Rapid7 Vulnerability & Exploit Database

Apache Range Header DoS (Apache Killer)

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Apache Range Header DoS (Apache Killer)



The byterange filter in the Apache HTTP Server 2.0.x through 2.0.64, and 2.2.x through 2.2.19 allows remote attackers to cause a denial of service (memory and CPU consumption) via a Range header that expresses multiple overlapping ranges, exploit called "Apache Killer"


  • Kingcope
  • Masashi Fujiwara
  • Markus Neis <markus.neis@gmail.com>


Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use auxiliary/dos/http/apache_range_dos
msf auxiliary(apache_range_dos) > show actions
msf auxiliary(apache_range_dos) > set ACTION < action-name >
msf auxiliary(apache_range_dos) > show options
    ...show and set options...
msf auxiliary(apache_range_dos) > run 

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security