CVE-2025-40779
HighSummary
Podatność CVE-2025-40779 dotyczy procesu `kea-dhcp4`, który przerywa działanie w przypadku, gdy klient DHCPv4 wysyła żądanie z określonymi opcjami, a Kea nie znajduje odpowiedniej podsieci. Problem występuje tylko w przypadku unicastowych żądań kierowanych bezpośrednio do Kea, a nie przy wiadomościach rozgłoszeniowych.
Risk Assessment
Organizacje mogą doświadczyć przerwy w działaniu usługi DHCP, co może prowadzić do problemów z przydzielaniem adresów IP dla klientów. To może wpłynąć na dostępność sieci i funkcjonowanie urządzeń klienckich.
Recommendation
Zaleca się aktualizację do najnowszej wersji Kea, aby usunąć tę podatność. Należy również monitorować ruch DHCP w celu identyfikacji potencjalnych problemów związanych z unicastowymi żądaniami.
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Original NVD description (English source)
If a DHCPv4 client sends a request with some specific options, and Kea fails to find an appropriate subnet for the client, the `kea-dhcp4` process will abort with an assertion failure. This happens only if the client request is unicast directly to Kea; broadcast messages do not cause the problem. This issue affects Kea versions 2.7.1 through 2.7.9, 3.0.0, and 3.1.0.

