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Vulnerabilidades / CVE-2026-82717

crítica

CVE-2026-82717

unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis

Publicada Modificada CWE 122
En la Trivy database desde, como mínimo, el 24 oct 2026, 07:11 UTCNo consta cuándo entró antes de ese build.

Severidad por fuente

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

La etiqueta propia de Trivy es CRITICAL. Crítica según NVD, AlmaLinux, Oracle, Rocky Linux. Más baja según Red Hat (alta), Amazon (alta), Azure Linux (alta), Ubuntu (media).

Descripción

In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The vulnerability starts when CNAME synthesis during an upstream response needs to enforce(rewrite) a max TTL value in the packet buffer. Coupled with a compression pointer that points to the overwritten value and invalidates the domain name, it leads to an error path that does not properly move the buffer position and allows for the heap buffer overflow. Since this is heavily reliant on heap memory layout, results are memory corruption that eventually leads to a crash and under specific systems and compilation options remote code execution.

Paquetes afectados y versiones corregidas

FuentePaqueteCorregido en
alma 10python3-unbound, unbound, unbound-anchor y 4 más1.24.2-7.el10_2.6
alma 8python3-unbound, unbound, unbound-devel y 1 más1.16.2-5.14.el8_10.4
alma 9python3-unbound, unbound, unbound-devel y 2 más1.24.2-3.el9_8.8
Oracle Linux 8python3-unbound, unbound, unbound-devel y 1 más1.16.2-5.14.el8_10.4
Oracle Linux 9python3-unbound, unbound, unbound-devel y 2 más1.24.2-3.el9_8.8
rocky 10python3-unbound, unbound, unbound-anchor y 3 más1.24.2-7.el10_2.6
rocky 8python3-unbound, unbound, unbound-devel y 1 más1.16.2-5.14.el8_10.4
rocky 9python3-unbound, unbound, unbound-dracut y 1 más1.24.2-3.el9_8.8
alpine 3.22unbound1.25.2-r0
alpine 3.23unbound1.25.2-r0
alpine 3.24unbound1.25.2-r2
alpine edgeunbound1.26.1-r0
Mostrar las 147 entradas de 45 fuentes
FuentePaqueteCorregido en
alma 10python3-unbound1.24.2-7.el10_2.6
alma 10unbound1.24.2-7.el10_2.6
alma 10unbound-anchor1.24.2-7.el10_2.6
alma 10unbound-devel1.24.2-7.el10_2.6
alma 10unbound-dracut1.24.2-7.el10_2.6
alma 10unbound-libs1.24.2-7.el10_2.6
alma 10unbound-utils1.24.2-7.el10_2.6
alma 8python3-unbound1.16.2-5.14.el8_10.4
alma 8unbound1.16.2-5.14.el8_10.4
alma 8unbound-devel1.16.2-5.14.el8_10.4
alma 8unbound-libs1.16.2-5.14.el8_10.4
alma 9python3-unbound1.24.2-3.el9_8.8
alma 9unbound1.24.2-3.el9_8.8
alma 9unbound-devel1.24.2-3.el9_8.8
alma 9unbound-dracut1.24.2-3.el9_8.8
alma 9unbound-libs1.24.2-3.el9_8.8
Oracle Linux 8python3-unbound1.16.2-5.14.el8_10.4
Oracle Linux 8unbound1.16.2-5.14.el8_10.4
Oracle Linux 8unbound-devel1.16.2-5.14.el8_10.4
Oracle Linux 8unbound-libs1.16.2-5.14.el8_10.4
Oracle Linux 9python3-unbound1.24.2-3.el9_8.8
Oracle Linux 9unbound1.24.2-3.el9_8.8
Oracle Linux 9unbound-devel1.24.2-3.el9_8.8
Oracle Linux 9unbound-dracut1.24.2-3.el9_8.8
Oracle Linux 9unbound-libs1.24.2-3.el9_8.8
rocky 10python3-unbound1.24.2-7.el10_2.6
