CVSS: 7.7EPSS: 0%CPEs: 29EXPL: 1CVE-2015-7974 – ntp: missing key check allows impersonation between authenticated peers (VU#357792)
https://notcve.org/view.php?id=CVE-2015-7974
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." NTP 4.x en versiones anteriores a 4.2.8p6 y 4.3.x en versiones anteriores a 4.3.90 no verifica las asociaciones del par de las claves simétricas cuando autentica paquetes, lo que podría permitir a atacante remotos llevar a cabo ataques de suplantación de identidad a través de una clave de confianza arbitraria, también conocida como "skeleton key". 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). • http://bugs.ntp.org/show_bug.cgi?id=2936 http://rhn.redhat.com/errata/RHSA-2016-2583.html http://support.ntp.org/bin/view/Main/NtpBug2936 http://www.debian.org/security/2016/dsa-3629 http://www.securityfocus.com/bid/81960 http://www.securitytracker.com/id/1034782 http://www.talosintel.com/reports/TALOS-2016-0071 https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750e • CWE-287: Improper Authentication CWE-304: Missing Critical Step in Authentication •
CVSS: 6.4EPSS: 0%CPEs: 90EXPL: 0CVE-2015-8138 – ntp: missing check for zero originate timestamp
https://notcve.org/view.php?id=CVE-2015-8138
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. NTP en versiones anteriores a 4.2.8p6 y 4.3.x en versiones anteriores a 4.3.90 permite a atacantes remotos eludir la validación de marca horaria de origen a través de un paquete con una marca horaria de origen puesta a cero. It was discovered that ntpd as a client did not correctly check the originate timestamp in received packets. A remote attacker could use this flaw to send a crafted packet to an ntpd client that would effectively disable synchronization with the server, or push arbitrary offset/delay measurements to modify the time on the client. • http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177507.html http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176434.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html http://lists.opensuse.org/opensuse-security-announce&# • CWE-20: Improper Input Validation CWE-294: Authentication Bypass by Capture-replay •
CVSS: 7.5EPSS: 5%CPEs: 25EXPL: 0CVE-2015-5194 – ntp: crash with crafted logconfig configuration command
https://notcve.org/view.php?id=CVE-2015-5194
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. La función log_config_command en el archivo ntp_parser.y en ntpd en NTP anterior a versión 4.2.7p42, permite a los atacantes remotos causar una denegación de servicio (bloqueo de ntpd) por medio de comandos logconfig creados. It was found that ntpd could crash due to an uninitialized variable when processing malformed logconfig configuration commands. • http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=4c4fc141LwvcoGp-lLGhkAFp3ZvtrA http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169167.html http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html http://rhn.redhat.com/errata/RHSA-2016-0780. • CWE-20: Improper Input Validation CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 3%CPEs: 18EXPL: 1CVE-2015-5195 – ntp: ntpd crash when processing config commands with statistics type
https://notcve.org/view.php?id=CVE-2015-5195
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. ntp_openssl.m4 en ntpd en NTP anterior a 4.2.7p112, permite a los atacantes remotos causar una denegación de servicio (fallo de segmentación) por medio de un comando de configuración statistics o filegen creadas que no está habilitado durante la compilación. It was found that ntpd would exit with a segmentation fault when a statistics type that was not enabled during compilation (e.g. timingstats) was referenced by the statistics or filegen configuration command. • https://github.com/theglife214/CVE-2015-5195 http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169167.html http://lists.fedoraproject.org/pipermail/package-announce/2015-September/166992.html http://rhn.redhat.com/errata/RHSA-2016-0780.html http://rhn.redhat.com/errata/RHSA-2016-2583.html http://www.debian.org/security/2015/dsa-3388 http://www.openwall.com/lists/oss-security/2015/08/25& • CWE-20: Improper Input Validation CWE-476: NULL Pointer Dereference •
CVSS: 7.5EPSS: 1%CPEs: 33EXPL: 0CVE-2015-5219 – ntp: infinite loop in sntp processing crafted packet
https://notcve.org/view.php?id=CVE-2015-5219
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. La función ULOGTOD en el archivo ntp.d en SNTP en versiones anteriores a la 4.2.7p366 no realiza apropiadamente las conversiones de tipo de un valor de precisión a uno doble, lo que permite a los atacantes remotos causar una denegación de servicio (bucle infinito) por medio de un paquete NTP creado. It was discovered that the sntp utility could become unresponsive due to being caught in an infinite loop when processing a crafted NTP packet. • http://aix.software.ibm.com/aix/efixes/security/ntp_advisory4.asc http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=51786731Gr4-NOrTBC_a_uXO4wuGhg http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169167.html http://lists.fedoraproject.org/pipermail/package-announce/2015-September/166992.html http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html http://lists.opensuse.org/opensuse-updates&#x • CWE-704: Incorrect Type Conversion or Cast CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •