Achievo 1.4.3 - Multiple Authorisation Vulnerabilities

Advisory Name: Multiple Authorization Flaws in Achievo 1.4.3



Internal Cybsec Advisory Id: 2010-08-02



Vulnerability Class: Authorization Flaw



Release Date: 2010-Sept-28



Affected Applications: Achievo 1.4.3 (other versions may be also vulnerable)



Affected Platforms: Any



Local / Remote: Remote



Severity: Medium CVSS#2: 4.0 (AV:N/AC:L/Au:S/C:N/I:P/A:N)



Researcher: Pablo G. Milano



Vendor Status: Confirmed / Patch is available



Reference to Vulnerability Disclosure Policy: http://www.cybsec.com/vulnerability_policy.pdf



Vulnerability Description:



It is possible to create and delete arbitrary activities to and from arbitrary users by modifying IDs in
client requests.





Proof of Concept:



1) To add activities as another user, just change value of the parameter “person.id” in the POST
request to “/dispatch.php” to any other valid person ID.




2) To delete activities from any user:


http://server/dispatch.php?atknodetype=timereg.hours&atkaction=delete&atkselector=hoursbase.id='XXXX' (where „XXXX. is the actual ID of the activity to be deleted)





Solution: Upgrade to version 1.4.5



Vendor Response:



2010-Aug-04: Vendor is contacted

2010-Aug-05: Vulnerabilities details are sent to vendor

2010-Aug-25: Vendor informs status


2010-Sept-27: Vendor and researcher agree publication date

2010-Sept-28: Vulnerability public disclosure / Patch is released







Contact Information:



For more information regarding the vulnerability feel free to contact the researcher at

pmilano <at> cybsec <dot> com



About CYBSEC S.A. Security Systems



Since 1996, CYBSEC is engaged exclusively in rendering professional services specialized in
Information Security. Their area of services covers Latin America, Spain and over 250 customers are a
proof of their professional life.



To keep objectivity, CYBSEC S.A. does not represent, neither sell, nor is associated with other
software and/or hardware provider companies.



Our services are strictly focused on Information Security, protecting our clients from emerging security
threats, maintaining their IT deployments available, safe, and reliable.



Beyond professional services, CYBSEC is continuously researching new defense and attack techniques
and contributing with the security community with high quality information exchange.



For more information, please visit www.cybsec.com

(c) 2010 - CYBSEC S.A. Security Systems