CVE-2025-30194
HighSummary
Podatność w DNSdist, gdy jest skonfigurowany do obsługi DoH przez dostawcę nghttp2, pozwala atakującemu na wywołanie odmowy usługi poprzez stworzenie wymiany DoH, która prowadzi do nielegalnego dostępu do pamięci (double-free) i awarii DNSdist.
Risk Assessment
Organizacja może doświadczyć przerwy w dostępności usług DNS, co może prowadzić do poważnych zakłóceń w działaniu aplikacji i systemów zależnych od DNS.
Recommendation
Zaleca się aktualizację do poprawionej wersji 1.9.9. Alternatywnie, można tymczasowo przełączyć się na dostawcę h2o, aż DNSdist zostanie zaktualizowany do wersji z poprawką.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

