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Networks at risk from Snort bug

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A buffer overflow flaw exists in a Snort sensor designed to detect Back Orifice, an older remote-controlled Trojan horse, Snort developer Sourcefire said in an advisory on Tuesday. An attacker could commandeer a system running Snort 2.4.0 and higher by sending a specially crafted network packet, it warned.

Sourcefire's warning prompted security provider Symantec to raise its ThreatCon global threat index to Level 2, which means an outbreak is expected.

There is no known attack code for the vulnerability, but Sourcefire on Tuesday released Snort version 2.4.3 to fix the problem.

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