CVSS: 7.5EPSS: 1%CPEs: 1EXPL: 1CVE-2020-10957 – dovecot: malformed NOOP commands leads to DoS
https://notcve.org/view.php?id=CVE-2020-10957
In Dovecot before 2.3.10.1, unauthenticated sending of malformed parameters to a NOOP command causes a NULL Pointer Dereference and crash in submission-login, submission, or lmtp. En Dovecot versiones anteriores a 2.3.10.1, el envío no autenticado de parámetros malformados hacia un comando NOOP causa una Desreferencia del Puntero NULL y un bloqueo en submission-login o lmtp. A flaw was found in Dovecot, where it did not properly handle certain malformed NOOP commands. This flaw allows a malicious attacker to cause the submission, submission-login, or lmtp services to crash by sending specially crafted commands. Open-Xchange Dovecot versions 2.3.0 through 2.3.10 suffer from null pointer dereference and denial of service vulnerabilities. • http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00059.html http://packetstormsecurity.com/files/157771/Open-Xchange-Dovecot-2.3.10-Null-Pointer-Dereference-Denial-Of-Service.html http://seclists.org/fulldisclosure/2020/May/37 http://www.openwall.com/lists/oss-security/2020/05/18/1 https://dovecot.org/security https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TTZN2VW55ZC2AQBGBJMLRJSZIKSB2NS6 https://lists.fedoraproject.org/archives/list/package-announce&# • CWE-400: Uncontrolled Resource Consumption CWE-476: NULL Pointer Dereference •
CVSS: 5.3EPSS: 0%CPEs: 3EXPL: 0CVE-2019-19722
https://notcve.org/view.php?id=CVE-2019-19722
In Dovecot before 2.3.9.2, an attacker can crash a push-notification driver with a crafted email when push notifications are used, because of a NULL Pointer Dereference. The email must use a group address as either the sender or the recipient. En Dovecot versiones anteriores a 2.3.9.2, un atacante puede bloquear un controlador de notificación push con un correo electrónico diseñado cuando notificaciones push son usadas, debido a una desreferencia del puntero NULL. El correo electrónico debe usar una dirección de grupo como remitente o destinatario. • http://www.openwall.com/lists/oss-security/2019/12/13/3 https://dovecot.org/list/dovecot-news/2019-December/000428.html https://dovecot.org/pipermail/dovecot-news/2019-December/000428.html https://dovecot.org/security.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OZCJ3RBA4WIYGN7SOV4TW2AIHXPZATK https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6PPB7PG5BM3MC5ZF2KHQ3UR7CZIO42BB • CWE-476: NULL Pointer Dereference •
CVSS: 9.8EPSS: 52%CPEs: 5EXPL: 1CVE-2019-11500 – dovecot: improper NULL byte handling in IMAP and ManageSieve protocol parsers leads to out of bounds writes
https://notcve.org/view.php?id=CVE-2019-11500
In Dovecot before 2.2.36.4 and 2.3.x before 2.3.7.2 (and Pigeonhole before 0.5.7.2), protocol processing can fail for quoted strings. This occurs because '\0' characters are mishandled, and can lead to out-of-bounds writes and remote code execution. En Dovecot versiones anteriores a 2.2.36.4 y versiones 2.3.x anteriores a 2.3.7.2 (y Pigeonhole versiones anteriores a 0.5.7.2), el procesamiento del protocolo puede fallar para cadenas entre comillas. Esto ocurre porque los caracteres '\0' se manejan inapropiadamente y pueden generar escrituras fuera de límites y ejecución de código remota. A flaw was found in dovecot. • http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00024.html http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00026.html http://www.openwall.com/lists/oss-security/2019/08/28/3 https://access.redhat.com/errata/RHSA-2019:2822 https://access.redhat.com/errata/RHSA-2019:2836 https://access.redhat.com/errata/RHSA-2019:2885 https://dovecot.org/pipermail/dovecot-news/2019-August/000417.html https://lists.debian.org/debian-lts-announce/2019/08/msg00035.html • CWE-20: Improper Input Validation CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 0%CPEs: 2EXPL: 0CVE-2019-10691
https://notcve.org/view.php?id=CVE-2019-10691
The JSON encoder in Dovecot before 2.3.5.2 allows attackers to repeatedly crash the authentication service by attempting to authenticate with an invalid UTF-8 sequence as the username. El codificador JSON en Dovecot versiones anteriores a 2.3.5.2 permite a los atacantes bloquear repetidamente el servicio de autenticación al intentar autenticarse con una secuencia UTF-8 no válida como nombre de usuario. • http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00000.html http://www.openwall.com/lists/oss-security/2019/04/18/3 https://dovecot.org/list/dovecot-news/2019-April/000406.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS https://security.gentoo.org/glsa/201908-29 •
CVSS: 8.8EPSS: 0%CPEs: 10EXPL: 0CVE-2019-7524 – dovecot: Buffer overflow in indexer-worker process results in privilege escalation
https://notcve.org/view.php?id=CVE-2019-7524
In Dovecot before 2.2.36.3 and 2.3.x before 2.3.5.1, a local attacker can cause a buffer overflow in the indexer-worker process, which can be used to elevate to root. This occurs because of missing checks in the fts and pop3-uidl components. En Dovecot, en versiones anteriores a la 2.2.36.3 y en las 2.3.x anteriores a la 2.3.5.1, un atacante local puede provocar un desbordamiento de búfer en el proceso "indexer-worker", que se podría utilizar para elevar a root. Esto ocurre debido a la falta de comprobaciones en los componentes fts y pop3-uidl. • http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00060.html http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00067.html http://www.openwall.com/lists/oss-security/2019/03/28/1 http://www.securityfocus.com/bid/107672 https://dovecot.org/list/dovecot-news/2019-March/000403.html https://dovecot.org/security.html https://lists.debian.org/debian-lts-announce/2019/03/msg00038.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.o • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-284: Improper Access Control •