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images/news/ie.jpgUsers of Internet Explorer 6 and 7 may be vulnerable to a malware attack. Microsoft says that it is investigating the reported vulnerability, which affects Internet Explorer 6 Service Pack 1 on Microsoft Windows 2000 Service Pack 4, and Internet Explorer 6 and Internet Explorer 7 on Windows XP, Windows Server 2003, Windows Vista, and Windows Server 2008.
Internet Explorer 5.01 Service Pack 4 and Internet Explorer 8 are not affected.
Microsoft says that it is not aware of attacks attempting to exploit the reported vulnerability.
"The vulnerability exists as an invalid pointer reference of Internet Explorer," Microsoft's Advisory states. "It is possible under certain conditions for a CSS/Style object to be accessed after the object is deleted. In a specially-crafted attack, Internet Explorer attempting to access a freed object can lead to running attacker-supplied code."
The fact that Internet Explorer 6 and 7 together account for about 41% of the Web browser market means attackers will be tempted to exploit the vulnerability, says Michael Sutton, VP of security research at Zscaler, a computer security company.
Infoweek
Internet Explorer 5.01 Service Pack 4 and Internet Explorer 8 are not affected.
Microsoft says that it is not aware of attacks attempting to exploit the reported vulnerability.
"The vulnerability exists as an invalid pointer reference of Internet Explorer," Microsoft's Advisory states. "It is possible under certain conditions for a CSS/Style object to be accessed after the object is deleted. In a specially-crafted attack, Internet Explorer attempting to access a freed object can lead to running attacker-supplied code."
The fact that Internet Explorer 6 and 7 together account for about 41% of the Web browser market means attackers will be tempted to exploit the vulnerability, says Michael Sutton, VP of security research at Zscaler, a computer security company.
Infoweek
