| GEN:SID | 1:1104 |
| Message | WEB-MISC whisker space splice attack |
| Summary | This event is generated when an attempt is made to evade an IDS in a possible web attack by sending an obfuscated request in small increments.
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| Impact | Unknown.
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| Detailed Information | Under normal circumstances, a web request fits inside a single packet. However, it is possible to obfuscate a web attack by sending the attack one character at a time. This may evade some IDS systems. Tools such as Whisker can be configured to do this.
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| Affected Systems | All Web Servers |
| Attack Scenarios | An attacker can use an automated tool, like Whisker, to launch an attack against a web server.
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| Ease of Attack | Simple. Exploits and tools are widely available.
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| Corrective Action | Check the host for signs of compromise.
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| Additional References | |
| Rule References | url: www.wiretrip.net/rfp/pages/whitepapers/whiskerids.html
arachnids: 296
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