SB2021111908 - Cross-site scripting in Schneider Electric Smart-UPS SRT 5000

Description

This security bulletin contains information about 7 secuirty vulnerabilities.

1) Cross-site scripting (CVE-ID: CVE-2021-22815)

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 in Policy Configuration. 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) Permissions, Privileges, and Access Controls (CVE-ID: N/A)

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to insufficient user permissions. A remote attacker can demote superuser role.

3) Stored cross-site scripting (CVE-ID: CVE-2021-22811)

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 in Policy Configuration. A remote 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.

4) Cross-site scripting (CVE-ID: CVE-2021-22812)

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 in User Configuration. 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.

5) Cross-site request forgery (CVE-ID: N/A)

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 in NMC2. 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.

6) Improper access control (CVE-ID: N/A)

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to a misconfiguration on user creation implementation issue. A remote attacker can create a hidden user account that could be served as a backdoor account not visible from the user management interface.

7) Cross-site scripting (CVE-ID: CVE-2021-22813)

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 in Policy Configuration. 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.

Remediation

Install update from vendor's website.

References

• https://www.fortiguard.com/zeroday/FG-VD-21-006
• https://www.fortiguard.com/zeroday/FG-VD-20-141
• https://www.fortiguard.com/zeroday/FG-VD-21-004
• https://www.fortiguard.com/zeroday/FG-VD-20-142
• https://www.fortiguard.com/zeroday/FG-VD-21-007
• https://www.fortiguard.com/zeroday/FG-VD-20-140
• https://www.fortiguard.com/zeroday/FG-VD-21-005