CVSS: 6.5EPSS: 0%CPEs: 3EXPL: 0CVE-2020-15136 – Improper authentication in etcd
https://notcve.org/view.php?id=CVE-2020-15136
In ectd before versions 3.4.10 and 3.3.23, gateway TLS authentication is only applied to endpoints detected in DNS SRV records. When starting a gateway, TLS authentication will only be attempted on endpoints identified in DNS SRV records for a given domain, which occurs in the discoverEndpoints function. No authentication is performed against endpoints provided in the --endpoints flag. This has been fixed in versions 3.4.10 and 3.3.23 with improved documentation and deprecation of the functionality. En ectd anterior a las versiones 3.4.10 y 3.3.23, la autenticación TLS de la puerta de enlace solo se aplica a los endpoints detectados en los registros SRV de DNS. • https://github.com/etcd-io/etcd/blob/master/Documentation/op-guide/gateway.md https://github.com/etcd-io/etcd/security/advisories/GHSA-wr2v-9rpq-c35q https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP https://access.redhat.com/security/cve/CVE-2020-15136 https://bugzilla.redhat.com/show_bug.cgi?id=1868880 • CWE-287: Improper Authentication CWE-306: Missing Authentication for Critical Function •
CVSS: 7.7EPSS: 0%CPEs: 3EXPL: 0CVE-2020-15114 – Denial of Service in etcd
https://notcve.org/view.php?id=CVE-2020-15114
In etcd before versions 3.3.23 and 3.4.10, the etcd gateway is a simple TCP proxy to allow for basic service discovery and access. However, it is possible to include the gateway address as an endpoint. This results in a denial of service, since the endpoint can become stuck in a loop of requesting itself until there are no more available file descriptors to accept connections on the gateway. En etcd anteriores a las versiones 3.3.23 y 3.4.10, la puerta de enlace etcd es un proxy TCP simple para permitir el acceso y detección de servicios básicos. Sin embargo, es posible incluir la dirección de la puerta de enlace como endpoint. • https://github.com/etcd-io/etcd/security/advisories/GHSA-2xhq-gv6c-p224 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP https://access.redhat.com/security/cve/CVE-2020-15114 https://bugzilla.redhat.com/show_bug.cgi?id=1868874 • CWE-400: Uncontrolled Resource Consumption CWE-772: Missing Release of Resource after Effective Lifetime •
CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0CVE-2020-15115 – No minimum password length in etcd
https://notcve.org/view.php?id=CVE-2020-15115
etcd before versions 3.3.23 and 3.4.10 does not perform any password length validation, which allows for very short passwords, such as those with a length of one. This may allow an attacker to guess or brute-force users' passwords with little computational effort. etcd anterior a las versiones 3.3.23 y 3.4.10, no lleva a cabo ninguna comprobación de longitud de contraseña, lo que permite contraseñas muy cortas, como aquellas con una longitud de uno. Esto puede permitir a un atacante adivinar o forzar las contraseñas de los usuarios con poco esfuerzo computacional A flaw was found in etcd, where it does not perform any password length validation, which allows for very short passwords, such as those with a length of one. This flaw allows an attacker to guess or brute-force users' passwords with little computational effort. The highest threat from this vulnerability is to confidentiality. • https://github.com/etcd-io/etcd/security/advisories/GHSA-4993-m7g5-r9hh https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP https://access.redhat.com/security/cve/CVE-2020-15115 https://bugzilla.redhat.com/show_bug.cgi?id=1868878 • CWE-305: Authentication Bypass by Primary Weakness CWE-521: Weak Password Requirements •
CVSS: 8.1EPSS: 1%CPEs: 6EXPL: 0CVE-2018-16886 – etcd: Improper Authentication in auth/store.go:AuthInfoFromTLS() via gRPC-gateway
https://notcve.org/view.php?id=CVE-2018-16886
etcd versions 3.2.x before 3.2.26 and 3.3.x before 3.3.11 are vulnerable to an improper authentication issue when role-based access control (RBAC) is used and client-cert-auth is enabled. If an etcd client server TLS certificate contains a Common Name (CN) which matches a valid RBAC username, a remote attacker may authenticate as that user with any valid (trusted) client certificate in a REST API request to the gRPC-gateway. etcd, en sus versiones 3.2.x anteriores a la 3.2.26 y versiones 3.3.x anteriores a la 3.3.11, es vulnerable a una autorización incorrecta cuando se emplea un control de acceso basado en roles (RBAC) y client-cert-auth se encuentra habilitado. Si un certificado TLS del servidor etcd del cliente contiene un "Common Name" (CN) que coincide con un nombre de usuario RBAC válido, un atacante remoto podría autenticarse como dicho usuario con cualquier certificado (confiable) del cliente en una petición REST API en gRPC-gateway. Etcd, versions 3.2.0 through 3.2.25 and 3.3.0 through 3.3.10, are vulnerable to an improper authentication issue when role-based access control (RBAC) is used and client-cert-auth is enabled. If an etcd client server's TLS certificate contains a Common Name (CN) which matches a valid RBAC username, a remote attacker may authenticate as that user with any valid (trusted) client certificate in a REST API request to the gRPC-gateway. • http://www.securityfocus.com/bid/106540 https://access.redhat.com/errata/RHSA-2019:0237 https://access.redhat.com/errata/RHSA-2019:1352 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16886 https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.2.md#security-authentication https://github.com/etcd-io/etcd/blob/1eee465a43720d713bb69f7b7f5e120135fdb1ac/CHANGELOG-3.3.md#security-authentication https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/ • CWE-287: Improper Authentication •
CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 1CVE-2018-1099
https://notcve.org/view.php?id=CVE-2018-1099
DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the browser into sending requests to localhost (or any other address). Se ha encontrado una vulnerabilidad de revinculación de DNS en etcd, en versiones 3.3.1 y anteriores. Un atacante puede controlar sus registros de DNS para dirigirse a locahost y engañar al navegador para que envíe peticiones a localhost (o a cualquier otra dirección). • https://bugzilla.redhat.com/show_bug.cgi?id=1552717 https://github.com/coreos/etcd/issues/9353 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JX7QTIT465BQGRGNCE74RATRQLKT2QE4 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPGYHMSKDPW5GAMI7BEP3XQRVRLLBJKS • CWE-20: Improper Input Validation •