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
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