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Oxide Webserver 2.0.4 Denial Of Service

Oxide Webserver 2.0.4 Denial Of Service
Posted Jul 20, 2012
Authored by Antu Sanadi | Site secpod.com

Oxide Webserver versions 2.0.4 and below suffer from a remote denial of service vulnerability.

tags | exploit, remote, denial of service
MD5 | b095853b9282081b810c3e39455ce280

Oxide Webserver 2.0.4 Denial Of Service

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##############################################################################
#
# Title : Oxide Webserver Remote Denial of Service Vulnerability
# Author : Antu Sanadi SecPod Technologies (www.secpod.com)
# Vendor : http://sourceforge.net/projects/oxide/
# Advisory : http://secpod.org/blog/?p=516
# : http://secpod.org/advisories/SecPod_Oxide_WebServer_DoS_Vuln.txt
# Software : Oxide Webserver v2.0.4 and prior.
# Date : 29/06/2012
#
###############################################################################

SecPod ID: 1043 24/01/2012 Issue Discovered
19/06/2012 Vendor Notified
No Response from vendor
18/07/2012 Advisory Released


Class: Denial of Service Severity: High


Overview:
---------
Oxide Webserver v2.0.4 is prone to a remote Denial of Service vulnerability
as it fails to handle crafted requests from the client properly.


Technical Description:
----------------------
The vulnerability is caused by an error in handling some crafted characters
in HTTP GET requests, which causes the server to crash.


Impact:
--------
Successful exploitation could allow an attacker to crash a vulnerable server.


Affected Software:
------------------
Oxide Webserver version 2.0.4 and prior.


Tested on,
Oxide Webserver version 2.0.4 on Windows XP SP3


References:
-----------
http://secpod.org/blog/?p=516
http://sourceforge.net/projects/oxide
http://sourceforge.net/projects/oxide-ws/files
http://secpod.org/advisories/SecPod_Oxide_WebServer_DoS_Vuln.txt


Proof of Concept:
----------------
http://www.example.com:80/?.
http://www.example.com:80/<.
http://www.example.com:80/$.
http://www.example.com:80/cc.


Solution:
----------
Not available


Risk Factor:
-------------
CVSS Score Report:
ACCESS_VECTOR = NETWORK
ACCESS_COMPLEXITY = LOW
AUTHENTICATION = NONE
CONFIDENTIALITY_IMPACT = NONE
INTEGRITY_IMPACT = NONE
AVAILABILITY_IMPACT = COMPLETE
EXPLOITABILITY = PROOF_OF_CONCEPT
REMEDIATION_LEVEL = UNAVAILABLE
REPORT_CONFIDENCE = CONFIRMED
CVSS Base Score = 7.8 (High) (AV:N/AC:L/Au:N/C:N/I:N/A:C)


Credits:
--------
Antu Sanadi of SecPod Technologies has been credited with the discovery of this
vulnerability.

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