Severity: moderate

Denial of Service



ecstatic, a simple static file server middleware, is vulnerable to denial of service. If a payload with a large number of null bytes (%00) is provided by an attacker it can crash ecstatic by running it out of memory.

Results from the original advisory

A payload of 22kB caused a lag of 1 second,
A payload of 35kB caused a lag of 3 seconds,
A payload of 86kB caused the server to crash


Update to version 2.0.0 or later.

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Advisory timeline

  1. published

    Advisory published
    Dec 13th, 2017
  2. reported

    Initial report by Checkmarx
    Dec 13th, 2017