Rewterz Threat Advisory – Multiple QNAP QTS Vulnerabilities

Severity

Medium

Analysis Summary

CVE-2021-34359

QNAP QTS is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the proxy server component. A remote authenticated attacker could exploit this vulnerability to inject malicious script into a Web page which would be executed in a victim’s Web browser within the security context of the hosting Web site, once the page is viewed. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.

CVE-2021-34361 

QNAP QTS is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the proxy server component. A remote attacker could exploit this vulnerability to inject malicious script into a Web page which would be executed in a victim’s Web browser within the security context of the hosting Web site, once the page is viewed. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.

Impact

• Cross-Site Scripting

Indicators of Compromise

CVE

• CVE-2021-34359
• CVE-2021-34361

Affected Vendors

QNAP

Affected Products

• QNAP QTS

Remediation

Refer to QNAP Advisory for patch, upgrade, or suggested workaround information.

https://www.qnap.com/en/security-advisory/qsa-22-04