CVE-2021-47854
CriticalSummary
Wersja 45723 DD-WRT zawiera podatność na przepełnienie bufora w usłudze odkrywania sieci UPNP, która pozwala zdalnym atakującym na potencjalne wykonanie dowolnego kodu. Atakujący mogą wysyłać spreparowane pakiety M-SEARCH z nadmiernie dużymi ładunkami UUID, aby wywołać warunki przepełnienia bufora na docelowym urządzeniu.
Risk Assessment
Podatność ta stwarza ryzyko zdalnego wykonania kodu, co może prowadzić do przejęcia kontroli nad urządzeniem i potencjalnego dostępu do sieci lokalnej. Organizacje powinny być świadome możliwości ataków, które mogą wykorzystać tę lukę.
Recommendation
Zaleca się aktualizację oprogramowania DD-WRT do najnowszej wersji, aby usunąć tę podatność. Dodatkowo, warto rozważyć ograniczenie dostępu do usługi UPNP w sieci.
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Original NVD description (English source)
DD-WRT version 45723 contains a buffer overflow vulnerability in the UPNP network discovery service that allows remote attackers to potentially execute arbitrary code. Attackers can send crafted M-SEARCH packets with oversized UUID payloads to trigger buffer overflow conditions on the target device.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

