{"id":35876,"date":"2019-10-31T22:07:21","date_gmt":"2019-10-31T19:07:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/v-platforme-elektronnoj-kommertsii-magento-ustraneno-75-uyazvimostej\/"},"modified":"2019-10-31T22:07:21","modified_gmt":"2019-10-31T19:07:21","slug":"v-platforme-elektronnoj-kommertsii-magento-ustraneno-75-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/v-platforme-elektronnoj-kommertsii-magento-ustraneno-75-uyazvimostej","title":{"rendered":"75 vulnerabilidades foram corrigidas na plataforma de com\u00e9rcio eletr\u00f4nico Magento","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Na plataforma aberta para organiza\u00e7\u00e3o de com\u00e9rcio eletr\u00f4nico Magento<\/a><\/noindex>, que ocupa cerca de 20%<\/a><\/noindex> do mercado de sistemas para cria\u00e7\u00e3o de lojas online, foram identificadas<\/a><\/noindex> vulnerabilidades, cuja combina\u00e7\u00e3o permite a execu\u00e7\u00e3o de um ataque para injetar seu c\u00f3digo no servidor, obter controle total sobre a loja online e redirecionar pagamentos. As vulnerabilidades foram corrigidas<\/a><\/noindex> nas vers\u00f5es do Magento 2.3.2, 2.2.9 e 2.1.18, onde um total de 75 problemas relacionados \u00e0 seguran\u00e7a foram corrigidos.<\/p>\n

Um dos problemas permite que um usu\u00e1rio n\u00e3o autenticado consiga inserir c\u00f3digo JavaScript (XSS), que pode ser executado ao visualizar o registro de compras canceladas na interface do administrador. A ess\u00eancia da vulnerabilidade est\u00e1 na possibilidade de contornar a opera\u00e7\u00e3o de limpeza de texto utilizando a fun\u00e7\u00e3o escapeHtmlWithLinks() ao processar a anota\u00e7\u00e3o no formul\u00e1rio de cancelamento na tela de in\u00edcio do checkout (usando uma tag «a href=http:\/\/onmouseover=…»). O problema se manifesta ao usar o m\u00f3dulo integrado Authorize.Net, que \u00e9 utilizado para processamento de pagamentos com cart\u00e3o de cr\u00e9dito.<\/p>\n

Para obter controle total atrav\u00e9s de c\u00f3digo JavaScript no contexto da sess\u00e3o atual do funcion\u00e1rio da loja, uma segunda vulnerabilidade \u00e9 explorada, permitindo o upload de um arquivo phar disfar\u00e7ado de imagem (realiza\u00e7\u00e3o<\/a><\/noindex> ataques<\/a><\/noindex> «Deserializa\u00e7\u00e3o de Phar»). Um arquivo Phar pode ser carregado atrav\u00e9s do formul\u00e1rio de inser\u00e7\u00e3o de imagens no editor WYSIWYG integrado. Conseguindo executar seu c\u00f3digo PHP, o atacante pode ent\u00e3o alterar os detalhes do pagamento ou organizar a intercepta\u00e7\u00e3o das informa\u00e7\u00f5es dos cart\u00f5es de cr\u00e9dito dos clientes. <\/p>\n

Curiosamente, informa\u00e7\u00f5es sobre o problema de XSS foram enviadas aos desenvolvedores do Magento em setembro de 2018, ap\u00f3s o que, no final de novembro, um patch foi lan\u00e7ado, que, como se viu, corrige apenas um dos casos particulares e pode ser facilmente contornado. Em janeiro, foi relatada adicionalmente a possibilidade de upload de arquivos Phar disfar\u00e7ados como imagens e demonstrado como a combina\u00e7\u00e3o de duas vulnerabilidades pode ser usada para comprometer lojas online. No final de mar\u00e7o, no Magento 2.3.1,
\n2.2.8 e 2.1.17, o problema com arquivos Phar foi corrigido, mas a corre\u00e7\u00e3o do XSS foi esquecida, embora o ticket sobre o problema tenha sido fechado. Em abril, a an\u00e1lise do XSS foi reiniciada e o problema foi corrigido nas vers\u00f5es 2.3.2, 2.2.9 e 2.1.18. <\/p>\n

\u00c9 importante notar que nas vers\u00f5es mencionadas, 75 vulnerabilidades foram corrigidas, sendo 16 delas classificadas como cr\u00edticas, e 20 problemas podem levar \u00e0 execu\u00e7\u00e3o de c\u00f3digo PHP ou \u00e0 inje\u00e7\u00e3o de opera\u00e7\u00f5es SQL. A maioria das quest\u00f5es cr\u00edticas pode ser explorada apenas por um usu\u00e1rio autenticado, mas como mostrado acima, a execu\u00e7\u00e3o de opera\u00e7\u00f5es autenticadas n\u00e3o \u00e9 dif\u00edcil de alcan\u00e7ar por meio de vulnerabilidades XSS, das quais v\u00e1rias dezenas foram corrigidas nas vers\u00f5es mencionadas.<\/p>\n

<\/a><\/noindex><\/p>\n

Fonte: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0435 \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043d\u043d\u043e\u0439 \u043a\u043e\u043c\u043c\u0435\u0440\u0446\u0438\u0438 Magento, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0437\u0430\u043d\u0438\u043c\u0430\u0435\u0442 \u043e\u043a\u043e\u043b\u043e 20% \u0440\u044b\u043d\u043a\u0430 \u0441\u0438\u0441\u0442\u0435\u043c \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442-\u043c\u0430\u0433\u0430\u0437\u0438\u043d\u043e\u0432, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u043c\u0431\u0438\u043d\u0430\u0446\u0438\u044f \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 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