cve/2019/CVE-2019-5009.md

CVE-2019-5009

Description

Vtiger CRM 7.1.0 before Hotfix2 allows uploading files with the extension "php3" in the logo upload field, if the uploaded file is in PNG format and has a size of 150x40. One can put PHP code into the image; PHP code can be executed using "" tags, as demonstrated by a CompanyDetailsSave action. This bypasses the bad-file-extensions protection mechanism. It is related to actions/CompanyDetailsSave.php, actions/UpdateCompanyLogo.php, and models/CompanyDetails.php.

POC

Reference

• http://lists.vtigercrm.com/pipermail/vtigercrm-developers/2019-January/037852.html
• https://pentest.com.tr/exploits/Vtiger-CRM-7-1-0-Remote-Code-Execution.html
• https://www.exploit-db.com/exploits/46065

Github

• https://github.com/msantos/cvecat