{"id":33301,"date":"2019-10-31T21:51:51","date_gmt":"2019-10-31T18:51:51","guid":{"rendered":"https:\/\/prohoster.info\/blog\/docker-obrazy-alpine-postavlyalis-s-pustym-parolem-polzovatelya-root\/"},"modified":"2019-10-31T21:51:51","modified_gmt":"2019-10-31T18:51:51","slug":"docker-obrazy-alpine-postavlyalis-s-pustym-parolem-polzovatelya-root","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/docker-obrazy-alpine-postavlyalis-s-pustym-parolem-polzovatelya-root","title":{"rendered":"As imagens Docker Alpine foram entregues com a senha do usu\u00e1rio root em branco.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Pesquisadores de seguran\u00e7a da Cisco revelaram<\/a><\/noindex> informa\u00e7\u00f5es sobre a vulnerabilidade (CVE-2019-5021) em para Ubuntu 16.04 e 18.04.<\/a><\/noindex> distribui\u00e7\u00e3o Alpine para o sistema de isolamento de cont\u00eaineres Docker. O cerne do problema identificado \u00e9 que a senha padr\u00e3o para o usu\u00e1rio root foi definida como vazio sem impedir o acesso direto como root. Lembramos que o Alpine \u00e9 usado para criar as imagens oficiais do projeto Docker (antes, as compila\u00e7\u00f5es oficiais eram baseadas no Ubuntu, mas depois foram foram transferidas<\/a><\/noindex> na Alpine).<\/p>\n

O problema aparece a partir da vers\u00e3o 3.3 do Alpine Docker e foi causado por uma altera\u00e7\u00e3o regressiva adicionada em 2015 (antes da vers\u00e3o 3.3, a linha no \/etc\/shadow era «root:!::0:::::», e ap\u00f3s a descontinua\u00e7\u00e3o do uso da flag «-d», a linha «root:::0:::::» come\u00e7ou a ser adicionada). O problema foi inicialmente identificado e foi corrigido<\/a><\/noindex> em novembro de 2015, mas em dezembro foi acidentalmente inclu\u00eddo novamente surgiu<\/a><\/noindex> nos arquivos de compila\u00e7\u00e3o da vers\u00e3o experimental e, em seguida, foi transferido para as compila\u00e7\u00f5es est\u00e1veis.<\/p>\n

As informa\u00e7\u00f5es sobre a vulnerabilidade indicam que o problema tamb\u00e9m se manifesta na \u00faltima vers\u00e3o do Alpine Docker 3.9. Os desenvolvedores do Alpine, em mar\u00e7o, lan\u00e7amos<\/a><\/noindex> corrigiram e a vulnerabilidade n\u00e3o se manifesta<\/a><\/noindex> a partir das compila\u00e7\u00f5es 3.9.2, 3.8.4, 3.7.3 e 3.6.5, mas permanece nas vers\u00f5es mais antigas 3.4.x e 3.5.x, cujo suporte j\u00e1 foi descontinuado. Al\u00e9m disso, os desenvolvedores afirmam que o vetor de ataque \u00e9 bastante limitado e requer que o atacante tenha acesso \u00e0 mesma infraestrutura.<\/p>\n

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

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

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