Group-Officeに認証後RCEの脆弱性、修正版あり
Summary
グループウェアのGroup-Officeに、ログインできる利用者がサーバー上で任意のOSコマンドを実行できる脆弱性が見つかりました。使っている系統の修正版（6.8.167・25.0.102・26.0.27）へ更新し、未更新だった期間があれば侵害の跡も確認してください。
AI summary
Produced by SecPulse using an external AI model; it may contain mistakes. Check the original description and references below before acting on it.
グループウェアのGroup-Officeに、ログインできる利用者がサーバー上で任意のOSコマンドを実行できる脆弱性が見つかりました。使っている系統の修正版（6.8.167・25.0.102・26.0.27）へ更新し、未更新だった期間があれば侵害の跡も確認してください。
Original description The description as published by the source.
Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.167, 25.0.102, and 26.0.27, the Contact/labels JMAP endpoint in GroupOffice accepts a fully attacker-controlled template string (tpl parameter) that is passed without restriction to TemplateParser::parse(). When the template contains an [assign] block whose expression includes a {{...}} variable reference, the engine calls eval() on the expanded expression after running it through a validateExpression() guard. The guard double-quotes unrecognized tokens, but PHP 7+ allows a string enclosed in parentheses to be invoked as a function ("system")("id") is valid PHP and calls system("id"). A single authenticated HTTP request is sufficient to execute arbitrary OS commands as the web server user (www-data). This issue has been patched in versions 6.8.167, 25.0.102, and 26.0.27.
Source: CVE.org (CVE Program・cvelistV5) NVD