{"id":105307,"date":"2022-10-14T15:36:38","date_gmt":"2022-10-14T13:36:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/ataka-na-npm-pozvolyayushhaya-opredelit-nalichie-paketov-v-privatnyh-repozitoriyah"},"modified":"2022-10-14T15:36:38","modified_gmt":"2022-10-14T13:36:38","slug":"ataka-na-npm-pozvolyayushhaya-opredelit-nalichie-paketov-v-privatnyh-repozitoriyah","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/ataka-na-npm-pozvolyayushhaya-opredelit-nalichie-paketov-v-privatnyh-repozitoriyah","title":{"rendered":"Ataque ao NPM que permite determinar a presen\u00e7a de pacotes em reposit\u00f3rios privados","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>No NPM foi identificada uma falha que permite determinar a exist\u00eancia de pacotes em reposit\u00f3rios privados. O problema \u00e9 causado por diferentes tempos de resposta ao solicitar um pacote existente e um n\u00e3o existente por um usu\u00e1rio externo que n\u00e3o tem acesso ao reposit\u00f3rio. Na aus\u00eancia de acesso para quaisquer pacotes em reposit\u00f3rios privados, o servidor registry.npmjs.org retorna um erro com o c\u00f3digo 404, mas, no caso de exist\u00eancia de um pacote com o nome solicitado, o erro \u00e9 gerado com um atraso consider\u00e1vel. Um atacante pode usar essa caracter\u00edstica para detectar a presen\u00e7a de um pacote ao testar nomes de pacotes a partir de dicion\u00e1rios.      <\/p>\n<p>A identifica\u00e7\u00e3o de nomes de pacotes em reposit\u00f3rios privados pode ser necess\u00e1ria para realizar um ataque por meio do 'dependency confusion', manipulando a interse\u00e7\u00e3o de nomes de depend\u00eancias em reposit\u00f3rios p\u00fablicos e internos. Sabendo quais pacotes NPM internos est\u00e3o presentes em reposit\u00f3rios corporativos, um atacante pode publicar pacotes com os mesmos nomes e vers\u00f5es mais recentes em um reposit\u00f3rio p\u00fablico NPM. Se, durante a constru\u00e7\u00e3o, as bibliotecas internas n\u00e3o forem explicitamente vinculadas em suas configura\u00e7\u00f5es ao seu reposit\u00f3rio, o gerenciador de pacotes npm considerar\u00e1 o reposit\u00f3rio p\u00fablico como de maior prioridade e ir\u00e1 baixar o pacote preparado pelo atacante.    <\/p>\n<p>O GitHub foi notificado sobre o problema em mar\u00e7o, mas se recusou a implementar prote\u00e7\u00e3o contra o ataque, citando limita\u00e7\u00f5es arquitet\u00f4nicas. As empresas que utilizam reposit\u00f3rios privados s\u00e3o aconselhadas a monitorar periodicamente a emerg\u00eancia de nomes sobrepostos em reposit\u00f3rios p\u00fablicos ou a criar, em seu nome, 'stubs' com nomes que repetem os nomes de pacotes em reposit\u00f3rios privados, para que os invasores n\u00e3o possam publicar seus pacotes com nomes sobrepostos.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57918\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 NPM \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043d\u0435\u0434\u043e\u0440\u0430\u0431\u043e\u0442\u043a\u0430, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0432 \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0445 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044f\u0445. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u0440\u0430\u0437\u043d\u044b\u043c \u0432\u0440\u0435\u043c\u0435\u043d\u0435\u043c \u0440\u0435\u0430\u043a\u0446\u0438\u0438 \u043f\u0440\u0438 \u0437\u0430\u043f\u0440\u043e\u0441\u0435 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0433\u043e \u0438 \u043d\u0435\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0433\u043e \u043f\u0430\u043a\u0435\u0442\u0430 \u0441\u0442\u043e\u0440\u043e\u043d\u043d\u0438\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c, \u043d\u0435 \u0438\u043c\u0435\u044e\u0449\u0435\u0433\u043e \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044e. \u041f\u0440\u0438 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u0434\u043b\u044f \u043b\u044e\u0431\u044b\u0445 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0432 \u043f\u0440\u0438\u0432\u0430\u0442\u043d\u044b\u0445 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044f\u0445 \u0441\u0435\u0440\u0432\u0435\u0440 registry.npmjs.org \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u043e\u0448\u0438\u0431\u043a\u0443 \u0441 \u043a\u043e\u0434\u043e\u043c &#171;404&#187;, \u043d\u043e \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u0430\u043a\u0435\u0442\u0430 \u0441 \u0437\u0430\u043f\u0440\u043e\u0448\u0435\u043d\u043d\u044b\u043c \u0438\u043c\u0435\u043d\u0435\u043c \u043e\u0448\u0438\u0431\u043a\u0430 \u0432\u044b\u0434\u0430\u0451\u0442\u0441\u044f [&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-105307","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 NPM \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043d\u0435\u0434\u043e\u0440\u0430\u0431\u043e\u0442\u043a\u0430, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0432 \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0445 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