rocky 10unbound1.24.2-7.el10_2.6
rocky 10unbound-anchor1.24.2-7.el10_2.6
rocky 10unbound-dracut1.24.2-7.el10_2.6
rocky 10unbound-libs1.24.2-7.el10_2.6
rocky 10unbound-utils1.24.2-7.el10_2.6
rocky 8python3-unbound1.16.2-5.14.el8_10.4
rocky 8unbound1.16.2-5.14.el8_10.4
rocky 8unbound-devel1.16.2-5.14.el8_10.4
rocky 8unbound-libs1.16.2-5.14.el8_10.4
rocky 9python3-unbound1.24.2-3.el9_8.8
rocky 9unbound1.24.2-3.el9_8.8
rocky 9unbound-dracut1.24.2-3.el9_8.8
rocky 9unbound-libs1.24.2-3.el9_8.8
alpine 3.22unbound1.25.2-r0
alpine 3.23unbound1.25.2-r0
alpine 3.24unbound1.25.2-r2
alpine edgeunbound1.26.1-r0
amazon linux 2python2-unbound1.7.3-15.amzn2.0.17
amazon linux 2python3-unbound1.7.3-15.amzn2.0.17
amazon linux 2unbound1.7.3-15.amzn2.0.17
amazon linux 2unbound-debuginfo1.7.3-15.amzn2.0.17
amazon linux 2unbound-devel1.7.3-15.amzn2.0.17
amazon linux 2unbound-libs1.7.3-15.amzn2.0.17
amazon linux 2023python3-unbound1.17.1-1.amzn2023.0.15
amazon linux 2023python3-unbound-debuginfo1.17.1-1.amzn2023.0.15
amazon linux 2023unbound1.17.1-1.amzn2023.0.15
amazon linux 2023unbound-anchor1.17.1-1.amzn2023.0.15
amazon linux 2023unbound-anchor-debuginfo1.17.1-1.amzn2023.0.15
amazon linux 2023unbound-debuginfo1.17.1-1.amzn2023.0.15
amazon linux 2023unbound-debugsource1.17.1-1.amzn2023.0.15
amazon linux 2023unbound-devel1.17.1-1.amzn2023.0.15
amazon linux 2023unbound-libs1.17.1-1.amzn2023.0.15
amazon linux 2023unbound-libs-debuginfo1.17.1-1.amzn2023.0.15
amazon linux 2023unbound-utils1.17.1-1.amzn2023.0.15
amazon linux 2023unbound-utils-debuginfo1.17.1-1.amzn2023.0.15
Azure Linux 3.0unbound0:1.26.1-1.azl3
debian 11unboundsin corrección indicada
debian 12unboundsin corrección indicada
debian 13unbound1.26.1-0+deb13u1
debian 14unbound1.26.1-1
echounbound1.26.1
rapidfort alma 10python3-unbound1.24.2-7.el10_2.6
rapidfort alma 10unbound0:1.24.2-7.el10_2.6
rapidfort alma 10unbound-anchor0:1.24.2-7.el10_2.6
rapidfort alma 10unbound-devel1.24.2-7.el10_2.6
rapidfort alma 10unbound-dracut1.24.2-7.el10_2.6
rapidfort alma 10unbound-libs0:1.24.2-7.el10_2.6
rapidfort alma 10unbound-utils1.24.2-7.el10_2.6
rapidfort alma 9python3-unbound1.24.2-3.el9_8.8
rapidfort alma 9unbound0:1.24.2-3.el9_8.8
rapidfort alma 9unbound-dracut1.24.2-3.el9_8.8
rapidfort alma 9unbound-libs0:1.24.2-3.el9_8.8
rapidfort alpine 3.20unbound1.25.2-r0
rapidfort alpine 3.21unbound1.25.2-r0
rapidfort alpine 3.22unbound1.25.2-r0
rapidfort alpine 3.23unbound1.25.2-r0
rapidfort alpine 3.24unbound1.25.2-r2
rapidfort amazon linux 2023python3-unbound1.17.1-1.amzn2023.0.15
rapidfort amazon linux 2023unbound0:1.17.1-1.amzn2023.0.15
rapidfort amazon linux 2023unbound-anchor0:1.17.1-1.amzn2023.0.15
rapidfort amazon linux 2023unbound-devel1.17.1-1.amzn2023.0.15
rapidfort amazon linux 2023unbound-libs0:1.17.1-1.amzn2023.0.15
rapidfort amazon linux 2023unbound-utils1.17.1-1.amzn2023.0.15
rapidfort debian 12rf-unbound0:1.26.1-0+deb13u1, 0:1.26.1-1
rapidfort debian 12unbound0:1.26.1-0+deb13u1, 0:1.26.1-1
rapidfort debian 13rf-unbound0:1.26.1-0+deb13u1, 0:1.26.1-1
