Trend Micro InterScan Web Security Virtual Appliance transparent_setting CRLF Injection Authentication Bypass VulnerabilityZDI-17-233: March 30th, 2017
InterScan Web Security Virtual Appliance
This vulnerability allows remote attackers to bypass authentication on vulnerable installations of Trend Micro InterScan Web Security Virtual Appliance. Authentication is not required to exploit this vulnerability.
The specific flaw exists within transparent_setting. The issue results from the lack of proper validation of a user-supplied string before using it to modify a system configuration file. An attacker can leverage this vulnerability to bypass system authentication.
Vendor ResponseTrend Micro has issued an update to correct this vulnerability. More details can be found at:
2017-01-19 - Vulnerability reported to vendor
2017-03-30 - Coordinated public release of advisory
CreditThis vulnerability was discovered by:
Steven Seeley of Source Incite