SB2021042161 - Multiple vulnerabilities in MDaemon

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Cross-site scripting (CVE-ID: CVE-2021-27180)

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

The vulnerability exists due to insufficient sanitization of user-supplied data in WorldClient. A remote attacker can trick the victim to follow a specially crafted link 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.

2) Cross-site request forgery (CVE-ID: CVE-2021-27181)

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

3) Code injection (CVE-ID: CVE-2021-27182)

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to improper input validation when processing email messages in Webmail WorldClient. A remote attacker can send a specially crafted HTML email with injected iframe and gain access to sensitive information or perform spoofing attack.

4) Arbitrary file upload (CVE-ID: CVE-2021-27183)

The vulnerability allows a remote user to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload. A remote administrator can upload a malicious file to any location on the server and execute it.

Remediation

Install update from vendor's website.

References

• https://github.com/chudyPB/MDaemon-Advisories
• https://www.altn.com/Support/SecurityUpdate/MD011221_MDaemon_EN/