MS11-057 - Critical : Cumulative Security Update for Internet Explorer (2559049) - Version: 1.0
MS11-057Version2011-08-09
Severity Rating: Critical
Revision Note: V1.0 (August 9, 2011): Bulletin published.
Summary: This security update resolves five privately reported vulnerabilities and two publicly disclosed vulnerabilities in Internet Explorer. The most severe vulnerabilities could allow remote code execution if a user views a specially crafted Web page using Internet Explorer. An attacker who successfully exploited any of these vulnerabilities could gain the same user rights as the local user. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.
Bulletin details at Microsoft.com
Race condition in Microsoft Internet Explorer 6 through 8 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via vectors involving access to an object, aka "Window Open Race Condition Vulnerability."
Unspecified vulnerability in Microsoft Internet Explorer 8 on Windows 7 allows remote attackers to bypass Protected Mode and create arbitrary files by leveraging access to a Low integrity process, as demonstrated by Stephen Fewer as the third of three chained vulnerabilities during a Pwn2Own competition at CanSecWest 2011.
Microsoft Internet Explorer 6 through 9 does not properly implement JavaScript event handlers, which allows remote attackers to access content from a different (1) domain or (2) zone via unspecified script code, aka "Event Handlers Information Disclosure Vulnerability."
The telnet URI handler in Microsoft Internet Explorer 6 through 9 does not properly launch the handler application, which allows remote attackers to execute arbitrary programs via a crafted web site, aka "Telnet Handler Remote Code Execution Vulnerability."
Microsoft Internet Explorer 6 through 9 does not properly handle unspecified character sequences, which allows remote attackers to read content from a different (1) domain or (2) zone via a crafted web site that triggers "inactive filtering," aka "Shift JIS Character Encoding Vulnerability."
Microsoft Internet Explorer 7 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, aka "XSLT Memory Corruption Vulnerability."
Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, aka "Style Object Memory Corruption Vulnerability."
Microsoft Internet Explorer 9 and earlier does not properly restrict cross-zone drag-and-drop actions, which allows user-assisted remote attackers to read cookie files via vectors involving an IFRAME element with a SRC attribute containing an http: URL that redirects to a file: URL, as demonstrated by a Facebook game, related to a "cookiejacking" issue, aka "Drag and Drop Information Disclosure Vulnerability." NOTE: this vulnerability exists because of an incomplete fix in the Internet Explorer 9 release.
Total number of vulnerabilities : 8
Search For Vulnerabilities By Microsoft References
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