Xeneo PHP Web Server URL Encoding Input Validation Bug Lets Remote Users Crash the Web Service
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SecurityTracker Alert ID: 1006631 |
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CVE Reference: GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: Apr 23 2003
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Impact: Denial of service via network
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Fix Available: Yes
Exploit Included: Yes
Vendor Confirmed: Yes
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Version(s): 2.2.9 and prior versions
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Description: A denial of service vulnerability was reported in the Xeneo Web Server from Northern Solutions. A remote user can cause the web service to crash.
Secunia Research reported that a remote user can send a specially crafted URL containing a malformed URL encoding character to cause
the web service to crash. A demonstration exploit URL is provided:
http://[target]/%A
A manual restart is required to return
the web service to normal operations.
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Impact: A remote user can cause the web service to crash.
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Solution: The vendor has released a fixed version (2.2.10.0), available at:
http://www.northernsolutions.com/index.php?view=product&id=1&sec=download
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Vendor URL: www.northernsolutions.com/index.php?view=product&id=1 (Links to External Site)
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Cause: Input validation error
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Underlying OS: Windows (Any)
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Reported By: "Carsten H. Eiram" <che@secunia.com>
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Message History:
None.
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Source Message Contents
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Date: 23 Apr 2003 09:49:56 +0200
From: "Carsten H. Eiram" <che@secunia.com>
Subject: [Full-Disclosure] Secunia Research: Xeneo Web Server URL Encoding Denial of Service
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======================================================================
Secunia Research 23/04/2003
- Xeneo Web Server URL Encoding Denial of Service -
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Receive Secunia Security Advisories for free:
http://www.secunia.com/secunia_security_advisories/
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Table of Contents
1....................................................Affected Software
2.............................................................Severity
3.....................................Vendor's Description of Software
4.........................................Description of Vulnerability
5.............................................................Solution
6...........................................................Time Table
7..............................................................Credits
8........................................................About Secunia
9.........................................................Verification
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1) Affected Software
Xeneo Web Server 2.2.9 and prior.
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2) Severity
Rating: Moderately critical
Impact: Denial of Service
Where: From Remote
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3) Vendor's Description of Software
"Xeneo Web Server is designed to deliver high performance and
reliability. It can be easily extended and customized to host
everything from a personal web site to advanced web applications that
use ASP, PHP, ColdFusion, Perl, CGI and ISAPI."
"Key Xeneo Web Server features include: multiple domain support,
integrated Windows authentication, scripting interface, enhanced
filter support, ISAPI, CGI, ASP, SSL, intelligent file caching and
more."
Vendor:
http://www.northernsolutions.com
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4) Description of Vulnerability
A vulnerability in Xeneo Web Server can be exploited by malicious
people to cause a DoS (Denial of Service) on the web service.
The vulnerability is caused due to an error in the handling of
requests including a malformed URL encoding representation of a
character. By sending a request like the following, "xeneo.exe" will
crash with a runtime error.
Example:
http://[victim]/%A
The web service needs to be restarted manually before functionality
is restored.
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5) Solution
The vendor quickly responded by releasing version 2.2.10.
http://www.northernsolutions.com/index.php?view=product&sec=download&id=1
======================================================================
6) Time Table
22/04/2003 - Vulnerability discovered.
22/04/2003 - Vendor notified.
23/04/2003 - Vendor response.
23/04/2003 - Public disclosure.
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7) Credits
Discovered by Carsten H. Eiram, Secunia Research.
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8) About Secunia
Secunia collects, validates, assesses and writes advisories regarding
all the latest software vulnerabilities disclosed to the public.
These advisories are gathered in a publicly available database at the
Secunia website:
http://www.secunia.com/
Secunia offers services to our customers enabling them to receive all
relevant vulnerability information to their specific system
configuration.
Secunia offers a FREE mailing list called Secunia Security Advisories:
http://www.secunia.com/secunia_security_advisories/
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9) Verification
Please verify this advisory by visiting the Secunia website:
http://www.secunia.com/secunia_research/2003-5/
======================================================================
_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.netsys.com/full-disclosure-charter.html
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