CVSS: 7.5EPSS: 5%CPEs: 21EXPL: 1CVE-2023-50387 – bind9: KeyTrap - Extreme CPU consumption in DNSSEC validator
https://notcve.org/view.php?id=CVE-2023-50387
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records. Ciertos aspectos DNSSEC del protocolo DNS (en RFC 4035 y RFC relacionados) permiten a atacantes remotos provocar una denegación de servicio (consumo de CPU) a través de una o más respuestas DNSSEC cuando hay una zona con muchos registros DNSKEY y RRSIG, también conocido como "KeyTrap". " asunto. La especificación del protocolo implica que un algoritmo debe evaluar todas las combinaciones de registros DNSKEY y RRSIG. Processing specially crafted responses coming from DNSSEC-signed zones can lead to uncontrolled CPU usage, leading to a Denial of Service in the DNSSEC-validating resolver side. This vulnerability applies only for systems where DNSSEC validation is enabled. • https://github.com/knqyf263/CVE-2023-50387 http://www.openwall.com/lists/oss-security/2024/02/16/2 http://www.openwall.com/lists/oss-security/2024/02/16/3 https://access.redhat.com/security/cve/CVE-2023-50387 https://bugzilla.suse.com/show_bug.cgi?id=1219823 https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 https://kb.isc.org/docs/cve-2023-50387 https://lists&# • CWE-400: Uncontrolled Resource Consumption CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2023-6516 – Specific recursive query patterns may lead to an out-of-memory condition
https://notcve.org/view.php?id=CVE-2023-6516
To keep its cache database efficient, `named` running as a recursive resolver occasionally attempts to clean up the database. It uses several methods, including some that are asynchronous: a small chunk of memory pointing to the cache element that can be cleaned up is first allocated and then queued for later processing. It was discovered that if the resolver is continuously processing query patterns triggering this type of cache-database maintenance, `named` may not be able to handle the cleanup events in a timely manner. This in turn enables the list of queued cleanup events to grow infinitely large over time, allowing the configured `max-cache-size` limit to be significantly exceeded. This issue affects BIND 9 versions 9.16.0 through 9.16.45 and 9.16.8-S1 through 9.16.45-S1. Para mantener eficiente su base de datos de caché, `named` que se ejecuta como un solucionador recursivo intenta ocasionalmente limpiar la base de datos. • http://www.openwall.com/lists/oss-security/2024/02/13/1 https://kb.isc.org/docs/cve-2023-6516 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R https://security.netapp.com/advisory/ntap-20240503-0008 https://access.redhat.com/security/cve/CVE-2023-6516 https://bugzilla.redhat.com/show_bug.cgi?id=2263911 • CWE-400: Uncontrolled Resource Consumption CWE-789: Memory Allocation with Excessive Size Value •
CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0CVE-2023-5679 – Enabling both DNS64 and serve-stale may cause an assertion failure during recursive resolution
https://notcve.org/view.php?id=CVE-2023-5679
A bad interaction between DNS64 and serve-stale may cause `named` to crash with an assertion failure during recursive resolution, when both of these features are enabled. This issue affects BIND 9 versions 9.16.12 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.16.12-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1. Una mala interacción entre DNS64 y el servidor obsoleto puede causar que "named" falle con una falla de aserción durante la resolución recursiva, cuando ambas funciones están habilitadas. Este problema afecta a las versiones de BIND 9, 9.16.12 a 9.16.45, 9.18.0 a 9.18.21, 9.19.0 a 9.19.19, 9.16.12-S1 a 9.16.45-S1 y 9.18.11-S1 a 9.18. .21-S1. A flaw was found in the bind package. This issue may allow an attacker to query in a DNS64 enabled resolver node with a domain name triggering a server-stale data, triggering a code assertion, and resulting in a crash of `named` processes. • http://www.openwall.com/lists/oss-security/2024/02/13/1 https://kb.isc.org/docs/cve-2023-5679 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ https://lists.fedoraproject.org/archives/list/package-announce@lists. • CWE-617: Reachable Assertion •
CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0CVE-2023-5517 – Querying RFC 1918 reverse zones may cause an assertion failure when "nxdomain-redirect" is enabled
https://notcve.org/view.php?id=CVE-2023-5517
A flaw in query-handling code can cause `named` to exit prematurely with an assertion failure when: - `nxdomain-redirect <domain>;` is configured, and - the resolver receives a PTR query for an RFC 1918 address that would normally result in an authoritative NXDOMAIN response. This issue affects BIND 9 versions 9.12.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1. Una falla en el código de manejo de consultas puede causar que `named` se cierre prematuramente con un error de aserción cuando: - `nxdomain-redirect ;` está configurado, y - el solucionador recibe una consulta PTR para una dirección RFC 1918 que normalmente dar como resultado una respuesta NXDOMAIN autorizada. Este problema afecta a las versiones de BIND 9, 9.12.0 a 9.16.45, 9.18.0 a 9.18.21, 9.19.0 a 9.19.19, 9.16.8-S1 a 9.16.45-S1 y 9.18.11-S1 a 9.18. .21-S1. A flaw was found in the bind package which may result in a Denial of Service in `named` process. This is a result of a reachable assertion, leading `named` to prematurely terminate when both conditions are met: nxdomain-redirect for the queried domain is configured and the resolver receives a PTR query, used for a reverse DNS lookup, for a RFC 1918 address that would normally result in an authoritative `NXDOMAIN` response. • http://www.openwall.com/lists/oss-security/2024/02/13/1 https://kb.isc.org/docs/cve-2023-5517 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ https://lists.fedoraproject.org/archives/list/package-announce@lists. • CWE-617: Reachable Assertion •
CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0CVE-2023-4408 – Parsing large DNS messages may cause excessive CPU load
https://notcve.org/view.php?id=CVE-2023-4408
The DNS message parsing code in `named` includes a section whose computational complexity is overly high. It does not cause problems for typical DNS traffic, but crafted queries and responses may cause excessive CPU load on the affected `named` instance by exploiting this flaw. This issue affects both authoritative servers and recursive resolvers. This issue affects BIND 9 versions 9.0.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1. El código de análisis de mensajes DNS en "named" incluye una sección cuya complejidad computacional es demasiado alta. No causa problemas para el tráfico DNS típico, pero las consultas y respuestas manipuladas pueden causar una carga excesiva de la CPU en la instancia "nombrada" afectada al explotar esta falla. • http://www.openwall.com/lists/oss-security/2024/02/13/1 https://kb.isc.org/docs/cve-2023-4408 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ https://lists.fedoraproject.org/archives/list/package-announce@lists. • CWE-400: Uncontrolled Resource Consumption •