CVE-2008-5520
HighSummary
AhnLab V3 w wersjach 2008.12.4.1 oraz prawdopodobnie 2008.9.13.0, w przypadku użycia Internet Explorer 6 lub 7, pozwala zdalnym atakującym na ominięcie 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
Organizacje mogą być narażone na ataki z wykorzystaniem złośliwego oprogramowania, które nie zostanie wykryte przez AhnLab V3, co może prowadzić do kompromitacji systemów. To stwarza poważne zagrożenie dla bezpieczeństwa danych i infrastruktury IT.
Recommendation
Zaleca się aktualizację oprogramowania AhnLab V3 do najnowszej wersji oraz monitorowanie i skanowanie plików HTML pod kątem nietypowych nagłówków i rozszerzeń. Dodatkowo, warto rozważyć wdrożenie dodatkowych mechanizmów zabezpieczających przed złośliwym oprogramowaniem.
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Original NVD description (English source)
AhnLab V3 2008.12.4.1 and possibly 2008.9.13.0, 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.