Rule:

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Sid:
2490

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Summary:
This event is generated when an attempt is made to exploit a buffer overflow
associated with eSignal software. 

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Impact:
A successful attack may allow the execution of arbitrary code with
LOCAL_SYSTEM privilege on a vulnerable host.

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Detailed Information:
eSignal software provides real-time stock market data to client hosts.
There is a vulnerability associated with eSignal that may cause a buffer overflow,
permitting the execution of arbitrary code with the context of LOCAL_SYSTEM. 
The buffer overflow occurs when a larger than expected data payload is supplied
for certain message exchanges.

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Affected Systems:
eSignal versions 7.5 and 7.6

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Attack Scenarios:
An attacker can create and send a malformed eSignal message that may cause a buffer overflow and 
allow the subsequent execution of arbitrary code with the context of LOCAL_SYSTEM.

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Ease of Attack:
Simple. 

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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.

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Contributors:
Sourcefire Research Team
Judy Novak <judy.novak@sourcefire.com>

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Additional References

Bugtraq:
http://www.securityfocus.com/bid/9978

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