SugarCRM Cross Site Scripting

`SugarCRM < 10.1.0 Multiple Reflected Cross-Site Scripting Vulnerabilities  
  
*• Software Link:*  
  
https://www.sugarcrm.com/  
  
*• Affected Versions:*  
  
All versions prior to 10.1.0 (Q3 2020).  
  
*• Vulnerabilities Description:*  
  
1) User input passed through the “do” parameter when action is set to  
“metadata” is not properly sanitized before being used to generate HTML  
output. This can be exploited by malicious users to carry out Reflected  
Cross-Site Scripting (XSS) attacks.  
  
*• Proof of Concept 1:*  
  
https://[HOST]/index.php?action=metadata&do=%27);alert(%27XSS%27)//  
  
2) User input passed through the “current_step” parameter to the “Reports”  
module is not properly sanitized before being used to generate HTML output.  
This can be exploited by malicious users to carry out Reflected Cross-Site  
Scripting (XSS) attacks.  
  
*• Proof of Concept 2:*  
  
https://  
[HOST]/index.php?module=Reports&action=ReportsWizard&save_report=on&current_step=%22%3E%3Cimg%20src=x%20onerror=alert(%22XSS%22)%3E  
  
3) User input passed through the “updated_records” parameter is not  
properly sanitized before being used to generate HTML output. This can be  
exploited by malicious users to carry out Reflected Cross-Site Scripting  
(XSS) attacks.  
  
*• Proof of Concept 3:*  
  
https://  
[HOST]/index.php?updated_records=%3Cimg%20src=x%20onerror=alert(/XSS/)%3E  
  
*• Solution:*  
  
Upgrade to version 10.1.0 (Q3 2020) or later.  
  
*• Disclosure Timeline:*  
  
[05/02/2020] – Vendor notified  
[06/02/2020] – Automoatic vendor response received  
[26/03/2020] – Vendor contacted again; no response  
[17/04/2020] – Vendor contacted again; no response  
[18/06/2020] – Vendor nodified about a 180-day disclosure deadline  
[03/08/2020] – After around 180 days the vendor silently fix the issue  
[06/08/2020] – CVE number assigned  
[10/08/2020] – Public disclosure  
  
*• CVE Reference:*  
  
The Common Vulnerabilities and Exposures project (cve.mitre.org)  
has assigned the name CVE-2020-17372  
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-17372> to these  
vulnerabilities.  
  
*• Credits:*  
  
Vulnerabilities discovered by Egidio Romano.  
  
  
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