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zdiAnonymousZDI-09-087
HistoryDec 08, 2009 - 12:00 a.m.

Microsoft Internet Explorer CSS Race Condition Code Execution Vulnerability

2009-12-0800:00:00
Anonymous
www.zerodayinitiative.com
9

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.656 Medium

EPSS

Percentile

97.9%

This vulnerability allows remote attackers to potentially execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page. The specific flaw exists during a race condition while repetitively clicking between two elements at a fast rate. When clicking back and forth between these two elements a corruption occurs resulting in a call to a dangling pointer which can be further leveraged into code execution via a heap spray. Exploitation of this vulnerability will lead to remote system compromise under the credentials of the currently logged in user.

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.656 Medium

EPSS

Percentile

97.9%