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CVE-2009-0159

ntp: buffer overflow in ntpq

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.

CVSS 2.0 · 6.8 Medium EPSS 13.2% KEV · Not listed
Vendors
Ntp Redhat
Products
Ntp Enterprise Linux Rhel Eus
CVE-2009-0021

ntp incorrectly checks for malformed signatures

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.

CVSS 2.0 · 5.0 Medium EPSS 3.2% KEV · Not listed
Vendors
Ntp Redhat
Products
Ntp Enterprise Linux
CVE-2009-3563

ntpd: DoS with mode 7 packets (VU#568372)

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.

CVSS 2.0 · 6.4 Medium EPSS 32.1% KEV · Not listed
Vendors
Ntp Redhat
Products
Ntp Enterprise Linux
CVE-2009-1252

ntp: remote arbitrary code execution vulnerability if autokeys is enabled

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.

CVSS 2.0 · 6.8 Medium EPSS 21.3% KEV · Not listed
Vendors
Ntp Redhat
Products
Ntp Enterprise Linux Rhel Eus
CVE-2004-0657

ntp: wrong date/time offset return could lead to integer overflow

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.

CVSS 3.1 · 7.1 High EPSS 2.9% KEV · Not listed
Vendors
Hp Ntp
Products
Tru64 Unix Ntp
CVE-2015-7848

ntp: multiple integer overflow read access violations

An integer overflow can occur in NTP-dev.4.3.70 leading to an out-of-bounds memory copy operation when processing a specially crafted private mode packet. The crafted packet needs to have the correct message authentication code and a valid timestamp. When processed by the NTP daemon, it leads to an immediate crash.

CVSS 3.1 · 7.5 High EPSS 6.1% KEV · Not listed
Vendors
Netapp Ntp
Products
Clustered Data Ontap Data Ontap Operating In 7-mode Oncommand Balance and 3 more
CVE-2020-13817

ntp: ntpd using highly predictable transmit timestamps could result in time change or DoS

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.

CVSS 3.1 · 7.4 High EPSS 3.4% KEV · Not listed
Vendors
Fujitsu Netapp Ntp and 2 more
Products
M10-1 M10-1 Firmware M10-4 and 38 more
CVE-2020-11868

ntp: DoS on client ntpd using server mode packet

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.

CVSS 3.1 · 7.5 High EPSS 2.1% KEV · Not listed
Vendors
Debian Netapp Ntp and 2 more
Products
Debian Linux All Flash Fabric-attached Storage 8300 All Flash Fabric-attached Storage 8300 Firmware and 21 more
CVE-2015-7705

ntp: denial of service by trigerring rate limiting on NTP server

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.

CVSS 3.1 · 9.8 Critical EPSS 12.2% KEV · Not listed
Vendors
Citrix Netapp Ntp and 1 more
Products
Xenserver Clustered Data Ontap Data Ontap and 7 more
CVE-2015-5300

ntp: MITM attacker can force ntpd to make a step larger than the panic threshold

The panic_gate check in NTP before 4.2.8p5 is only re-enabled after the first change to the system clock that was greater than 128 milliseconds by default, which allows remote attackers to set NTP to an arbitrary time when started with the -g option, or to alter the time by up to 900 seconds otherwise by responding to an unspecified number of requests from trusted sources, and leveraging a resulting denial of service (abort and restart).

CVSS 3.0 · 7.5 High EPSS 9.1% KEV · Not listed
Vendors
Canonical Debian Fedoraproject and 4 more
Products
Ubuntu Linux Debian Linux Fedora and 18 more
CVE-2015-7703

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

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.

CVSS 3.1 · 7.5 High EPSS 3.8% KEV · Not listed
Vendors
Debian Netapp Ntp and 2 more
Products
Debian Linux Clustered Data Ontap Data Ontap and 11 more
CVE-2015-7692

ntp: incomplete checks in ntp_crypto.c

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.

CVSS 3.1 · 7.5 High EPSS 6.5% KEV · Not listed
Vendors
Debian Netapp Ntp and 2 more
Products
Debian Linux Clustered Data Ontap Data Ontap and 11 more
CVE-2015-5219

ntp: infinite loop in sntp processing crafted packet

The ULOGTOD function in ntp.d in SNTP before 4.2.7p366 does not properly perform type conversions from a precision value to a double, which allows remote attackers to cause a denial of service (infinite loop) via a crafted NTP packet.

CVSS 3.1 · 7.5 High EPSS 6.1% KEV · Not listed
Vendors
Canonical Debian Fedoraproject and 7 more
Products
Ubuntu Linux Debian Linux Fedora and 18 more
CVE-2015-7701

ntp: slow memory leak in CRYPTO_ASSOC

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).

CVSS 3.1 · 7.5 High EPSS 6.5% KEV · Not listed
Vendors
Debian Netapp Ntp and 2 more
Products
Debian Linux Clustered Data Ontap Data Ontap and 11 more
CVE-2015-5195

ntp: ntpd crash when processing config commands with statistics type

ntp_openssl.m4 in ntpd in NTP before 4.2.7p112 allows remote attackers to cause a denial of service (segmentation fault) via a crafted statistics or filegen configuration command that is not enabled during compilation.

CVSS 3.0 · 7.5 High EPSS 8.8% KEV · Not listed
Vendors
Canonical Debian Fedoraproject and 2 more
Products
Ubuntu Linux Debian Linux Fedora and 6 more
CVE-2015-5194

ntp: crash with crafted logconfig configuration command

The log_config_command function in ntp_parser.y in ntpd in NTP before 4.2.7p42 allows remote attackers to cause a denial of service (ntpd crash) via crafted logconfig commands.

CVSS 3.0 · 7.5 High EPSS 6.5% KEV · Not listed
Vendors
Canonical Debian Fedoraproject and 3 more
Products
Ubuntu Linux Debian Linux Fedora and 11 more
CVE-2015-5146

ntp: ntpd control message crash on crafted NUL-byte in configuration directive (VU#668167)

ntpd in ntp before 4.2.8p3 with remote configuration enabled allows remote authenticated users with knowledge of the configuration password and access to a computer entrusted to perform remote configuration to cause a denial of service (service crash) via a NULL byte in a crafted configuration directive packet.

CVSS 3.0 · 5.3 Medium EPSS 4.9% KEV · Not listed
Vendors
Debian Fedoraproject Ntp
Products
Debian Linux Fedora Ntp
CVE-2015-3405

ntp: ntp-keygen may generate non-random symmetric keys on big-endian systems

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.

CVSS 3.0 · 7.5 High EPSS 5.3% KEV · Not listed
Vendors
Debian Fedoraproject Ntp and 4 more
Products
Debian Linux Fedora Ntp and 11 more
CVE-2015-7691

ntp: incomplete checks in ntp_crypto.c

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) via crafted packets containing particular autokey operations. NOTE: This vulnerability exists due to an incomplete fix for CVE-2014-9750.

CVSS 3.1 · 7.5 High EPSS 7.1% KEV · Not listed
Vendors
Debian Netapp Ntp and 2 more
Products
Debian Linux Clustered Data Ontap Data Ontap and 11 more