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icon4.gif   possible DOS vulnerability with negative Content-Length field, posted by Christian Herzog on Tue Dec 5 15:30:43 2017 
    icon2.gif   Re: possible DOS vulnerability with negative Content-Length field, posted by Stefan Ritt on Wed Dec 6 13:34:56 2017 
Message ID: 68708     Entry time: Tue Dec 5 15:30:43 2017     Reply to this: 68709
Icon: Warning  Author: Christian Herzog  Author Email: herzog@phys.ethz.ch 
Category: Question  OS: Linux  ELOG Version: ELOG V3.1.2 
Subject: possible DOS vulnerability with negative Content-Length field 

Hi,

 

a routine scan revealed a possible DOS attack vector: sending an invalid POST HTTP request with a negative Content-Length field crashes our elog instance, leading to service unavailability.

 

thanks,

-Christian

 

 

-- 
Dr. Christian Herzog <herzog@phys.ethz.ch>  support: +41 44 633 26 68
IT Services Group, HPT H 8                    voice: +41 44 633 39 50
Department of Physics, ETH Zurich           
8093 Zurich, Switzerland                     http://nic.phys.ethz.ch/

 

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