CVE-2016-20047
HighSummary
EKG Gadu w wersji 1.9~pre+r2855-3+b1 zawiera lokalną podatność na przepełnienie bufora w obsłudze nazwy użytkownika, która pozwala lokalnym atakującym na wykonanie dowolnego kodu poprzez dostarczenie zbyt dużego ciągu znaków jako nazwy użytkownika. Atakujący mogą wywołać przepełnienie w funkcji strlcpy, przekazując przygotowany bufor przekraczający 258 bajtów.
Risk Assessment
Podatność ta stwarza ryzyko wykonania złośliwego kodu przez lokalnych atakujących, co może prowadzić do przejęcia kontroli nad systemem z uprawnieniami użytkownika. Może to skutkować poważnymi konsekwencjami dla bezpieczeństwa danych i integralności systemu.
Recommendation
Zaleca się aktualizację EKG Gadu do najnowszej wersji, która eliminuje tę podatność. Dodatkowo, należy ograniczyć dostęp do systemu tylko do zaufanych użytkowników.
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Original NVD description (English source)
EKG Gadu 1.9~pre+r2855-3+b1 contains a local buffer overflow vulnerability in the username handling that allows local attackers to execute arbitrary code by supplying an oversized username string. Attackers can trigger the overflow in the strlcpy function by passing a crafted buffer exceeding 258 bytes to overwrite the instruction pointer and execute shellcode with user privileges.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

