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

Unbound before 1.9.5 allows an infinite loop via a compressed name in dname_pkt_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited ** EN DISPUTA ** Unbound versiones anteriores a 1.9.5, permite un bucle infinito por medio de un nombre comprimido en la función dname_pkt_copy. NOTA: El proveedor niega que esto sea una vulnerabilidad. Aunque el código puede ser vulnerable, una instalación de Unbound en funcionamiento no puede ser explotada de forma remota o local. • https://lists.debian.org/debian-lts-announce/2021/05/msg00007.html https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results https://security.netapp.com/advisory/ntap-20210507-0007 https://access.redhat.com/security/cve/CVE-2019-25040 https://bugzilla.redhat.com/show_bug.cgi?id=1954799 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •

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

Unbound before 1.9.5 allows an assertion failure via a compressed name in dname_pkt_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited ** EN DISPUTA ** Unbound versiones anteriores a 1.9.5, permite un fallo de aserción por medio de un nombre comprimido en la función dname_pkt_copy. NOTA: El proveedor niega que esto sea una vulnerabilidad. Aunque el código puede ser vulnerable, una instalación de Unbound en funcionamiento no puede ser explotada de forma remota o local. • https://lists.debian.org/debian-lts-announce/2021/05/msg00007.html https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results https://security.netapp.com/advisory/ntap-20210507-0007 https://access.redhat.com/security/cve/CVE-2019-25041 https://bugzilla.redhat.com/show_bug.cgi?id=1954801 • CWE-617: Reachable Assertion •

CVSS: 9.8EPSS: 0%CPEs: 2EXPL: 0

Unbound before 1.9.5 allows an out-of-bounds write via a compressed name in rdata_copy. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited ** EN DISPUTA ** Unbound versiones anteriores a 1.9.5 permite una escritura fuera de límites por medio de un nombre comprimido en la función rdata_copy. NOTA: El proveedor niega que esto sea una vulnerabilidad. Aunque el código puede ser vulnerable, una instalación de Unbound en funcionamiento no puede ser explotada de forma remota o local A flaw was found in unbound. • https://lists.debian.org/debian-lts-announce/2021/05/msg00007.html https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results https://security.netapp.com/advisory/ntap-20210507-0007 https://access.redhat.com/security/cve/CVE-2019-25042 https://bugzilla.redhat.com/show_bug.cgi?id=1954804 • CWE-787: Out-of-bounds Write •

CVSS: 5.5EPSS: 0%CPEs: 3EXPL: 0

NLnet Labs Unbound, up to and including version 1.12.0, and NLnet Labs NSD, up to and including version 4.3.3, contain a local vulnerability that would allow for a local symlink attack. When writing the PID file, Unbound and NSD create the file if it is not there, or open an existing file for writing. In case the file was already present, they would follow symlinks if the file happened to be a symlink instead of a regular file. An additional chown of the file would then take place after it was written, making the user Unbound/NSD is supposed to run as the new owner of the file. If an attacker has local access to the user Unbound/NSD runs as, she could create a symlink in place of the PID file pointing to a file that she would like to erase. • https://lists.debian.org/debian-lts-announce/2021/02/msg00017.html https://lists.debian.org/debian-lts-announce/2023/03/msg00024.html https://security.gentoo.org/glsa/202101-38 https://www.nlnetlabs.nl/downloads/nsd/CVE-2020-28935.txt https://www.nlnetlabs.nl/downloads/unbound/CVE-2020-28935.txt https://access.redhat.com/security/cve/CVE-2020-28935 https://bugzilla.redhat.com/show_bug.cgi?id=1878761 • CWE-59: Improper Link Resolution Before File Access ('Link Following') •

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

An incomplete fix for CVE-2020-12662 was shipped for Unbound in Red Hat Enterprise Linux 7, as part of erratum RHSA-2020:2414. Vulnerable versions of Unbound could still amplify an incoming query into a large number of queries directed to a target, even with a lower amplification ratio compared to versions of Unbound that shipped before the mentioned erratum. This issue is about the incomplete fix for CVE-2020-12662, and it does not affect upstream versions of Unbound. Una corrección incompleta fue entregada para CVE-2020-12662 para Unbound en Red Hat Enterprise Linux versión 7, como parte de la errata de RHSA-2020: 2414. Las versiones vulnerables de Unbound aún podrían amplificar una consulta entrante en una gran cantidad de consultas dirigidas a un objetivo, inclusive con un índice de amplificación más bajo en comparación con las versiones de Unbound que se enviaron antes de la errata mencionada. • https://bugzilla.redhat.com/show_bug.cgi?id=1846026 https://access.redhat.com/security/cve/CVE-2020-10772 • CWE-400: Uncontrolled Resource Consumption CWE-406: Insufficient Control of Network Message Volume (Network Amplification) •