CVE:CVE-2009-2426
CNNVD:CNNVD-200907-166
Tor(The Onion Router)是第二代洋葱路由的一种实现，用户通过Tor可以在因特网上进行匿名交流。
Tor在src/or/relay.c文件中的connection_edge_process_relay_cell_not_open()函数中的错误可能允许恶意的出口中继将客户端的DNS请求解析为内部IP地址，这有助于DNS欺骗攻击。
solution:Upgrade tor tor to a higher version than 0.1.0.1,0.1.0.2,0.1.0.3,0.1.0.4,0.1.0.5,0.1.0.6,0.1.0.7,0.1.0.8,0.1.0.9,0.1.0.10,0.1.0.11,0.1.0.12,0.1.0.13,0.1.0.14,0.1.0.15,0.1.0.16,0.1.0.17,0.1.0.18,0.1.0.19,0.1.1,0.1.1.1,0.1.1.1_alpha,0.1.1.2,0.1.1.2_alpha,0.1.1.3,0.1.1.3_alpha,0.1.1.4,0.1.1.4_alpha,0.1.1.5,0.1.1.5_alpha,0.1.1.6,0.1.1.6_alpha,0.1.1.7,0.1.1.7_alpha,0.1.1.8,0.1.1.8_alpha,0.1.1.9,0.1.1.9_alpha,0.1.1.10,0.1.1.10_alpha,0.1.1.11,0.1.1.12,0.1.1.13,0.1.1.14,0.1.1.15,0.1.1.16,0.1.1.17,0.1.1.18,0.1.1.19,0.1.1.20,0.1.1.21,0.1.1.22,0.1.1.23,0.1.1.25,0.1.1.26,0.1.2.1_alpha-cvs,0.1.2.2,0.1.2.3:alpha,0.1.2.4,0.1.2.5,0.1.2.5:alpha,0.1.2.6:alpha,0.1.2.7:alpha,0.2.0.1:alpha,0.2.0.2:alpha,0.2.0.3:alpha,0.2.0.4:alpha,0.2.0.5:alpha,0.2.0.6:alpha,0.2.0.7:alpha,0.2.0.8:alpha,0.2.0.9:alpha,0.2.0.10:alpha,0.2.0.11:alpha,0.2.0.12:alpha,0.2.0.13:alpha,0.2.0.14:alpha,0.2.0.15:alpha,0.2.0.16:alpha,0.2.0.17:alpha,0.2.0.18:alpha,0.2.0.19:alpha,0.2.0.20:alpha,0.2.0.21:alpha,0.2.0.22:alpha,0.2.0.23:alpha,0.2.0.24:alpha,0.2.0.25:alpha,0.2.0.26:alpha,0.2.0.27:alpha,0.2.0.28:alpha,0.2.0.29:alpha,0.2.0.31:alpha,0.2.0.33,0.2.0.34:alpha,and avoid the version 0.1.0.1,0.1.0.2,0.1.0.3,0.1.0.4,0.1.0.5,0.1.0.6,0.1.0.7,0.1.0.8,0.1.0.9,0.1.0.10,0.1.0.11,0.1.0.12,0.1.0.13,0.1.0.14,0.1.0.15,0.1.0.16,0.1.0.17,0.1.0.18,0.1.0.19,0.1.1,0.1.1.1,0.1.1.1_alpha,0.1.1.2,0.1.1.2_alpha,0.1.1.3,0.1.1.3_alpha,0.1.1.4,0.1.1.4_alpha,0.1.1.5,0.1.1.5_alpha,0.1.1.6,0.1.1.6_alpha,0.1.1.7,0.1.1.7_alpha,0.1.1.8,0.1.1.8_alpha,0.1.1.9,0.1.1.9_alpha,0.1.1.10,0.1.1.10_alpha,0.1.1.11,0.1.1.12,0.1.1.13,0.1.1.14,0.1.1.15,0.1.1.16,0.1.1.17,0.1.1.18,0.1.1.19,0.1.1.20,0.1.1.21,0.1.1.22,0.1.1.23,0.1.1.25,0.1.1.26,0.1.2.1_alpha-cvs,0.1.2.2,0.1.2.3:alpha,0.1.2.4,0.1.2.5,0.1.2.5:alpha,0.1.2.6:alpha,0.1.2.7:alpha,0.2.0.1:alpha,0.2.0.2:alpha,0.2.0.3:alpha,0.2.0.4:alpha,0.2.0.5:alpha,0.2.0.6:alpha,0.2.0.7:alpha,0.2.0.8:alpha,0.2.0.9:alpha,0.2.0.10:alpha,0.2.0.11:alpha,0.2.0.12:alpha,0.2.0.13:alpha,0.2.0.14:alpha,0.2.0.15:alpha,0.2.0.16:alpha,0.2.0.17:alpha,0.2.0.18:alpha,0.2.0.19:alpha,0.2.0.20:alpha,0.2.0.21:alpha,0.2.0.22:alpha,0.2.0.23:alpha,0.2.0.24:alpha,0.2.0.25:alpha,0.2.0.26:alpha,0.2.0.27:alpha,0.2.0.28:alpha,0.2.0.29:alpha,0.2.0.31:alpha,0.2.0.33,0.2.0.34:alpha