GEN:SID | 1:446 |
Message | ICMP SKIP undefined code |
Summary | This event is generated when an ICMP "SKIP" message is generated with a non-zero ICMP code.
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Impact | Informational. This may indicate that the ICMP message has been crafted.
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Detailed Information | An ICMP "SKIP" message is issued when a SKIP request to provide keying material fails. The ICMP code value for this message should be 0. If a non-zero code for the ICMP code is observed, it may be an indication that the packet was crafted with an invalid value.
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Affected Systems | This traffic should have no adverse impact.
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Attack Scenarios | An attacker may craft an ICMP "SKIP" message with an invalid ICMP code. A single packet itself is not harmful, but the unusual ICMP code may indicate that this packet was abnormally generated.
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Ease of Attack | Simple. There are many packages available to generate ICMP messages.
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Corrective Action | None.
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Additional References | |