CVSS: 7.5EPSS: 4%CPEs: 3EXPL: 0CVE-2018-16853
https://notcve.org/view.php?id=CVE-2018-16853
Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command. Samba, desde la versión 4.7.0, tiene una vulnerabilidad que permite que un usuario en el dominio Samba AD provoque el cierre inesperado del KDC cuando Samba se incluye en la configuración de MIT Kerberos que no es la predeterminada. • http://www.securityfocus.com/bid/106026 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16853 https://security.gentoo.org/glsa/202003-52 https://security.netapp.com/advisory/ntap-20181127-0001 https://www.samba.org/samba/security/CVE-2018-16853.html • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.4EPSS: 0%CPEs: 1EXPL: 0CVE-2018-16857
https://notcve.org/view.php?id=CVE-2018-16857
Samba from version 4.9.0 and before version 4.9.3 that have AD DC configurations watching for bad passwords (to restrict brute forcing of passwords) in a window of more than 3 minutes may not watch for bad passwords at all. The primary risk from this issue is with regards to domains that have been upgraded from Samba 4.8 and earlier. In these cases the manual testing done to confirm an organisation's password policies apply as expected may not have been re-done after the upgrade. Samba, desde la versión 4.9.0 y antes de la versión 4.9.3, con las configuraciones AD DC buscando malas contraseñas (para restringir la adivinación de contraseñas por fuerza bruta) durante más de 3 minutos podría no buscar malas contraseñas en absoluto. El riesgo principal de este problema está relacionado con los dominios que se han actualizado desde Samba 4.8 y anteriores. • http://www.securityfocus.com/bid/106024 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16857 https://security.gentoo.org/glsa/202003-52 https://security.netapp.com/advisory/ntap-20181127-0001 https://www.samba.org/samba/security/CVE-2018-16857.html • CWE-358: Improperly Implemented Security Check for Standard •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2018-16852
https://notcve.org/view.php?id=CVE-2018-16852
Samba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference. During the processing of an DNS zone in the DNS management DCE/RPC server, the internal DNS server or the Samba DLZ plugin for BIND9, if the DSPROPERTY_ZONE_MASTER_SERVERS property or DSPROPERTY_ZONE_SCAVENGING_SERVERS property is set, the server will follow a NULL pointer and terminate. There is no further vulnerability associated with this issue, merely a denial of service. Samba, desde la versión 4.9.0 antes de la versión 4.9.3, es vulnerable a una desreferencia de puntero NULL. Durante el procesamiento de una zona DNS en el servidor DCE/RPC de gestión DNS, el servidor DNS interno del plugin Samba DLZ para BIND9, si las propiedades DSPROPERTY_ZONE_MASTER_SERVERS o DSPROPERTY_ZONE_SCAVENGING_SERVERS están establecidas, el servidor seguirá un puntero NULL y se terminará. • http://www.securityfocus.com/bid/106024 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16852 https://security.gentoo.org/glsa/202003-52 https://security.netapp.com/advisory/ntap-20181127-0001 https://www.samba.org/samba/security/CVE-2018-16852.html • CWE-476: NULL Pointer Dereference •
CVSS: 6.5EPSS: 1%CPEs: 9EXPL: 0CVE-2018-16841
https://notcve.org/view.php?id=CVE-2018-16841
Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process. Samba, desde la versión 4.3.0 antes de las versiones 4.7.12, 4.8.7 y 4.9.3, es vulnerable a una denegación de servicio (DoS). Cuando se configura para aceptar la autenticación por smartcard, el KDC de Samba llamará a talloc_free() dos veces en la misma memoria si la entidad de seguridad en un certificado firmado de forma válida no coincide con la entidad en AS-REQ. • http://www.securityfocus.com/bid/106023 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16841 https://security.gentoo.org/glsa/202003-52 https://security.netapp.com/advisory/ntap-20181127-0001 https://usn.ubuntu.com/3827-1 https://usn.ubuntu.com/3827-2 https://www.debian.org/security/2018/dsa-4345 https://www.samba.org/samba/security/CVE-2018-16841.html • CWE-415: Double Free CWE-416: Use After Free •
CVSS: 6.5EPSS: 0%CPEs: 10EXPL: 0CVE-2018-16851
https://notcve.org/view.php?id=CVE-2018-16851
Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service. Samba, desde la versión 4.0.0 antes de las versiones 4.7.12, 4.8.7 y 4.9.3, es vulnerable a una denegación de servicio (DoS). • http://www.securityfocus.com/bid/106027 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16851 https://lists.debian.org/debian-lts-announce/2018/12/msg00005.html https://security.gentoo.org/glsa/202003-52 https://security.netapp.com/advisory/ntap-20181127-0001 https://usn.ubuntu.com/3827-1 https://usn.ubuntu.com/3827-2 https://www.debian.org/security/2018/dsa-4345 https://www.samba.org/samba/security/CVE-2018-16851.html • CWE-476: NULL Pointer Dereference •