{"id":114973,"date":"2024-04-10T14:30:01","date_gmt":"2024-04-10T12:30:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-batbadbut-zatragivayushhaya-standartnye-biblioteki-razlichnyh-yazykov-programmirovaniya"},"modified":"2024-04-10T14:30:01","modified_gmt":"2024-04-10T12:30:01","slug":"uyazvimost-batbadbut-zatragivayushhaya-standartnye-biblioteki-razlichnyh-yazykov-programmirovaniya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/de\/blog\/novosti-interneta\/uyazvimost-batbadbut-zatragivayushhaya-standartnye-biblioteki-razlichnyh-yazykov-programmirovaniya","title":{"rendered":"Die BatBadBut-Schwachstelle betrifft Standardbibliotheken verschiedener Programmiersprachen.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Anwendungen, die Skripte im bat- und cmd-Format auf der Windows-Plattform mithilfe der standardm\u00e4\u00dfigen Prozessstartfunktionen ausf\u00fchren, sind anf\u00e4llig f\u00fcr eine Schwachstelle, die es erm\u00f6glicht, eigenen Code auszuf\u00fchren, wenn beim Start Argumente ohne separate Escape-Zeichen f\u00fcr Sonderzeichen \u00fcbergeben werden. Diese Schwachstelle erhielt den Codenamen BatBadBut und tritt in Anwendungen auf, die standardm\u00e4\u00dfige Bibliotheken von Programmiersprachen wie Rust, PHP, Node.js, Python, Ruby, Go, Erlang und Haskell verwenden.      <\/p>\n<p>Das Problem wird als Schwachstelle betrachtet, da es Funktionen der Bibliothek betrifft, wie z.B. Command::arg und Command::args in Rust, die f\u00fcr die direkte \u00dcbergabe von Argumenten an den Prozess ohne deren Verarbeitung durch den Kommando-Interpreter ausgelegt sind. Es wird angenommen, dass der Entwickler der Anwendung die Argumente m\u00f6glicherweise nicht \u00fcberpr\u00fcft, da diese direkt an den zu startenden Prozess \u00fcbergeben werden. W\u00e4hrend in Unix-Systemen die Argumente dem Prozess einzeln in einem Array \u00fcbergeben werden, werden in Windows bei der Verwendung der API CreateProcess die Argumente in einer einzigen Zeichenkette formatiert, wobei das Parsing in die Verantwortung des gestarteten Prozesses f\u00e4llt.         <\/p>\n<p>Beim Start von bat- und cmd-Skripten auf der Windows-Plattform zieht die Funktion CreateProcess() implizit die ausf\u00fchrbare Datei cmd.exe heran, selbst wenn die Anwendung diese nicht im Aufruf angibt. Das Programm cmd.exe enth\u00e4lt eine eigene komplexe Logik zur Argumenttrennung, um zwischen den eigenen Argumenten und den Argumenten des ausgef\u00fchrten Skripts zu unterscheiden. Zum Schutz vor Argumenteinschleusung auf der Windows-Plattform werden in den Standardbibliotheken der Programmiersprachen separate Escaping-Handler verwendet, die sich jedoch durch Manipulation mit doppelten Anf\u00fchrungszeichen umgehen lassen.     <\/p>\n<p>\u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0432 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0435, \u0432\u044b\u0437\u044b\u0432\u0430\u044e\u0449\u0435\u0439 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0439 &#8216;.\/test.bat&#8217; \u0441 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u043e\u043c \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u043d\u044b\u0445 \u043e\u0442 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u0434\u0430\u043d\u043d\u044b\u0445, \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439 \u043c\u043e\u0436\u0435\u0442 \u043f\u0435\u0440\u0435\u0434\u0430\u0442\u044c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 &#8216;&#187;&#038;calc.exe&#8217;, \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u043f\u0440\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0435 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u044f \u0431\u0443\u0434\u0435\u0442 \u0440\u0430\u0437\u0432\u0451\u0440\u043d\u0443\u0442\u043e \u0432 \u0441\u0442\u0440\u043e\u043a\u0443 &#8216;C:&#92;Windows&#92;System32&#92;cmd.exe \/c .&#92;test.bat &#171;&#187;&#038;calc.exe&#187;&#8216; \u0438 \u043f\u0440\u0438\u0432\u0435\u0434\u0451\u0442 \u043a \u0437\u0430\u043f\u0443\u0441\u043a\u0443 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430 calc.exe. \u041c\u0435\u0442\u043e\u0434 \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u0435\u0442 \u0438 \u043f\u0440\u0438 \u043d\u0435\u044f\u0432\u043d\u043e\u043c \u0437\u0430\u043f\u0443\u0441\u043a\u0435 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0435\u0432, \u043a\u043e\u0433\u0434\u0430 \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u0442\u0441\u044f \u0438\u0441\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u044b\u0439 \u0444\u0430\u0439\u043b \u0441 \u0438\u043c\u0435\u043d\u0435\u043c &#171;test&#187; \u0431\u0435\u0437 \u0443\u043a\u0430\u0437\u0430\u043d\u0438\u044f \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f, \u0430 \u0432 \u043e\u0434\u043d\u043e\u043c \u0438\u0437 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u043e\u0432, \u0443\u043f\u043e\u043c\u044f\u043d\u0443\u0442\u044b\u0445 \u0432 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f PATH, \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0444\u0430\u0439\u043b &#171;test.bat&#187;.      <\/p>\n<p>Derzeit ist ein Patch f\u00fcr die Standardbibliothek der Programmiersprache Rust ver\u00f6ffentlicht worden (CVE-2024-24576), der in das Update Rust 1.77.2 integriert ist. Updates zur Behebung der Schwachstelle f\u00fcr Node.js und PHP sind in Vorbereitung (die Versionen 8.2.18 und 8.3.5 wurden bereits getagt, jedoch wurden die Releases noch nicht angek\u00fcndigt). Die Projekte Python, Ruby, Go, Erlang und Haskell haben vorerst nur in der Dokumentation eine Warnung \u00fcber die Schwachstelle eingef\u00fcgt, die bei unzureichender Escape-Behandlung von Sonderzeichen auftreten kann.      <\/p>\n<p>In Rust 1.77.2 wurde der Standardbibliothek eine zus\u00e4tzliche \u00dcberpr\u00fcfung hinzugef\u00fcgt, die einen Fehler zur\u00fcckgibt, wenn beim Starten eines Skripts im Argument Sonderzeichen vorhanden sind, die nicht zuverl\u00e4ssig sicher escaped werden k\u00f6nnen. F\u00fcr Entwickler, die die Escape-Logik selbst implementieren, steht die Methode CommandExt::raw_arg zur Verf\u00fcgung, die das Escaping bei Bibliotheksaufrufen vollst\u00e4ndig deaktiviert.    <\/p>\n<p>\u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u044e \u0437\u0430\u0449\u0438\u0442\u044b \u043c\u0435\u0448\u0430\u0435\u0442 \u0442\u043e, \u0447\u0442\u043e \u043f\u0440\u043e\u0441\u0442\u043e\u0433\u043e \u044d\u043a\u0440\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0434\u0432\u043e\u0439\u043d\u044b\u0445 \u043a\u0430\u0432\u044b\u0447\u0435\u043a \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e, \u0442\u0430\u043a \u043a\u0430\u043a \u043a\u043e\u043c\u0430\u043d\u0434\u043d\u044b\u0439 \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0442\u043e\u0440 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u0442 \u0438 \u0440\u0430\u0441\u043a\u0440\u044b\u0432\u0430\u0435\u0442 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0435, \u0442\u0430\u043a\u0438\u0435 \u043a\u0430\u043a &#171;%PATH%&#187;. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043a\u0430\u0432\u044b\u0447\u043a\u0443 \u043c\u043e\u0436\u043d\u043e \u043f\u043e\u0434\u0441\u0442\u0430\u0432\u0438\u0442\u044c \u0447\u0435\u0440\u0435\u0437 \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u044f\u0446\u0438\u044e \u0441 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f &#171;%CMDCMDLINE%&#187;, \u0443\u043a\u0430\u0437\u0430\u0432 \u0432\u043c\u0435\u0441\u0442\u043e &#8216;&#187;&#038;calc.exe&#8217; &#8212; &#8216;%CMDCMDLINE:~-1%&#038;calc.exe&#8217;.<br \/>\n<br \/>Quelle: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60964\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u044e\u0449\u0438\u0435 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0438 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 bat \u0438 cmd \u043d\u0430 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435 Windows \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u0448\u0442\u0430\u0442\u043d\u044b\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u0439 \u0437\u0430\u043f\u0443\u0441\u043a\u0430 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432, \u043f\u043e\u0434\u0432\u0435\u0440\u0436\u0435\u043d\u044b \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438 \u043f\u0440\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0435 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u043e\u0432 \u0431\u0435\u0437 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u044d\u043a\u0440\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0441\u043f\u0435\u0446\u0441\u0438\u043c\u0432\u043e\u043b\u043e\u0432. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0430 \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f BatBadBut \u0438 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u0445, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0445 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0435 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0442\u0430\u043a\u0438\u0445 \u044f\u0437\u044b\u043a\u043e\u0432, \u043a\u0430\u043a Rust, PHP, Node.js, Python, Ruby, Go, [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-114973","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u044e\u0449\u0438\u0435 \u0441\u0446\u0435\u043d\u0430\u0440\u0438\u0438 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 bat \u0438 cmd \u043d\u0430 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