SB2020052614 - Stored cross-site scripting in Composr CMS

Description

This security bulletin contains information about 1 security vulnerability.

1) Stored cross-site scripting (CVE-ID: CVE-2020-8789)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data passed via a Usergroup name under the Security configuration. A remote authenticated attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• http://packetstormsecurity.com/files/157787/Composr-CMS-10.0.30-Cross-Site-Scripting.html
• http://seclists.org/fulldisclosure/2020/May/39