If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB...

原文の説明

取得元が公開している説明をそのまま載せています (多くは英語)。

If NSD is configured as secondary for a zone, the primary of that zone can crash NSD with an AXFR containing a DNS message with a special crafted SVCB RR with an rdata size of 65512, that let's an (uint16_t) variable that is used to allocate space needed for the RR wrap (because total size > 65535), causing a heap overflow. The attacker can perform a controlled (RCE class) head write of up to 65509 bytes

出典: OSV.dev (Open Source Vulnerabilities) OSV

影響パッケージ

Alpine:v3.24 nsd

[{"type":"ECOSYSTEM","events":[{"introduced":"4.14.0"},{"fixed":"4.14.3-r0"}]}]

参照URL

advisory security.alpinelinux.org