NULL pointer reference denial of service vulnerability in ntpd

Network Time Protocol NTP is a protocol used to synchronize a computer's time to its server or clock source e.g., quartz clock, GPS, etc.. Synchronizing a computer's clock to UTC ensures that data interactions in a network can proceed smoothly.NTPD Network Time Protocol daemon is an operating...

NTP DoS Exploit Released — Update Your Servers to Patch 10 Flaws

A proof-of-concept PoC exploit for a critical vulnerability in the Network Time Protocol daemon ntpd has been publically released that could allow anyone to crash a server with just a single maliciously crafted packet. The vulnerability has been patched by the Network Time Foundation with the...

ntpd zero origin timestamp bypass vulnerability

Network Time Protocol NTP is a protocol used to synchronize a computer's time to its server or clock source e.g., quartz clock, GPS, etc.. Synchronizing a computer's clock to UTC ensures that data interactions in a network can proceed smoothly.NTPD Network Time Protocol daemon is an operating...

Network Time Protocol Trap Crash Denial of Service Vulnerability

Summary An exploitable denial of service vulnerability exists in the trap functionality of ntpd. If an ntpd instance is configured to send traps, a specially crafted network packet can be used to cause a null pointer dereference resulting in a denial of service. This vulnerability can be triggere...

Denial of service vulnerability in ntpd

Network Time Protocol NTP is a protocol used to synchronize a computer's time to its server or clock source e.g., quartz clock, GPS, etc.. Synchronizing a computer's clock to UTC ensures that data interactions in a network can proceed smoothly.NTPD Network Time Protocol daemon is an operating...

ntp -- multiple vulnerabilities

Network Time Foundation reports: NTF's NTP Project is releasing ntp-4.2.8p9, which addresses: 1 HIGH severity vulnerability that only affects Windows 2 MEDIUM severity vulnerabilities 2 MEDIUM/LOW severity vulnerabilities 5 LOW severity vulnerabilities 28 other non-security fixes and improvements...

RedHat Update for ntp RHSA-2016:2583-02

The remote host is missing an update for the SPDX-FileCopyrightText: 2016 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

RHEL 7 : ntp (RHSA-2016:2583)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2016:2583 advisory. The Network Time Protocol NTP is used to synchronize a computer's time with another referenced time source. These packages include the ntpd...

ntp: restriction list NULL pointer dereference

A NULL pointer dereference flaw was found in the way ntpd processed 'ntpdc reslist' commands that queried restriction lists with a large amount of entries. A remote attacker could potentially use this flaw to crash ntpd...

Moderate: Red Hat Security Advisory: ntp security and bug fix update

An update for ntp is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CV...

ntp: missing key check allows impersonation between authenticated peers (VU#357792)

A flaw was found in the way NTP verified trusted keys during symmetric key authentication. An authenticated client A could use this flaw to modify a packet sent between a server B and a client C using a key that is different from the one known to the client A...

ntp: incomplete checks in ntp_crypto.c

It was found that the fix for CVE-2014-9750 was incomplete: three issues were found in the value length checks in NTP's ntpcrypto.c, where a packet with particular autokey operations that contained malicious data was not always being completely validated. A remote attacker could use a specially...

ntp: crash with crafted logconfig configuration command

It was found that ntpd could crash due to an uninitialized variable when processing malformed logconfig configuration commands...

ntp: slow memory leak in CRYPTO_ASSOC

A memory leak flaw was found in ntpd's CRYPTOASSOC. If ntpd was configured to use autokey authentication, an attacker could send packets to ntpd that would, after several days of ongoing attack, cause it to run out of memory...

ntp: stack exhaustion in recursive traversal of restriction list

A stack-based buffer overflow flaw was found in the way ntpd processed 'ntpdc reslist' commands that queried restriction lists with a large amount of entries. A remote attacker could use this flaw to crash ntpd...

ntp: incomplete checks in ntp_crypto.c

It was found that the fix for CVE-2014-9750 was incomplete: three issues were found in the value length checks in NTP's ntpcrypto.c, where a packet with particular autokey operations that contained malicious data was not always being completely validated. A remote attacker could use a specially...

ntp: infinite loop in sntp processing crafted packet

It was discovered that the sntp utility could become unresponsive due to being caught in an infinite loop when processing a crafted NTP packet...

ntp: config command can be used to set the pidfile and drift file paths

It was found that NTP's :config command could be used to set the pidfile and driftfile paths without any restrictions. A remote attacker could use this flaw to overwrite a file on the file system with a file containing the pid of the ntpd process immediately or the current estimated drift of the...

ntp: potential infinite loop in ntpq

A flaw was found in the way the ntpq client processed certain incoming packets in a loop in the getresponse function. A remote attacker could potentially use this flaw to crash an ntpq client instance...

ntp: off-path denial of service on authenticated broadcast mode

It was found that when NTP was configured in broadcast mode, a remote attacker could broadcast packets with bad authentication to all clients. The clients, upon receiving the malformed packets, would break the association with the broadcast server, causing them to become out of sync over a longer...