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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