CVE:CVE-2017-7793
CNNVD:CNNVD-201710-1045
Mozilla Firefox、Firefox ESR和Thunderbird都是由美国Mozilla基金会开发的产品。Firefox是一款开源Web浏览器，Firefox ESR是Firefox的一个延长支持版本。Thunderbird是从Mozilla Application Suite中独立出来的一套电子邮件客户端软件。
Mozilla Thunderbird 52.4之前的版本、Firefox ESR 52.4之前的版本和Firefox 56之前的版本中的Fetch API存在释放后重用漏洞。远程攻击者可利用该漏洞造成拒绝服务（崩溃）。
solution:Upgrade debian debian_linux to a higher version than 7.0,8.0,9.0,and avoid the version 7.0,8.0,9.0; Upgrade redhat enterprise_linux to a higher version than 5.0,6.0,7.0,and avoid the version 5.0,6.0,7.0; Upgrade redhat enterprise_linux_desktop to a higher version than 5.0,6.0,7.0,and avoid the version 5.0,6.0,7.0; Upgrade redhat enterprise_linux_server to a higher version than 5.0,6.0,7.0,and avoid the version 5.0,6.0,7.0; Upgrade redhat enterprise_linux_server_aus to a higher version than 7.3,7.4,and avoid the version 7.3,7.4; Upgrade redhat enterprise_linux_server_eus to a higher version than 7.3,7.4,7.5,and avoid the version 7.3,7.4,7.5; Upgrade redhat enterprise_linux_workstation to a higher version than 5.0,6.0,7.0,and avoid the version 5.0,6.0,7.0; Upgrade mozilla thunderbird to a higher version than 52.4.0,and avoid the version (,52.4.0); Upgrade mozilla firefox to a higher version than 56.0,and avoid the version (,56.0); Upgrade mozilla firefox_esr to a higher version than 52.4.0,and avoid the version (,52.4.0)