Rule:

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Sid:
4135

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Summary:
This event is generated when an attempt is made to exploit a known
vulnerability in Internet Explorer using a JPEG (Joint Photographic
Experts Group) format image.

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Impact:
A successful attack may result in the execution of code of the attackers
choosing possibly leading to control of the target machine.

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Detailed Information:
Internet Explorer does not correctly handle JPEG images. Proper bounds
checking of input data is not carried out by the application when
processing JPEG images. This can lead to a buffer overflow condition and
an opportunity for an attacker to execute code of their choosing.

Note:
For this rule to generate an event correctly, sid 2706 must be enabled.

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Affected Systems:
	 Microsoft Internet Explorer 6.0 SP2 and prior

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Attack Scenarios:
An attacker can entice a user to visit a web server that will return a
malicious JPEG file, perhaps enabling the execution of the malicious
code when the file is opened.

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Ease of Attack:
Simple. Exploit code is publicly available.

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:
Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches as they become available.

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Contributors:
Sourcefire Vulnerability Research Team
Alex Kirk <akirk@sourcefire.com>
Nigel Houghton <nigel.houghton@sourcefire.com>

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Additional References

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