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Snort Back Orifice Pre-Processor Buffer Overflow Vulnerability
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Secunia Advisory:
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SA17220
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Release Date:
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2005-10-18
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Last Update:
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2005-11-14
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Snort 2.4.x
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| | CVE reference: | CVE-2005-3252 (Secunia mirror)
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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 in the handling of Back Orifice packets. This can be exploited by sending a maliciously crafted UDP packet to a network or device protected by or running an IDS or IPS system based on Snort.
The vulnerability has been reported in Snort version 2.4.0 , 2.4.1, and 2.4.2. Other versions may also be affected.
Solution:
Upgrade to version 2.4.3.
Alternatively, disable the Back Orifice pre-processor.
Provided and/or discovered by:
Neel Mehta, ISS X-Force
Changelog:
2005-11-14: Added CVE reference.
Original Advisory:
Snort:
http://www.snort.org/pub-bin/snortnews.cgi#99
X-Force:
http://xforce.iss.net/xforce/alerts/id/207
Other References:
US-CERT VU#175500:
http://www.kb.cert.org/vuls/id/175500
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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1. Snort Rule Matching Backtrack Denial of Service Vulnerability
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2. Snort "http_inspect" Preprocessor Bypass Vulnerability
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3. Snort frag3 Preprocessor Packet Reassembly Vulnerability
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4. Snort TCP SACK Option Handling Denial of Service
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