This signature fires when HTTP 1.1 chunked encoding transfer activity is detected.
Exclude valid client systems as sources. Exclude non-vulnerable web servers as destinations.
Chucked encoding transfers are an irregularly used feature of the HTTP 1.1 protocol, which is exclusively requested by the client. Numerous security problems have been identified with web servers which fail to properly implement chunked encoding. Traffic firing this alarm should be examined to validate that it is legitimate.
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