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Trend Micro InterScan Web Security Virtual Appliance (IWSVA) 6.5 before CP 1746 mismanages certain key and certificate data. Per IWSVA documentation, by default, IWSVA acts as a private Certificate Authority (CA) and dynamically generates digital certificates that are sent to client browsers to complete a secure passage for HTTPS connections. It also allows administrators to upload their own certificates signed by a root CA. An attacker with low privileges can download the current CA certificate and Private Key (either the default ones or ones uploaded by administrators) and use those to decrypt HTTPS traffic, thus compromising confidentiality. Also, the default Private Key on this appliance is encrypted with a very weak passphrase. If an appliance uses the default Certificate and Private Key provided by Trend Micro, an attacker can simply download these and decrypt the Private Key using the default/weak passphrase.

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Trend Micro InterScan Web Security Virtual Appliance 安全漏洞

Trend Micro InterScan Web Security Virtual Appliance（IWSVA）是美国趋势科技（Trend Micro）公司的一款针对基于Web方式的威胁为企业网络提供动态的、集成式的安全保护的Web安全网关。 Trend Micro IWSVA 6.5 CP 1746之前的6.5版本中存在安全漏洞。攻击者可利用该漏洞下载当前的CA证书和私钥。

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