was found in the way the ntp-keygen utility generated MD5 symmetric keys on big-endian systems. An attacker could possibly use this flaw to guess generated MD5 keys, which could then be used to spoof an NTP client or server. CVE-2015-3405 - pending Impact There...

K61200338: NTP vulnerability CVE-2016-2517

Security Advisory Description NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service prevent subsequent authentication by leveraging knowledge of the controlkey or requestkey and sending a crafted packet to ntpd, which changes the value of trustedkey,...

K07082049: NTP vulnerability CVE-2017-6462

Security Advisory Description 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-2017-6462 Impact This vulnerability allows local users ...

K55405388: NTP vulnerability CVE-2016-9311

Security Advisory Description 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. CVE-2016-9311 Impact A remote attacker may be able to send a specially crafted packet to cause ...