CVE:CVE-2017-7674
CNNVD:CNNVD-201704-577
Apache Tomcat是美国阿帕奇（Apache）软件基金会下属的Jakarta项目的一款轻量级Web应用服务器，它主要用于开发和调试JSP程序，适用于中小型系统。CORS Filter是其中的一个提供跨源资源共享功能的组件。
Apache Tomcat中的CORS Filter存在安全漏洞，该漏洞源于程序没有添加特定的HTTP Vary包头。攻击者可利用该漏洞造成客户端和服务器端缓存中毒。以下版本受到影响：Apache Tomcat 9.0.0.M1版本至9.0.0.M21版本，8.5.0版本至8.5.15版本，8.0.0.RC1版本至8.0.44版本，7.0.41版本至7.0.78版本。
solution:Upgrade apache tomcat to a higher version than 7.0.41,7.0.42,7.0.43,7.0.44,7.0.45,7.0.46,7.0.47,7.0.48,7.0.49,7.0.50,7.0.52,7.0.53,7.0.54,7.0.55,7.0.56,7.0.57,7.0.58,7.0.59,7.0.60,7.0.61,7.0.62,7.0.63,7.0.64,7.0.65,7.0.66,7.0.67,7.0.68,7.0.69,7.0.70,7.0.71,7.0.72,7.0.73,7.0.74,7.0.75,7.0.76,7.0.77,7.0.78,8.0,8.0.0:rc1,8.0.0:rc10,8.0.0:rc3,8.0.0:rc5,8.0.1,8.0.2,8.0.3,8.0.4,8.0.5,8.0.6,8.0.7,8.0.8,8.0.9,8.0.10,8.0.11,8.0.12,8.0.13,8.0.14,8.0.15,8.0.16,8.0.17,8.0.18,8.0.19,8.0.20,8.0.21,8.0.22,8.0.23,8.0.24,8.0.25,8.0.26,8.0.27,8.0.28,8.0.29,8.0.30,8.0.31,8.0.32,8.0.33,8.0.34,8.0.35,8.0.36,8.0.37,8.0.38,8.0.39,8.0.40,8.0.41,8.0.42,8.0.43,8.0.44,8.5.0,8.5.1,8.5.2,8.5.3,8.5.4,8.5.5,8.5.6,8.5.7,8.5.8,8.5.9,8.5.10,8.5.11,8.5.12,8.5.13,8.5.14,8.5.15,9.0.0:m1,9.0.0:m10,9.0.0:m11,9.0.0:m12,9.0.0:m13,9.0.0:m14,9.0.0:m15,9.0.0:m16,9.0.0:m17,9.0.0:m18,9.0.0:m19,9.0.0:m2,9.0.0:m20,9.0.0:m21,9.0.0:m3,9.0.0:m4,9.0.0:m5,9.0.0:m6,9.0.0:m7,9.0.0:m8,9.0.0:m9,and avoid the version 7.0.41,7.0.42,7.0.43,7.0.44,7.0.45,7.0.46,7.0.47,7.0.48,7.0.49,7.0.50,7.0.52,7.0.53,7.0.54,7.0.55,7.0.56,7.0.57,7.0.58,7.0.59,7.0.60,7.0.61,7.0.62,7.0.63,7.0.64,7.0.65,7.0.66,7.0.67,7.0.68,7.0.69,7.0.70,7.0.71,7.0.72,7.0.73,7.0.74,7.0.75,7.0.76,7.0.77,7.0.78,8.0,8.0.0:rc1,8.0.0:rc10,8.0.0:rc3,8.0.0:rc5,8.0.1,8.0.2,8.0.3,8.0.4,8.0.5,8.0.6,8.0.7,8.0.8,8.0.9,8.0.10,8.0.11,8.0.12,8.0.13,8.0.14,8.0.15,8.0.16,8.0.17,8.0.18,8.0.19,8.0.20,8.0.21,8.0.22,8.0.23,8.0.24,8.0.25,8.0.26,8.0.27,8.0.28,8.0.29,8.0.30,8.0.31,8.0.32,8.0.33,8.0.34,8.0.35,8.0.36,8.0.37,8.0.38,8.0.39,8.0.40,8.0.41,8.0.42,8.0.43,8.0.44,8.5.0,8.5.1,8.5.2,8.5.3,8.5.4,8.5.5,8.5.6,8.5.7,8.5.8,8.5.9,8.5.10,8.5.11,8.5.12,8.5.13,8.5.14,8.5.15,9.0.0:m1,9.0.0:m10,9.0.0:m11,9.0.0:m12,9.0.0:m13,9.0.0:m14,9.0.0:m15,9.0.0:m16,9.0.0:m17,9.0.0:m18,9.0.0:m19,9.0.0:m2,9.0.0:m20,9.0.0:m21,9.0.0:m3,9.0.0:m4,9.0.0:m5,9.0.0:m6,9.0.0:m7,9.0.0:m8,9.0.0:m9