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o [NSE] Add ssl-heartbleed script to detect the Heartbleed bug in OpenSSL
CVE-2014-0160 [Patrik Karlsson]
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patrik
@@ -346,6 +346,7 @@ Entry { filename = "pop3-capabilities.nse", categories = { "default", "discovery
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Entry { filename = "pptp-version.nse", categories = { "version", } }
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Entry { filename = "qconn-exec.nse", categories = { "exploit", "intrusive", "vuln", } }
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Entry { filename = "qscan.nse", categories = { "discovery", "safe", } }
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Entry { filename = "quake1-info.nse", categories = { "default", "discovery", "safe", "version", } }
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Entry { filename = "quake3-info.nse", categories = { "default", "discovery", "safe", "version", } }
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Entry { filename = "quake3-master-getservers.nse", categories = { "default", "discovery", "safe", } }
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Entry { filename = "rdp-enum-encryption.nse", categories = { "discovery", "safe", } }
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@@ -426,6 +427,7 @@ Entry { filename = "ssl-cert.nse", categories = { "default", "discovery", "safe"
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Entry { filename = "ssl-date.nse", categories = { "default", "discovery", "safe", } }
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Entry { filename = "ssl-enum-ciphers.nse", categories = { "discovery", "intrusive", } }
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Entry { filename = "ssl-google-cert-catalog.nse", categories = { "discovery", "external", "safe", } }
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Entry { filename = "ssl-heartbleed.nse", categories = { "safe", "vuln", } }
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Entry { filename = "ssl-known-key.nse", categories = { "default", "discovery", "safe", "vuln", } }
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Entry { filename = "sslv2.nse", categories = { "default", "safe", } }
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Entry { filename = "sstp-discover.nse", categories = { "default", "discovery", } }
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127
scripts/ssl-heartbleed.nse
Normal file
127
scripts/ssl-heartbleed.nse
Normal file
@@ -0,0 +1,127 @@
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description = [[
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Detects whether a server is vulnerable to the OpenSSL Heartbleed bug (CVE-2014-0160).
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The code is based on the Python script ssltest.py authored by Jared Stafford (jspenguin@jspenguin.org)
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]]
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---
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-- @usage
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-- nmap -p 443 --script ssl-heartbleed <target>
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--
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-- @output
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-- PORT STATE SERVICE
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-- 443/tcp open https
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-- | ssl-heartbleed:
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-- | VULNERABLE:
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-- | The Heartbleed Bug is a serious vulnerability in the popular OpenSSL cryptographic software library. It allows for stealing information intended to be protected by SSL/TLS encryption.
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-- | State: VULNERABLE
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-- | Risk factor: High
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-- | Description:
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-- | OpenSSL versions 1.0.1 and 1.0.2-beta releases (including 1.0.1f and 1.0.2-beta1) of OpenSSL are affected by the Heartbleed bug. The bug allows for reading memory of systems protected by the vulnerable OpenSSL versions and could allow for disclosure of otherwise encrypted confidential information as well as the encryption keys themselves.
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-- |
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-- | References:
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-- | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0160
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-- | http://www.openssl.org/news/secadv_20140407.txt
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-- |_ http://cvedetails.com/cve/2014-0160/
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--
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--
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local bin = require('bin')
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local match = require('match')
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local shortport = require('shortport')
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local stdnse = require('stdnse')
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local vulns = require('vulns')
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author = "Patrik Karlsson <patrik@cqure.net>"
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license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
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categories = { "vuln", "safe" }
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portrule = function(host, port)
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return shortport.ssl(host, port) or sslcert.isPortSupported(port)
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end
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local function recvmsg(s)
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local status, hdr = s:receive_buf(match.numbytes(5), true)
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if not status then
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stdnse.print_debug(3, 'Unexpected EOF receiving record header - server closed connection')
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return
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end
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local pos, typ, ver, ln = bin.unpack('>CSS', hdr)
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status, pay = s:receive_buf(match.numbytes(ln), true)
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if not status then
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stdnse.print_debug(3, 'Unexpected EOF receiving record payload - server closed connection')
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return
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end
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return true, typ, ver, pay
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end
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action = function(host, port)
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local vuln_table = {
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title = "The Heartbleed Bug is a serious vulnerability in the popular OpenSSL cryptographic software library. It allows for stealing information intended to be protected by SSL/TLS encryption.",
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state = vulns.STATE.NOT_VULN,
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risk_factor = "High",
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description = [[
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OpenSSL versions 1.0.1 and 1.0.2-beta releases (including 1.0.1f and 1.0.2-beta1) of OpenSSL are affected by the Heartbleed bug. The bug allows for reading memory of systems protected by the vulnerable OpenSSL versions and could allow for disclosure of otherwise encrypted confidential information as well as the encryption keys themselves.
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]],
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references = {
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'https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0160',
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'http://www.openssl.org/news/secadv_20140407.txt ',
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'http://cvedetails.com/cve/2014-0160/'
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}
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}
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local hello = bin.pack('H', [[16 03 02 00 dc 01 00 00 d8 03 02 53
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43 5b 90 9d 9b 72 0b bc 0c bc 2b 92 a8 48 97 cf
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bd 39 04 cc 16 0a 85 03 90 9f 77 04 33 d4 de 00
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00 66 c0 14 c0 0a c0 22 c0 21 00 39 00 38 00 88
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00 87 c0 0f c0 05 00 35 00 84 c0 12 c0 08 c0 1c
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c0 1b 00 16 00 13 c0 0d c0 03 00 0a c0 13 c0 09
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c0 1f c0 1e 00 33 00 32 00 9a 00 99 00 45 00 44
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c0 0e c0 04 00 2f 00 96 00 41 c0 11 c0 07 c0 0c
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c0 02 00 05 00 04 00 15 00 12 00 09 00 14 00 11
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00 08 00 06 00 03 00 ff 01 00 00 49 00 0b 00 04
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03 00 01 02 00 0a 00 34 00 32 00 0e 00 0d 00 19
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00 0b 00 0c 00 18 00 09 00 0a 00 16 00 17 00 08
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00 06 00 07 00 14 00 15 00 04 00 05 00 12 00 13
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00 01 00 02 00 03 00 0f 00 10 00 11 00 23 00 00
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00 0f 00 01 01]])
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local hb = bin.pack('H', '18 03 02 00 03 01 40 00')
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local report = vulns.Report:new(SCRIPT_NAME, host, port)
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local s = nmap.new_socket()
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s:set_timeout(5000)
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s:connect(host, port, "tcp")
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s:send(hello)
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while(true) do
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local status, typ, ver, pay = recvmsg(s)
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if not status then
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return report:make_output(vuln_table)
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end
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if ( typ == 22 and string.byte(pay,1) == 14 ) then break end
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end
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s:send(hb)
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while(true) do
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local status, typ, ver, pay = recvmsg(s)
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if not status then
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stdnse.print_debug(3, 'No heartbeat response received, server likely not vulnerable')
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break
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end
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if typ == 24 then
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s:close()
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if #pay > 3 then
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vuln_table.state = vulns.STATE.VULN
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break
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else
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stdnse.print_debug(3, 'Server processed malformed heartbeat, but did not return any extra data.')
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break
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end
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elseif typ == 21 then
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stdnse.print_debug(3, 'Server returned error, likely not vulnerable')
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break
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end
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end
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return report:make_output(vuln_table)
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end
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