rapidfort debian 13unbound0:1.26.1-0+deb13u1, 0:1.26.1-1
rapidfort fedora 41rf-unbound0:1.24.1-2.fc41
rapidfort fedora 41rf-unbound-anchor0:1.24.1-2.fc41
rapidfort fedora 41rf-unbound-libs0:1.24.1-2.fc41
rapidfort fedora 41unbound0:1.24.1-2.fc41
rapidfort fedora 41unbound-anchor0:1.24.1-2.fc41
rapidfort fedora 41unbound-libs0:1.24.1-2.fc41
rapidfort fedora 43python3-unbound1.26.1-1.fc43
rapidfort fedora 43rf-unbound0:1.26.1-1.fc43
rapidfort fedora 43rf-unbound-anchor0:1.26.1-1.fc43
rapidfort fedora 43rf-unbound-libs0:1.26.1-1.fc43
rapidfort fedora 43unbound0:1.26.1-1.fc43
rapidfort fedora 43unbound-anchor0:1.26.1-1.fc43
rapidfort fedora 43unbound-devel1.26.1-1.fc43
rapidfort fedora 43unbound-dracut1.26.1-1.fc43
rapidfort fedora 43unbound-libs0:1.26.1-1.fc43
rapidfort fedora 43unbound-munin1.26.1-1.fc43
rapidfort fedora 43unbound-utils1.26.1-1.fc43
rapidfort Oracle Linux 10python3-unbound0:1.24.2-7.el10_2.6
rapidfort Oracle Linux 10unbound0:1.24.2-7.el10_2.6
rapidfort Oracle Linux 10unbound-anchor0:1.24.2-7.el10_2.6
rapidfort Oracle Linux 10unbound-devel0:1.24.2-7.el10_2.6
rapidfort Oracle Linux 10unbound-dracut0:1.24.2-7.el10_2.6
rapidfort Oracle Linux 10unbound-libs0:1.24.2-7.el10_2.6
rapidfort Oracle Linux 10unbound-utils0:1.24.2-7.el10_2.6
rapidfort Oracle Linux 9python3-unbound0:1.24.2-3.el9_8.8
rapidfort Oracle Linux 9unbound0:1.24.2-3.el9_8.8
rapidfort Oracle Linux 9unbound-devel0:1.24.2-3.el9_8.8
rapidfort Oracle Linux 9unbound-dracut0:1.24.2-3.el9_8.8
rapidfort Oracle Linux 9unbound-libs0:1.24.2-3.el9_8.8
rapidfort rocky 9python3-unbound0:1.24.2-3.el9_8.8
rapidfort rocky 9rf-unbound0:1.24.2-3.el9_8.8
rapidfort rocky 9rf-unbound-libs0:1.24.2-3.el9_8.8
rapidfort rocky 9unbound0:1.24.2-3.el9_8.8
rapidfort rocky 9unbound-dracut0:1.24.2-3.el9_8.8
rapidfort rocky 9unbound-libs0:1.24.2-3.el9_8.8
rapidfort ubuntu 20.04rf-unbound0:1.13.1-1ubuntu5.16, 0:1.19.2-1ubuntu3.10, 0:1.24.2-1ubuntu2.3
rapidfort ubuntu 20.04unbound0:1.13.1-1ubuntu5.16, 0:1.19.2-1ubuntu3.10, 0:1.24.2-1ubuntu2.3
rapidfort ubuntu 22.04rf-unbound0:1.13.1-1ubuntu5.16, 0:1.19.2-1ubuntu3.10, 0:1.24.2-1ubuntu2.3
rapidfort ubuntu 22.04unbound0:1.13.1-1ubuntu5.16, 0:1.19.2-1ubuntu3.10, 0:1.24.2-1ubuntu2.3
rapidfort ubuntu 24.04rf-unbound0:1.13.1-1ubuntu5.16, 0:1.19.2-1ubuntu3.10, 0:1.24.2-1ubuntu2.3
rapidfort ubuntu 24.04unbound0:1.13.1-1ubuntu5.16, 0:1.19.2-1ubuntu3.10, 0:1.24.2-1ubuntu2.3
Red Hatopenshift/ose-rhel-coreos-8sin corrección indicada
Red Hatopenshift/ose-rhel-coreos-9sin corrección indicada
Red Hatunboundsin corrección indicada
Red Hatunbound-develsin corrección indicada
Red Hatunbound-libssin corrección indicada
Red Hatunbound-pythonsin corrección indicada
seal Red Hat 8seal-unbound1.16.2-5.8.el8_10+sp999
seal Red Hat 8unbound1.16.2-5.8.el8_10+sp999
ubuntu 18.04-ESMunbound1.6.7-1ubuntu2.6+esm5
ubuntu 20.04-ESMunbound1.9.4-2ubuntu1.11+esm2
ubuntu 22.04unbound1.13.1-1ubuntu5.16
ubuntu 24.04unbound1.19.2-1ubuntu3.10
ubuntu 26.04unbound1.24.2-1ubuntu2.3

Referencias

Las 21 referencias

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.