SB2022050605 - Multiple vulnerabilities in QNAP QTS, QuTS hero and QuTScloud

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Command Injection (CVE-ID: CVE-2021-44051)

The vulnerability allows a remote attacker to execute arbitrary commands on the target system.

The vulnerability exists due to improper input validation. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Link following (CVE-ID: CVE-2021-44052)

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to link following issue. A remote attacker can traverse the file system to unintended locations and read or overwrite files.

3) Cross-site scripting (CVE-ID: CVE-2021-44053)

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. 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.

4) Open redirect (CVE-ID: CVE-2021-44054)

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Remediation

Install update from vendor's website.

References

• https://www.qnap.com/en/security-advisory/qsa-22-16