Perforce P4Web Denial Of Service through resource

Advisory Content :

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Symantec Vulnerability Research

http://www.symantec.com/research

Security Advisory

Advisory ID: SYMSA-2007-015

Advisory Title: Perforce P4Web Denial Of Service through resource

starvation

Author: Oliver Karow / Oliver_Karow (at) symantec (dot) com [email
concealed]

Release Date: 19 DEC 2007

Application: Perforce 2006.1

Platform: Win32

Severity: Remotely exploitable - Denial Of Service

Vendor status: Resolved

CVE Number: CVE-2007-6349

Reference: http://www.securityfocus.com/bid/26806

Overview:

- From wikipedia: "Perforce is a commercial Revision Control (RC)

system. It is developed by Perforce Software, Inc. and was founded

in 1995 by Christopher Seiwald. The Perforce system is based on a

client/server model with the server managing the collection of

source versions in one or more depots. The server software runs on

the Unix, Mac OS X, or Microsoft Windows operating systems.

The client provides graphical and command line tools for a large

number of operating systems. Also available is a suite of plugins

that integrate with various programming IDEs and third party

applications, such as XCode, Autodesk 3D Studio Max, Alias Maya,

Adobe Photoshop, Microsoft Office, Eclipse and Emacs.

Other features of the system include support for reporting

(i.e. notifying users when a file has changed), branching and

merging, and defect tracking."

There is a denial of service (DoS) vulnerability in the P4Web Daemon

which make it possible to enforce a full CPU usage of the system, by

sending a single, special crafted HTTP request.

Details:

A single HTTP request with the Content-Length header variable set

to a value greater than zero in a request which no body, will cause

the P4Webs.exe process to consume 99% of CPU time on the target

system. of up to 99%.

The attack can be executed remotely. No authentication is required

for exploitation.

Vendor Response:

Perforce has confirmed an issue with Windows-based operating

systems and P4Web versions 2006.2 and prior that can result

in the P4Web host machine becoming unusable due to excessive

CPU usage. This was discovered by our QA department in

February of 2007, and addressed in our 2007.2 release.

Recommendation:

Users concerned about this issue should upgrade to P4Web

2007.2 or later, available at no charge from:

ftp://ftp.perforce.com/perforce/r07.2/bin.ntx86/p4webinst.exe

Common Vulnerabilities and Exposures (CVE) Information:

The Common Vulnerabilities and Exposures (CVE) project has assigned

the following names to these issues. These are candidates for

inclusion in the CVE list (http://cve.mitre.org), which standardizes

names for security problems.

CVE-2007-6349

- -------Symantec Consulting Services Advisory Information-------

For questions about this advisory, or to report an error:

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For details on Symantec's Vulnerability Reporting Policy:

http://www.symantec.com/research/Symantec-Responsible-Disclosure.pdf

Consulting Services Advisory Archive:

http://www.symantec.com/research/

Consulting Services Advisory PGP Key:

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- -------------Symantec Product Advisory Information-------------

To Report a Security Vulnerability in a Symantec Product:

secure (at) symantec (dot) com [email concealed]

For general information on Symantec's Product Vulnerability

reporting and response:

http://www.symantec.com/security/

Symantec Product Advisory Archive:

http://www.symantec.com/avcenter/security/SymantecAdvisories.html

Symantec Product Advisory PGP Key:

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- ---------------------------------------------------------------

Copyright (c) 2007 by Symantec Corp.

Permission to redistribute this alert electronically is granted

as long as it is not edited in any way unless authorized by

Symantec Consulting Services. Reprinting the whole or part of

this alert in any medium other than electronically requires

permission from cs_advisories (at) symantec (dot) com. [email concealed]

Disclaimer

The information in the advisory is believed to be accurate at the

time of publishing based on currently available information. Use

of the information constitutes acceptance for use in an AS IS

condition. There are no warranties with regard to this information.

Neither the author nor the publisher accepts any liability for any

direct, indirect, or consequential loss or damage arising from use

of, or reliance on, this information.

Symantec, Symantec products, and Symantec Consulting Services are

registered trademarks of Symantec Corp. and/or affiliated companies

in the United States and other countries. All other registered and

unregistered trademarks represented in this document are the sole

property of their respective companies/owners.

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Perforce P4Web Denial Of Service through resource