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Vulnerability record · CVE-2006-0839 · published 22 February 2006

CVE-2006-0839: Sourcefire snort vulnerability

SSourcefire · Snort

The frag3 preprocessor in Sourcefire Snort 2.4.3 does not properly reassemble certain fragmented packets with IP options, which allows remote attackers to evade detection of certain attacks, possibly related to IP option lengths.

5.0 CVSS 2.0 Medium EPSS 1.4% · top 28.4%
5.0CVSS 2.0 base score
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD

Description

The frag3 preprocessor in Sourcefire Snort 2.4.3 does not properly reassemble certain fragmented packets with IP options, which allows remote attackers to evade detection of certain attacks, possibly related to IP option lengths.

AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://secunia.com/advisories/18959
http://www.securityfocus.com/archive/1/425290/100/0/threaded
http://www.securityfocus.com/bid/16705
https://exchange.xforce.ibmcloud.com/vulnerabilities/24811
http://secunia.com/advisories/18959
http://www.securityfocus.com/archive/1/425290/100/0/threaded
http://www.securityfocus.com/bid/16705
https://exchange.xforce.ibmcloud.com/vulnerabilities/24811

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2003-0209Smoothwall vulnerabilityInteger overflow in the TCP stream reassembly module (stream4) for Snort 2.0 and earlier allows remote attackers to execute arbitrary code via large …EPSS 39%7.8CVE-2004-2652Sourcefire snort vulnerabilityThe DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options using FAST output or verbose mode, allows remote attack…EPSS 11%7.5CVE-2005-3252Snort Back Orifice preprocessor stack buffer overflow via crafted UDP packetSnort before 2.4.3 contains a stack-based buffer overflow in its Back Orifice (BO) preprocessor. A crafted UDP packet triggers the overflow, allowing…EPSS 84%analysed5.0CVE-2006-2769Sourcefire snort permissions and access controls vulnerabilityThe HTTP Inspect preprocessor (http_inspect) in Snort 2.4.0 through 2.4.4 allows remote attackers to bypass "uricontent" rules via a carriage return …EPSS 11%

Source: NIST National Vulnerability Database (record CVE-2006-0839), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.