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 •
CVSS: 7.7EPSS: 0%CPEs: 8EXPL: 1CVE-2019-3814 – dovecot: Improper certificate validation
https://notcve.org/view.php?id=CVE-2019-3814
It was discovered that Dovecot before versions 2.2.36.1 and 2.3.4.1 incorrectly handled client certificates. A remote attacker in possession of a valid certificate with an empty username field could possibly use this issue to impersonate other users. Se ha descubierto que Dovecot, en versiones anteriores a la 2.2.36.1 y 2.3.4.1, gestiona de manera incorrecta los certificados del cliente. Un atacante remoto en posesión de un certificado válido con un campo "username" vacío podría emplear este problema para suplantar a otros usuarios. It was discovered that Dovecot incorrectly handled client certificates. • http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00067.html https://access.redhat.com/errata/RHSA-2019:3467 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3814 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS https://security.gentoo.org/glsa/201904-19 https://www.dovecot.org/list/dovecot/2019-Feb • CWE-295: Improper Certificate Validation •
CVSS: 5.9EPSS: 0%CPEs: 6EXPL: 0CVE-2017-15130
https://notcve.org/view.php?id=CVE-2017-15130
A denial of service flaw was found in dovecot before 2.2.34. An attacker able to generate random SNI server names could exploit TLS SNI configuration lookups, leading to excessive memory usage and the process to restart. Se ha descubierto un error de denegación de servicio (DoS) en dovecot en versiones anteriores a la 2.2.34. Un atacante que pueda generar nombres aleatorios del servidor SNI podría explotar las búsquedas de configuración TLS SNI, lo que conduce a un uso excesivo de memoria y al reinicio del proceso. • http://seclists.org/oss-sec/2018/q1/205 https://bugzilla.redhat.com/show_bug.cgi?id=1532356 https://lists.debian.org/debian-lts-announce/2018/03/msg00036.html https://usn.ubuntu.com/3587-1 https://usn.ubuntu.com/3587-2 https://www.debian.org/security/2018/dsa-4130 https://www.dovecot.org/list/dovecot-news/2018-February/000370.html • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.1EPSS: 31%CPEs: 6EXPL: 0CVE-2017-14461
https://notcve.org/view.php?id=CVE-2017-14461
A specially crafted email delivered over SMTP and passed on to Dovecot by MTA can trigger an out of bounds read resulting in potential sensitive information disclosure and denial of service. In order to trigger this vulnerability, an attacker needs to send a specially crafted email message to the server. Un email especialmente manipulado enviado mediante SMTP y pasado a Dovecot, de MTA, puede desencadenar una lectura fuera de límites que resulta en la posible revelación de información sensible y una denegación de servicio (DoS). Para desencadenar esta vulnerabilidad, un atacantes necesita enviar un mensaje de email especialmente manipulado al servidor. • http://www.securityfocus.com/bid/103201 https://lists.debian.org/debian-lts-announce/2018/03/msg00036.html https://talosintelligence.com/vulnerability_reports/TALOS-2017-0510 https://usn.ubuntu.com/3587-1 https://usn.ubuntu.com/3587-2 https://www.debian.org/security/2018/dsa-4130 https://www.dovecot.org/list/dovecot-news/2018-February/000370.html • CWE-125: Out-of-bounds Read CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •