CVE-2026-62299

01/תיאור (מקור, אנגלית)

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 <local|nsid|subnet> <set|append|replace> ... 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.

02/מוצרים מושפעים

coredns.io: coredns

03/קישורים5

• github.com/coredns/coredns/commit/fc447d0658b093edc8cd29a6b171‮… Patch
• github.com/coredns/coredns/pull/8190 Issue TrackingPatch
• github.com/coredns/coredns/security/advisories/GHSA-9pmm-cxww-‮… ExploitThird Party Advisory
• github.com/coredns/coredns/security/advisories/GHSA-9pmm-cxww-‮… ExploitThird Party Advisory
• github.com/coredns/coredns/releases/tag/v1.14.5 Release Notes