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TITLE:
Snort DCE/RPC Preprocessor Buffer Overflow

SECUNIA ADVISORY ID:
SA24190

VERIFY ADVISORY:
http://secunia.com/advisories/24190/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Snort 2.6.x
http://secunia.com/product/13116/

DESCRIPTION:
Neel Mehta has reported a vulnerability in Snort, which can be
exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to a boundary error within the
DCE/RPC preprocessor when reassembling SMB Write AndX requests. This
can be exploited to cause a stack-based buffer overflow via a
specially crafted packet sent over a network that is monitored by
Snort .

Successful exploitation allows execution of arbitrary code.

The vulnerability reportedly affects the following versions:
* Snort 2.6.1, 2.6.1.1, and 2.6.1.2
* Snort 2.7.0 beta 1

SOLUTION:
Update to version 2.6.1.3.

The vendor recommends that beta users disable the DCE/RPC
preprocessor.

PROVIDED AND/OR DISCOVERED BY:
Neel Mehta, IBM Internet Security Systems X-Force

ORIGINAL ADVISORY:
IBM ISS X-Force:
http://www.iss.net/threats/257.html

Snort:
http://www.snort.org/docs/advisory-2007-02-19.html

OTHER REFERENCES:
US-CERT VU#196240:
http://www.kb.cert.org/vuls/id/196240

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About:
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