Internet Explorer is a graphical web browser developed by Microsoft Corp. that has been included with Microsoft Windows since 1995. For more information about Internet Explorer, please the visit following website:
Remote exploitation of a use-after-free vulnerability in Microsoft Corp.'s Internet Explorer could allow an attacker to execute arbitrary code with the privileges of the current user.
The vulnerability occurs when an object is exchanged during a call to a certain function. The object's memory is freed, however a reference to the object remains. When the reference is later used to access the object, this now invalid memory is treated as a valid object and one of the object members is used to make an indirect function call. This may result in the execution of arbitrary code.
Exploitation of this vulnerability results in the execution of arbitrary code with the privileges of the user viewing the Web page. To exploit this vulnerability, a targeted user must load a malicious Web page created by an attacker. An attacker typically accomplishes this via social engineering or injecting content into compromised, trusted sites.
Internet Explorer versions 6 and 7 are vulnerable.
Microsoft Corp. has released patches which address this issue. Information about downloadable vendor updates can be found by clicking on the URLs shown.
The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2011-0094 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems.
11/24/2010 Initial Vendor Notification
11/24/2010 Initial Vendor Reply
04/12/2011 Coordinated Public Disclosure
This vulnerability was reported to iDefense by anonymous.
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