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0b0109d4af
Author: Patrik Karlsson <patrik@cqure.net> Date: Thu May 29 21:33:18 2014 -0400 fix to detect non ASA devices and unsupported versions
84 lines
3.0 KiB
Lua
84 lines
3.0 KiB
Lua
local anyconnect = require('anyconnect')
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local stdnse = require('stdnse')
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local shortport = require('shortport')
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local vulns = require('vulns')
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local sslcert = require('sslcert')
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description = [[
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Detects whether the Cisco ASA appliance is vulnerable to the Cisco ASA SSL VPN Authentication Bypass Vulnerability (CVE-2014-2128).
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]]
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---
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-- @usage
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-- nmap -p 443 --script http-vuln-cve2014-2127 <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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-- | http-vuln-cve2014-2128:
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-- | VULNERABLE:
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-- | Cisco ASA SSL VPN Authentication Bypass Vulnerability
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-- | State: VULNERABLE
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-- | Risk factor: Medium CVSSv2: 5.0 (MEDIUM) (AV:N/AC:L/AU:N/C:P/I:N/A:N)
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-- | Description:
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-- | The SSL VPN implementation in Cisco Adaptive Security Appliance (ASA) Software 8.2 before 8.2(5.47, 8.3 before 8.3(2.40), 8.4 before 8.4(7.3), 8.6 before 8.6(1.13), 9.0 before 9.0(3.8), and 9.1 before 9.1(3.2) allows remote attackers to bypass authentication via (1) a crafted cookie value within modified HTTP POST data or (2) a crafted URL, aka Bug ID CSCua85555.
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-- |
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-- | References:
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-- | http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140409-asa
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-- |_ http://cvedetails.com/cve/2014-2128/
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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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action = function(host, port)
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local vuln_table = {
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title = "Cisco ASA SSL VPN Authentication Bypass Vulnerability",
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state = vulns.STATE.NOT_VULN,
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risk_factor = "Medium",
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scores = {
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CVSSv2 = "5.0 (MEDIUM) (AV:N/AC:L/AU:N/C:P/I:N/A:N)",
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},
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description = [[
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The SSL VPN implementation in Cisco Adaptive Security Appliance (ASA) Software 8.2 before 8.2(5.47, 8.3 before 8.3(2.40), 8.4 before 8.4(7.3), 8.6 before 8.6(1.13), 9.0 before 9.0(3.8), and 9.1 before 9.1(3.2) allows remote attackers to bypass authentication via (1) a crafted cookie value within modified HTTP POST data or (2) a crafted URL, aka Bug ID CSCua85555.
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]],
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references = {
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'http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140409-asa',
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'http://cvedetails.com/cve/2014-2128/'
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}
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}
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local vuln_versions = {
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['8'] = {
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['2'] = 5.47,
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['3'] = 2.40,
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['4'] = 7.3,
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['6'] = 1.13,
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['7'] = 1.11,
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},
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['9'] = {
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['0'] = 3.8,
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['1'] = 3.2,
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},
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}
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local report = vulns.Report:new(SCRIPT_NAME, host, port)
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local ac = anyconnect.Cisco.AnyConnect:new(host, port)
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local status, err = ac:connect()
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if not status then
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return ("\n ERROR: %s"):format(err)
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else
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local ver = ac:get_version()
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if vuln_versions[ver['major']] and vuln_versions[ver['major']][ver['minor']] then
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if vuln_versions[ver['major']][ver['minor']] > tonumber(ver['rev']) then
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vuln_table.state = vulns.STATE.VULN
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end
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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 |