CVE-2008-5531
HighSummary
Fortinet Antivirus w wersji 3.113.0.0, używając przeglądarki Internet Explorer 6 lub 7, pozwala zdalnym atakującym na obejście wykrywania złośliwego oprogramowania w dokumencie HTML. Możliwe jest to poprzez umieszczenie nagłówka MZ na początku oraz modyfikację nazwy pliku, aby nie miała rozszerzenia, miała rozszerzenie .txt lub .jpg.
Risk Assessment
Organizacja jest narażona na ryzyko infekcji złośliwym oprogramowaniem, ponieważ atakujący mogą skutecznie ukryć złośliwe pliki przed detekcją. To może prowadzić do poważnych incydentów bezpieczeństwa i utraty danych.
Recommendation
Zaleca się aktualizację oprogramowania antywirusowego do najnowszej wersji oraz monitorowanie i skanowanie wszystkich dokumentów HTML przed ich otwarciem. Dodatkowo, warto rozważyć ograniczenie użycia przestarzałych przeglądarek internetowych.
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Original NVD description (English source)
Fortinet Antivirus 3.113.0.0, when Internet Explorer 6 or 7 is used, allows remote attackers to bypass detection of malware in an HTML document by placing an MZ header (aka "EXE info") at the beginning, and modifying the filename to have (1) no extension, (2) a .txt extension, or (3) a .jpg extension, as demonstrated by a document containing a CVE-2006-5745 exploit.