Rewterz Threat Advisory – CVE-2021-31521 – Trend Micro InterScan Web Security Virtual Appliance Vulnerability

Severity

Medium

Analysis Summary

CVE-2021-31521

Trend Micro InterScan Web Security Virtual Appliance is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the Captive Portal. A remote authenticated attacker could exploit this vulnerability using a specially-crafted URL to execute script in a victim’s Web browser within the security context of the hosting Web site, once the URL is clicked. An attacker could use this vulnerability to steal the victim’s cookie-based authentication credentials.

Impact

Credential Theft
Session Hijacking

Affected Vendors

Trend Micro

Affected Products

Trend Micro InterScan Web Security Virtual Appliance (IWSVA) 6.5

Remediation

Download the latest patches and updates provided on the vendor website at https://success.trendmicro.com/solution/000286452

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