CVE-2019-25627
HighSummary
FlexHEX 2.71 zawiera lokalną podatność na przepełnienie bufora w polu Nazwa Strumienia, która pozwala lokalnym atakującym na wykonanie dowolnego kodu poprzez wywołanie przepełnienia strukturalnego handlera wyjątków (SEH). Atakujący mogą stworzyć złośliwy plik tekstowy z odpowiednio wyrównanym kodem powłoki i wskaźnikami łańcucha SEH, a następnie wykonać dowolne polecenia, takie jak calc.exe, gdy handler wyjątków zostanie wywołany.
Risk Assessment
Podatność ta stwarza poważne ryzyko dla organizacji, ponieważ umożliwia lokalnym atakującym uruchamianie dowolnych poleceń na zainfekowanym systemie. Może to prowadzić do utraty danych, naruszenia integralności systemu oraz nieautoryzowanego dostępu do zasobów.
Recommendation
Zaleca się aktualizację FlexHEX do najnowszej wersji, która eliminuje tę podatność. Dodatkowo, należy ograniczyć dostęp do aplikacji tylko dla zaufanych użytkowników oraz monitorować systemy pod kątem podejrzanej aktywności.
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Original NVD description (English source)
FlexHEX 2.71 contains a local buffer overflow vulnerability in the Stream Name field that allows local attackers to execute arbitrary code by triggering a structured exception handler (SEH) overflow. Attackers can craft a malicious text file with carefully aligned shellcode and SEH chain pointers, paste the contents into the Stream Name dialog, and execute arbitrary commands like calc.exe when the exception handler is triggered.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

