CVE-2025-30194: falha de alta gravidade em PowerDNS DNSdist
Denial of service via crafted DoH exchange
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Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.5epss 2.3%
When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.
The remedy is: upgrade to the patched 1.9.9 version.
A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.
We would like to thank Charles Howes for bringing this issue to our attention.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Produtos afetados
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Referências
https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2025-02.htmlhttps://www.vicarius.io/vsociety/posts/cve-2025-30194-detection-dnsdist-vulnerabilityhttps://www.vicarius.io/vsociety/posts/cve-2025-30194-mitigate-dnsdist-vulnerabilityhttp://www.openwall.com/lists/oss-security/2025/04/29/1