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CVSS: 5.9EPSS: 0%CPEs: 109EXPL: 0

A race condition which may occur when discarding malformed packets can result in BIND exiting due to a REQUIRE assertion failure in dispatch.c. Versions affected: BIND 9.11.0 -> 9.11.7, 9.12.0 -> 9.12.4-P1, 9.14.0 -> 9.14.2. Also all releases of the BIND 9.13 development branch and version 9.15.0 of the BIND 9.15 development branch and BIND Supported Preview Edition versions 9.11.3-S1 -> 9.11.7-S1. Una condición de carrera que puede presentarse al descartar paquetes malformados puede provocar la salida de BIND debido a un fallo de aserción de REQUIRE en el archivo dispatch.c. Versiones afectadas: BIND 9.11.0 hasta 9.11.7, 9.12.0 hasta 9.12.4-P1, 9.14.0 hasta 9.14.2. • https://kb.isc.org/docs/cve-2019-6471 https://support.f5.com/csp/article/K10092301?utm_source=f5support&amp%3Butm_medium=RSS https://access.redhat.com/security/cve/CVE-2019-6471 https://bugzilla.redhat.com/show_bug.cgi?id=1721780 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-617: Reachable Assertion •

CVSS: 8.6EPSS: 0%CPEs: 78EXPL: 0

By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.6, 9.12.0 -> 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -> 9.11.5-S3, and 9.11.5-S5. • https://kb.isc.org/docs/cve-2018-5743 https://support.f5.com/csp/article/K74009656?utm_source=f5support&amp%3Butm_medium=RSS https://www.synology.com/security/advisory/Synology_SA_19_20 https://access.redhat.com/security/cve/CVE-2018-5743 https://bugzilla.redhat.com/show_bug.cgi?id=1702541 • CWE-770: Allocation of Resources Without Limits or Throttling •