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: 7.5EPSS: 97%CPEs: 31EXPL: 2CVE-2020-8617 – A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c
https://notcve.org/view.php?id=CVE-2020-8617
Using a specially-crafted message, an attacker may potentially cause a BIND server to reach an inconsistent state if the attacker knows (or successfully guesses) the name of a TSIG key used by the server. Since BIND, by default, configures a local session key even on servers whose configuration does not otherwise make use of it, almost all current BIND servers are vulnerable. In releases of BIND dating from March 2018 and after, an assertion check in tsig.c detects this inconsistent state and deliberately exits. Prior to the introduction of the check the server would continue operating in an inconsistent state, with potentially harmful results. Al usar un mensaje especialmente diseñado, un atacante puede causar que un servidor BIND alcance un estado inconsistente si el atacante conoce (o adivina con éxito) el nombre de una clave TSIG utilizada por el servidor. • https://www.exploit-db.com/exploits/48521 https://github.com/knqyf263/CVE-2020-8617 http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html http://packetstormsecurity.com/files/157836/BIND-TSIG-Denial-Of-Service.html http://www.openwall.com/lists/oss-security/2020/05/19/4 https://kb.isc.org/docs/cve-2020-8617 https://lists.debian.org/debian-lts-announce/2020/05/msg00031.html https:/ • CWE-617: Reachable Assertion •
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: 7.5EPSS: 1%CPEs: 10EXPL: 0CVE-2020-12662 – unbound: amplification of an incoming query into a large number of queries directed to a target
https://notcve.org/view.php?id=CVE-2020-12662
Unbound before 1.10.1 has Insufficient Control of Network Message Volume, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in NS records. Unbound versiones anteriores a 1.10.1, presenta un Control Insuficiente del Volumen de Mensajes de Red, también se conoce como un problema de "NXNSAttack". Esto es activado por subdominios aleatorios en NSDNAME en registros NS. A network amplification vulnerability was found in Unbound, in the way it processes delegation messages from one authoritative zone to another. • http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html http://www.nxnsattack.com http://www.openwall.com/lists/oss-security/2020/05/19/5 https://lists.debian.org/debian-lts-announce/2021/02/msg00017.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F5NFROI2OMCZLYRTCNGHGO3TUD32LCIQ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/ • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.5EPSS: 1%CPEs: 10EXPL: 0CVE-2020-12663 – unbound: infinite loop via malformed DNS answers received from upstream servers
https://notcve.org/view.php?id=CVE-2020-12663
Unbound before 1.10.1 has an infinite loop via malformed DNS answers received from upstream servers. Unbound versiones anteriores a 1.10.1, presenta un bucle infinito mediante respuestas DNS malformadas recibidas desde servidores aguas arriba. A flaw was found in unbound in versions prior to 1.10.1. An infinite loop can be created when malformed DNS answers are received from upstream servers. The highest threat from this vulnerability is to system availability. • http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html http://www.openwall.com/lists/oss-security/2020/05/19/5 https://lists.debian.org/debian-lts-announce/2021/02/msg00017.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F5NFROI2OMCZLYRTCNGHGO3TUD32LCIQ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YJ42N2HBZ3DXMSEC56SWIIOFQGOS5M7I h • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •