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CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 0

16 Jan 2019 — To provide fine-grained controls over the ability to use Dynamic DNS (DDNS) to update records in a zone, BIND 9 provides a feature called update-policy. Various rules can be configured to limit the types of updates that can be performed by a client, depending on the key used when sending the update request. Unfortunately, some rule types were not initially documented, and when documentation for them was added to the Administrator Reference Manual (ARM) in change #3112, the language that was added to the ARM... • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html • CWE-284: Improper Access Control CWE-863: Incorrect Authorization •

CVSS: 7.5EPSS: 3%CPEs: 1EXPL: 0

16 Jan 2019 — An extension to hooks capabilities which debuted in Kea 1.4.0 introduced a memory leak for operators who are using certain hooks library facilities. In order to support multiple requests simultaneously, Kea 1.4 added a callout handle store but unfortunately the initial implementation of this store does not properly free memory in every case. Hooks which make use of query4 or query6 parameters in their callouts can leak memory, resulting in the eventual exhaustion of available memory and subsequent failure o... • https://kb.isc.org/docs/aa-01626 • CWE-772: Missing Release of Resource after Effective Lifetime •

CVSS: 7.5EPSS: 66%CPEs: 26EXPL: 1

28 Aug 2018 — "deny-answer-aliases" is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers. However, a defect in this feature makes it easy, when the feature is in use, to experience an assertion failure in name.c. Affects BIND 9.7.0->9.8.8, 9.9.0->9.9.13, 9.10.0->9.10.8, 9.11.0->9.11.4, 9.12.0->9.12.2, 9.13.0->9.13.2. "deny-answer-aliases" es una característica poco utilizada que ... • https://github.com/sischkg/cve-2018-5740 • CWE-617: Reachable Assertion •

CVSS: 7.5EPSS: 1%CPEs: 18EXPL: 0

13 Jun 2018 — Change #4777 (introduced in October 2017) introduced an unforeseen issue in releases which were issued after that date, affecting which clients are permitted to make recursive queries to a BIND nameserver. The intended (and documented) behavior is that if an operator has not specified a value for the "allow-recursion" setting, it SHOULD default to one of the following: none, if "recursion no;" is set in named.conf; a value inherited from the "allow-query-cache" or "allow-query" settings IF "recursion yes;" ... • http://www.securitytracker.com/id/1041115 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 7.5EPSS: 2%CPEs: 38EXPL: 0

01 Mar 2018 — Failure to properly bounds-check a buffer used for processing DHCP options allows a malicious server (or an entity masquerading as a server) to cause a buffer overflow (and resulting crash) in dhclient by sending a response containing a specially constructed options section. Affects ISC DHCP versions 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0 Un fallo al comprobar apropiadamente los límites de un búfer usado para procesar las opciones de DHCP, permite a un servidor malicioso (o a una entida... • https://kb.isc.org/docs/aa-01565 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 7.5EPSS: 33%CPEs: 55EXPL: 0

01 Mar 2018 — A malicious client which is allowed to send very large amounts of traffic (billions of packets) to a DHCP server can eventually overflow a 32-bit reference counter, potentially causing dhcpd to crash. Affects ISC DHCP 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0. Un cliente malicioso al que se le permite enviar grandes cantidades de tráfico (miles de millones de paquetes) a un servidor DHCP puede terminar desbordando un contador de referencia de 32 bits, provocando el cierre inesperado de dhc... • http://www.securityfocus.com/bid/103188 • CWE-190: Integer Overflow or Wraparound •

CVSS: 7.5EPSS: 8%CPEs: 51EXPL: 0

25 Jan 2018 — A vulnerability stemming from failure to properly clean up closed OMAPI connections can lead to exhaustion of the pool of socket descriptors available to the DHCP server. Affects ISC DHCP 4.1.0 to 4.1-ESV-R15, 4.2.0 to 4.2.8, 4.3.0 to 4.3.6. Older versions may also be affected but are well beyond their end-of-life (EOL). Releases prior to 4.1.0 have not been tested. Una vulnerabilidad derivada del error al limpiar correctamente las conexiones OMAPI cerradas puede conducir al agotamiento del grupo de descrip... • http://www.securityfocus.com/bid/102726 • CWE-400: Uncontrolled Resource Consumption CWE-772: Missing Release of Resource after Effective Lifetime •

CVSS: 7.5EPSS: 12%CPEs: 72EXPL: 0

16 Jan 2018 — BIND was improperly sequencing cleanup operations on upstream recursion fetch contexts, leading in some cases to a use-after-free error that can trigger an assertion failure and crash in named. Affects BIND 9.0.0 to 9.8.x, 9.9.0 to 9.9.11, 9.10.0 to 9.10.6, 9.11.0 to 9.11.2, 9.9.3-S1 to 9.9.11-S1, 9.10.5-S1 to 9.10.6-S1, 9.12.0a1 to 9.12.0rc1. BIND secuenciaba incorrectamente las operaciones de limpieza en contextos fetch de recursión ascendente, lo que conduce en algunos casos a un error de uso de memoria ... • http://www.securityfocus.com/bid/102716 • CWE-416: Use After Free •

CVSS: 5.3EPSS: 2%CPEs: 28EXPL: 0

30 Jun 2017 — An attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name may be able to circumvent TSIG authentication of AXFR requests via a carefully constructed request packet. A server that relies solely on TSIG keys for protection with no other ACL protection could be manipulated into: providing an AXFR of a zone to an unauthorized recipient or accepting bogus NOTIFY packets. Affects BIND 9.4.0->9.8.8, 9.9.0->9.9.10-P1, 9.10.0->9.10.5-P1, 9.11.0... • http://www.securityfocus.com/bid/99339 • CWE-20: Improper Input Validation CWE-287: Improper Authentication •

CVSS: 7.5EPSS: 28%CPEs: 28EXPL: 1

30 Jun 2017 — An attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name for the zone and service being targeted may be able to manipulate BIND into accepting an unauthorized dynamic update. Affects BIND 9.4.0->9.8.8, 9.9.0->9.9.10-P1, 9.10.0->9.10.5-P1, 9.11.0->9.11.1-P1, 9.9.3-S1->9.9.10-S2, 9.10.5-S1->9.10.5-S2. Un atacante que pueda enviar y recibir mensajes a un servidor DNS autoritativo y que conozca un nombre de clave TSIG válido para la zona ... • https://github.com/saaph/CVE-2017-3143 • CWE-287: Improper Authentication •