n.runs AG
http://www.nruns.com/ security at nruns.com 
n.runs-SA-2007.006                                           14-Mar-2007
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Vendor: Mayflower GmbH, http://www.mayflower.de 
Affected Products:     PHProjekt 5.2.0
Vulnerability:         Privilege escalation
Risk:                  HIGH

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Vendor communication:

  2006/12/31        initial notification of Mayflower
  2007/01/02        Mayflower Response
  2007/01/02        PGP keys exchange
  2007/01/02        PoCs sent to Mayflower
  2007/01/11        Mayflower confirmed the bugs
  2007/01/30        Mayflower fixed the bugs and sends RC1
  2007/01/30        n.runs informs Mayflower about a persisting XSS 
                    vulnerability
  2007/02/02        Mayflower confirmed the bug
  2007/02/08        Mayflower fixed the bugs and sends RC2   
  2007/02/12        n.runs informs Mayflower about a persisting XSS
                    vulnerability
  2007/02/15        Mayflower confirmed the bug
  2007/02/20        Mayflower fixed the bug and sends RC3
  2007/02/21        n.runs verifies RC3 and reported a possible flaw 
                    within the new XSS protection library
  2007/03/14        PHProjekt 5.2.1 available
  2007/03/14        Coordinated disclosure

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Overview:
Quoting http://www.phprojekt.com/features.php?&newlang=eng 
"PHProjekt is a modular application for the coordination of group 
activities and to share informations and document via the web.
Components of PHProjekt: Group calendar, project management, time card 
system, file management, contact manager, mail client and many other 
modules.
PHProjekt supports many protocols like ldap, xml/soap and webdav and 
is available for 38 languages and 9 databases."



Description:
The vendor has been informed that every authenticated user can upload 
any files, e.g., through the calendar or file management module. 
With this privilege it is possible to upload PHP files with arbitrary 
code, which can subsequently be instantly executed. This suggests a 
privilege escalation is possible.



Solution:
The vulnerabilities were reported on Dec 31 2006 and an update has 
been released on Mar 14 2007.
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Credit: 
Bugs found by Alexios Fakos of n.runs AG. 
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References: 
http://www.nruns.com/security_advisory_phprojekt_privilege_escalation.php 
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