CVSS: 7.5EPSS: 0%CPEs: 6EXPL: 0CVE-2020-10995
https://notcve.org/view.php?id=CVE-2020-10995
PowerDNS Recursor from 4.1.0 up to and including 4.3.0 does not sufficiently defend against amplification attacks. An issue in the DNS protocol has been found that allow malicious parties to use recursive DNS services to attack third party authoritative name servers. The attack uses a crafted reply by an authoritative name server to amplify the resulting traffic between the recursive and other authoritative name servers. Both types of service can suffer degraded performance as an effect. This is triggered by random subdomains in the NSDNAME in NS records. • http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html http://www.nxnsattack.com https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-01.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF https://www.debian.org/security/2020/dsa-4691 • CWE-400: Uncontrolled Resource Consumption •
CVSS: 8.8EPSS: 0%CPEs: 1EXPL: 0CVE-2020-10030
https://notcve.org/view.php?id=CVE-2020-10030
An issue has been found in PowerDNS Recursor 4.1.0 up to and including 4.3.0. It allows an attacker (with enough privileges to change the system's hostname) to cause disclosure of uninitialized memory content via a stack-based out-of-bounds read. It only occurs on systems where gethostname() does not have '\0' termination of the returned string if the hostname is larger than the supplied buffer. (Linux systems are not affected because the buffer is always large enough. OpenBSD systems are not affected because the returned hostname always has '\0' termination.) • http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-03.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF • CWE-125: Out-of-bounds Read •
CVSS: 7.5EPSS: 0%CPEs: 6EXPL: 0CVE-2020-12244
https://notcve.org/view.php?id=CVE-2020-12244
An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation. Se detectó un problema en PowerDNS Recursor versiones 4.1.0 hasta 4.3.0, donde los registros en la sección de respuestas de una respuesta NXDOMAIN que carece de SOA no fueron comprobados apropiadamente en las función SyncRes::processAnswer, permitiendo a un atacante omitir la comprobación DNSSEC. • http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html http://www.openwall.com/lists/oss-security/2020/05/19/3 https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF https://www.debian.org/security/2020/dsa-4691 • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 0CVE-2019-3807
https://notcve.org/view.php?id=CVE-2019-3807
An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation. Se ha encontrado un problema en PowerDNS Recursor, en versiones 4.1.x anteriores a la 4.1.9, en el que los registros en la sección "answers" de las respuestas recibidas desde servidores autoritativos sin el flag AA no se validaban correctamente, lo que permite que un atacante omita la validación DNSSEC. • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3807 https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2019-02.html • CWE-295: Improper Certificate Validation CWE-345: Insufficient Verification of Data Authenticity •
CVSS: 8.1EPSS: 0%CPEs: 1EXPL: 0CVE-2019-3806
https://notcve.org/view.php?id=CVE-2019-3806
An issue has been found in PowerDNS Recursor versions after 4.1.3 before 4.1.9 where Lua hooks are not properly applied to queries received over TCP in some specific combination of settings, possibly bypassing security policies enforced using Lua. Se ha encontrado un problema en PowerDNS Recursor, desde la versión 4.1.3 hasta la 4.1.9, en el que los enlaces de Lua no se aplican correctamente a las consultas recibidas por TCP en alguna combinación específica de opciones, pudiendo omitir las políticas de seguridad aplicadas con Lua. • https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3806 https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2019-01.html • CWE-358: Improperly Implemented Security Check for Standard •