CVE-2008-5533
HighSummary
K7AntiVirus w wersjach 7.10.541 i prawdopodobnie 7.10.454, w przypadku użycia Internet Explorer 6 lub 7, umożliwia zdalnym atakującym ominięcie wykrywania złośliwego oprogramowania w dokumencie HTML. Atakujący mogą to osiągnąć, umieszczając nagłówek MZ na początku oraz modyfikując nazwę pliku, aby nie miała rozszerzenia, miała rozszerzenie .txt lub .jpg.
Risk Assessment
Organizacje mogą być narażone na złośliwe oprogramowanie, które nie zostanie wykryte przez K7AntiVirus, co może prowadzić do poważnych incydentów bezpieczeństwa. Wykorzystanie tej podatności może skutkować utratą danych lub kompromitacją systemów.
Recommendation
Zaleca się aktualizację K7AntiVirus do najnowszej wersji oraz monitorowanie i skanowanie dokumentów HTML pod kątem nietypowych nagłówków i rozszerzeń plików. Dodatkowo, warto rozważyć zastosowanie dodatkowych warstw zabezpieczeń.
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Original NVD description (English source)
K7AntiVirus 7.10.541 and possibly 7.10.454, 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.