
CVE-2019-6475 – A flaw in mirror zone validity checking can allow zone data to be spoofed
https://notcve.org/view.php?id=CVE-2019-6475
17 Oct 2019 — Mirror zones are a BIND feature allowing recursive servers to pre-cache zone data provided by other servers. A mirror zone is similar to a zone of type secondary, except that its data is subject to DNSSEC validation before being used in answers, as if it had been looked up via traditional recursion, and when mirror zone data cannot be validated, BIND falls back to using traditional recursion instead of the mirror zone. However, an error in the validity checks for the incoming zone data can allow an on-path ... • https://kb.isc.org/docs/cve-2019-6475 • CWE-345: Insufficient Verification of Data Authenticity •

CVE-2019-6467 – An error in the nxdomain redirect feature can cause BIND to exit with an INSIST assertion failure in query.c
https://notcve.org/view.php?id=CVE-2019-6467
09 Oct 2019 — A programming error in the nxdomain-redirect feature can cause an assertion failure in query.c if the alternate namespace used by nxdomain-redirect is a descendant of a zone that is served locally. The most likely scenario where this might occur is if the server, in addition to performing NXDOMAIN redirection for recursive clients, is also serving a local copy of the root zone or using mirroring to provide the root zone, although other configurations are also possible. Versions affected: BIND 9.12.0-> 9.12.... • https://github.com/knqyf263/CVE-2019-6467 • CWE-617: Reachable Assertion •

CVE-2019-6471 – A race condition when discarding malformed packets can cause BIND to exit with an assertion failure
https://notcve.org/view.php?id=CVE-2019-6471
20 Jun 2019 — 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 B... • https://kb.isc.org/docs/cve-2019-6471 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-617: Reachable Assertion •

CVE-2018-5743 – Limiting simultaneous TCP clients was ineffective
https://notcve.org/view.php?id=CVE-2018-5743
25 Apr 2019 — 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.... • https://kb.isc.org/docs/cve-2018-5743 • CWE-770: Allocation of Resources Without Limits or Throttling •

CVE-2018-5744 – A specially crafted packet can cause named to leak memory
https://notcve.org/view.php?id=CVE-2018-5744
22 Feb 2019 — A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Se puede presentar un fallo al liberar memoria cuando se procesan mensajes que tienen una combinación específica de opciones EDNS. Las versiones afectadas son: BIND ... • https://kb.isc.org/docs/cve-2018-5744 • CWE-772: Missing Release of Resource after Effective Lifetime •

CVE-2018-5745 – An assertion failure can occur if a trust anchor rolls over to an unsupported key algorithm when using managed-keys
https://notcve.org/view.php?id=CVE-2018-5745
22 Feb 2019 — "managed-keys" is a feature which allows a BIND resolver to automatically maintain the keys used by trust anchors which operators configure for use in DNSSEC validation. Due to an error in the managed-keys feature it is possible for a BIND server which uses managed-keys to exit due to an assertion failure if, during key rollover, a trust anchor's keys are replaced with keys which use an unsupported algorithm. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions ... • https://access.redhat.com/errata/RHSA-2019:3552 • CWE-327: Use of a Broken or Risky Cryptographic Algorithm CWE-617: Reachable Assertion •

CVE-2019-6465 – Zone transfer controls for writable DLZ zones were not effective
https://notcve.org/view.php?id=CVE-2019-6465
22 Feb 2019 — Controls for zone transfers may not be properly applied to Dynamically Loadable Zones (DLZs) if the zones are writable Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P2, 9.12.0 -> 9.12.3-P2, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2019-6465. Los controles para las transferencias de zona pueden no ser aplicados ... • https://access.redhat.com/errata/RHSA-2019:3552 • CWE-284: Improper Access Control CWE-732: Incorrect Permission Assignment for Critical Resource •

CVE-2018-5736
https://notcve.org/view.php?id=CVE-2018-5736
16 Jan 2019 — An error in zone database reference counting can lead to an assertion failure if a server which is running an affected version of BIND attempts several transfers of a slave zone in quick succession. This defect could be deliberately exercised by an attacker who is permitted to cause a vulnerable server to initiate zone transfers (for example: by sending valid NOTIFY messages), causing the named process to exit after failing the assertion test. Affects BIND 9.12.0 and 9.12.1. Un error en el conteo de la base... • http://www.securityfocus.com/bid/104386 • CWE-617: Reachable Assertion •

CVE-2018-5737 – BIND 9.12's serve-stale implementation can cause an assertion failure in rbtdb.c or other undesirable behavior, even if serve-stale is not enabled.
https://notcve.org/view.php?id=CVE-2018-5737
16 Jan 2019 — A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c, even when stale-answer-enable is off. Additionally, problematic interaction between the serve-stale feature and NSEC aggressive negative caching can in some cases cause undesirable behavior from named, such as a recursion loop or excessive logging. Deliberate exploitation of this condition could cause operational problems depending on the particular manifestation -- either degradation o... • http://www.securityfocus.com/bid/104236 • CWE-617: Reachable Assertion •

CVE-2018-5741 – Update policies krb5-subdomain and ms-subdomain do not enforce controls promised in their documentation
https://notcve.org/view.php?id=CVE-2018-5741
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 •