CVE:CVE-2018-17281
CNNVD:CNNVD-201809-996
Digium Asterisk和Certified Asterisk都是美国Digium公司的开源电话交换机（PBX）系统软件。该软件支持语音信箱、多方语音会议、交互式语音应答(IVR)等。
Digium公 Asterisk和Certified Asterisk中的res_http_websocket.so模块存在安全漏洞。攻击者可通过发送特制的HTTP请求利用该漏洞造成Asterisk崩溃。以下产品和版本受到影响：Digium公 Asterisk 13.23.0及之前版本，14.7.x版本至14.7.7版本，15.x版本至15.6.0版本；Certified Asterisk 13.21-cert2及之前版本。
solution:Upgrade digium asterisk to a higher version than 13.23.0,14.7.7,15.6.0,and avoid the version [13.0.0,13.23.0],[14.0.0,14.7.7],[15.0.0,15.6.0]; Upgrade digium certified_asterisk to a higher version than 11.6:cert12,11.6:cert13,11.6:cert14,11.6:cert15,11.6:cert16,11.6:cert17,11.6:cert18,13.1:cert3,13.1:cert4,13.1:cert5,13.1:cert6,13.1:cert7,13.1:cert8,13.8:cert1,13.8:cert2,13.8:cert3,13.8:cert4,13.13:cert1,13.13:cert2,13.13:cert3,13.13:cert4,13.13:cert5,13.13:cert6,13.13:cert7,13.13:cert8,13.13:cert9,13.21:cert1,13.21:cert2,and avoid the version 11.6:cert12,11.6:cert13,11.6:cert14,11.6:cert15,11.6:cert16,11.6:cert17,11.6:cert18,13.1:cert3,13.1:cert4,13.1:cert5,13.1:cert6,13.1:cert7,13.1:cert8,13.8:cert1,13.8:cert2,13.8:cert3,13.8:cert4,13.13:cert1,13.13:cert2,13.13:cert3,13.13:cert4,13.13:cert5,13.13:cert6,13.13:cert7,13.13:cert8,13.13:cert9,13.21:cert1,13.21:cert2; Upgrade debian debian_linux to a higher version than 8.0,9.0,and avoid the version 8.0,9.0