CVE-2026-62299
Gravedad CVSS v3.1:
MEDIA
Tipo:
CWE-476
Desreferencia a puntero nulo (NULL)
Fecha de publicación:
16/07/2026
Última modificación:
22/07/2026
Descripción
*** Pendiente de traducción *** CoreDNS is a DNS server written in Go. Prior to 1.14.5, the CoreDNS rewrite plugin supports edns0 rewrite rules with an optional revert flag, and two response rules, edns0SetResponseRule and edns0ReplaceResponseRule[T] in plugin/rewrite/edns0.go, call res.IsEdns0() and immediately dereference the returned *dns.OPT without a nil check when a downstream plugin returns a response with no OPT record. A remote, unauthenticated client can send a single ordinary DNS query matching a rewrite edns0 ... revert rule, causing ResponseReverter in plugin/rewrite/reverter.go to panic, return SERVFAIL, and degrade availability, or crash the CoreDNS process if the debug directive disables recovery. This issue is fixed in version 1.14.5.
Impacto
Puntuación base 3.x
5.30
Gravedad 3.x
MEDIA
Productos y versiones vulnerables
| CPE | Desde | Hasta |
|---|---|---|
| cpe:2.3:a:coredns.io:coredns:*:*:*:*:*:*:*:* | 1.14.5 (excluyendo) |
Para consultar la lista completa de nombres de CPE con productos y versiones, ver esta página
Referencias a soluciones, herramientas e información
- https://github.com/coredns/coredns/commit/fc447d0658b093edc8cd29a6b171216a44a644c2
- https://github.com/coredns/coredns/pull/8190
- https://github.com/coredns/coredns/releases/tag/v1.14.5
- https://github.com/coredns/coredns/security/advisories/GHSA-9pmm-cxww-rrr7
- https://github.com/coredns/coredns/security/advisories/GHSA-9pmm-cxww-rrr7



