CVE:CVE-2012-5840
CNNVD:CNNVD-201211-419
Mozilla Mozilla Firefox是美国Mozilla基金会开发的一款开源Web浏览器。SeaMonkey是开源的Web浏览器、邮件和新闻组客户端、IRC会话客户端和HTML编辑器。Thunderbird是一个邮件客户端，支持IMAP、POP邮件协议以及HTML邮件格式。
Mozilla Firefox 17.0之前版本、Firefox ESR 10.0.11之前的10.x版本、Thunderbird 17.0之前版本、Thunderbird ESR 10.0.11之前的10.x版本、SeaMonkey 2.14之前版本中的‘nsTextEditorState::PrepareEditor’函数中存在释放后使用漏洞。远程攻击者利用该漏洞通过未明向量，执行任意代码或导致拒绝服务（堆内存破坏）。
solution:Upgrade mozilla firefox to a higher version than 17.0,and avoid the version (,17.0); Upgrade mozilla firefox_esr to a higher version than 10.0.11,and avoid the version (,10.0.11); Upgrade mozilla seamonkey to a higher version than 2.14,and avoid the version (,2.14); Upgrade mozilla thunderbird to a higher version than 17.0,and avoid the version (,17.0); Upgrade mozilla thunderbird_esr to a higher version than 10.0.11,and avoid the version (,10.0.11); Upgrade opensuse opensuse to a higher version than 11.4,12.1,12.2,and avoid the version 11.4,12.1,12.2; Upgrade suse linux_enterprise_desktop to a higher version than 10:sp4,11:sp2,and avoid the version 10:sp4,11:sp2; Upgrade suse linux_enterprise_server to a higher version than 10:sp4,11:sp2,and avoid the version 10:sp4,11:sp2; Upgrade suse linux_enterprise_software_development_kit to a higher version than 10:sp4,11:sp2,and avoid the version 10:sp4,11:sp2; Upgrade canonical ubuntu_linux to a higher version than 10.04,11.10,12.04,12.10,and avoid the version 10.04,11.10,12.04,12.10; Upgrade redhat enterprise_linux_desktop to a higher version than 5.0,6.0,and avoid the version 5.0,6.0; Upgrade redhat enterprise_linux_eus to a higher version than 6.3,and avoid the version 6.3; Upgrade redhat enterprise_linux_server to a higher version than 5.0,6.0,and avoid the version 5.0,6.0; Upgrade redhat enterprise_linux_workstation to a higher version than 5.0,6.0,and avoid the version 5.0,6.0