{"id":239558,"date":"2022-04-12T08:41:58","date_gmt":"2022-04-12T00:41:58","guid":{"rendered":"https:\/\/lrxjmw.cn\/?p=239558"},"modified":"2022-04-02T12:10:28","modified_gmt":"2022-04-02T04:10:28","slug":"linux-denied-su","status":"publish","type":"post","link":"https:\/\/lrxjmw.cn\/linux-denied-su.html","title":{"rendered":"Linux\u4e2d\u5982\u4f55\u7981\u6b62\u666e\u901a\u7528\u6237\u4f7f\u7528su\u547d\u4ee4"},"content":{"rendered":"<table>\n<tbody>\n<tr>\n<td style=\"padding: 5px 12px; width: 25px; font-size: 22px; text-align: center; background: #E8E8E8; line-height: 30px; color: #999;\">\u5bfc\u8bfb<\/td>\n<td style=\"padding: 10px 10px 12px; line-height: 20px;\"><strong>su \u547d\u4ee4\u662f\u4e00\u4e2a\u7279\u6b8a\u7684\u547d\u4ee4\uff0c\u5b83\u5141\u8bb8\u7528\u6237\u4ee5\u53e6\u4e00\u4e2a\u7528\u6237\u548c\u7ec4\u7684\u8eab\u4efd\u8fd0\u884c\u547d\u4ee4\u3002\u5b83\u8fd8\u5141\u8bb8\u4f60\u5207\u6362\u5230 root  \u5e10\u6237\u6216\u53e6\u4e00\u4e2a\u6307\u5b9a\u7684\u7528\u6237\u5e10\u6237\u3002<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8981\u5207\u6362\u5230\u53e6\u4e00\u4e2a\u7528\u6237\u5e10\u6237\uff0c\u7528\u6237\u53ef\u4ee5\u4ece\u4ed6\u4eec\u5f53\u524d\u7684\u767b\u5f55\u4f1a\u8bdd\u4e2d\u8fd0\u884c su \u547d\u4ee4\uff0c\u5982\u4e0b\u6240\u793a\uff0c\u7528\u6237\u53ef\u4ee5\u901a\u8fc7su\u5207\u6362\u7528\u6237\uff1a<\/p>\n<pre>\r\n[bob@localhost ~]$ su - user01\r\nPassword:\r\n<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image1-5.png\" alt=\"\" width=\"345\" height=\"77\" class=\"alignnone size-full wp-image-239560\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image1-5.png 345w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image1-5-300x67.png 300w\" sizes=\"auto, (max-width: 345px) 100vw, 345px\" \/><br \/>\n\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6240\u6709\u7528\u6237\u90fd\u53ef\u4ee5\u4f7f\u7528 su \u547d\u4ee4\u3002\u6211\u4eec\u53ef\u4ee5\u5728<code>\/etc\/sudoers<\/code>\u4e2d\u7981\u7528<code>su<\/code>\u547d\u4ee4\u3002<\/p>\n<p>\u82e5\u8981\u5207\u6362\u5230 root \u5e10\u6237\uff0c\u7528\u6237\u5fc5\u987b\u5177\u6709 root \u5bc6\u7801\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u7528\u6237\u6b63\u5728\u5207\u6362\u5230 root \u5e10\u6237\u3002<\/p>\n<pre>\r\n[user01@localhost ~]$ su -\r\nPassword:\r\n<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image2-5.png\" alt=\"\" width=\"494\" height=\"92\" class=\"alignnone size-full wp-image-239561\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image2-5.png 494w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image2-5-300x56.png 300w\" sizes=\"auto, (max-width: 494px) 100vw, 494px\" \/><\/p>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>\u7981\u7528\u666e\u901a\u7528\u6237\u7684su\u8bbf\u95ee<\/strong><\/div>\n<p>\u7981\u7528\u666e\u901a\u7528\u6237\u7684 su \u8bbf\u95ee\u6743\u9650\uff0c\u9996\u5148\uff0c\u5907\u4efd\u4ee5\u4e0b<code>\/etc\/sudoers<\/code>\u7684\u539f\u59cb\u6587\u4ef6\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>\r\n[bob@localhost ~]$ sudo cp -p \/etc\/sudoers \/etc\/sudoers.back\r\n[sudo] password for bob:\r\n<\/pre>\n<p>\u4f7f\u7528<code>visudo<\/code>\u547d\u4ee4\u6253\u5f00sudoers\u914d\u7f6e\u6587\u4ef6<\/p>\n<pre>\r\n[bob@localhost ~]$ sudo visudo\r\n<\/pre>\n<p>\u5728<code>## Command Aliases<\/code>\u90e8\u5206\u4e0b\u9762\u6dfb\u52a0\u5982\u4e0b\u884c\uff1a<\/p>\n<pre>\r\nCmnd_Alias DISABLE_SU = \/usr\/bin\/su\r\n<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image3-6.png\" alt=\"\" width=\"885\" height=\"370\" class=\"alignnone size-full wp-image-239562\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image3-6.png 885w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image3-6-300x125.png 300w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image3-6-768x321.png 768w\" sizes=\"auto, (max-width: 885px) 100vw, 885px\" \/><br \/>\n\u7136\u540e\u5728\u6587\u4ef6\u672b\u5c3e\u6dfb\u52a0\u4ee5\u4e0b\u884c\uff0c\u5c06\u7528\u6237\u540d bob\u66ff\u6362\u4e3a\u9700\u8981\u7981\u7528 su \u8bbf\u95ee\u6743\u9650\u7684\u7528\u6237\uff1a<\/p>\n<pre>\r\nbob ALL=(ALL) NOPASSWD: ALL, !DISABLE_SU\r\n<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image4-6.png\" alt=\"\" width=\"684\" height=\"91\" class=\"alignnone size-full wp-image-239563\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image4-6.png 684w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image4-6-300x40.png 300w\" sizes=\"auto, (max-width: 684px) 100vw, 684px\" \/><br \/>\n\u4fdd\u5b58\u9000\u51fa<\/p>\n<p>\u4f7f\u7528bob\u7528\u6237\u9a8c\u8bc1\u4e00\u4e0b\u3002\u7cfb\u7edf\u5e94\u8fd4\u56de\u5982\u4e0b\u9519\u8bef\u6d88\u606f \"Sorry, user bob is not allowed to execute '\/bin\/su - user01' as root on localhost.localdomain.\"<\/p>\n<pre>\r\n[bob@localhost ~]$ sudo su - user01\r\nSorry, user bob is not allowed to execute '\/bin\/su - user01' as root on localhost.localdomain.\r\n<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image5-5.png\" alt=\"\" width=\"830\" height=\"64\" class=\"alignnone size-full wp-image-239565\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image5-5.png 830w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image5-5-300x23.png 300w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image5-5-768x59.png 768w\" sizes=\"auto, (max-width: 830px) 100vw, 830px\" \/><\/p>\n<div   id="j6sjwn9j3u"    style=\"font-size: 14pt; color: white; background-color: black; border-left: red 10px solid; padding-left: 14px; margin-bottom: 20px; margin-top: 20px;\"><strong>\u7981\u7528\u7528\u6237\u7ec4\u7684su\u8bbf\u95ee<\/strong><\/div>\n<p>\u8fd8\u53ef\u4ee5\u7981\u7528\u7528\u6237\u7ec4\u7684 su \u8bbf\u95ee\u6743\u9650\u3002\u4f8b\u5982\uff0c\u8981\u7981\u7528\u7ec4 wheel \u4e2d\u6240\u6709\u7528\u6237\u7684 su \u8bbf\u95ee\u6743\u9650\uff0c\u53ef\u4ee5\u6267\u884c\u4e0b\u9762\u547d\u4ee4\uff1a<\/p>\n<pre>\r\n[bob@localhost ~]$ sudo visudo\r\n\r\n%wheel ALL=(ALL) ALL, !DISABLE_SU\r\n<\/pre>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image6-5.png\" alt=\"\" width=\"593\" height=\"224\" class=\"alignnone size-full wp-image-239559\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image6-5.png 593w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2022\/03\/image6-5-300x113.png 300w\" sizes=\"auto, (max-width: 593px) 100vw, 593px\" \/><br \/>\n\u4fdd\u5b58\u9000\u51fa\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8981\u5207\u6362\u5230\u53e6\u4e00\u4e2a\u7528\u6237\u5e10\u6237\uff0c\u7528\u6237\u53ef\u4ee5\u4ece\u4ed6\u4eec\u5f53\u524d\u7684\u767b\u5f55\u4f1a\u8bdd\u4e2d\u8fd0\u884c su \u547d\u4ee4\uff0c\u5982\u4e0b\u6240\u793a\uff0c\u7528\u6237\u53ef\u4ee5\u901a\u8fc7su\u5207\u6362\u7528\u6237\uff1a  [&hellip;]<\/p>\n","protected":false},"author":309,"featured_media":239564,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-239558","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/239558","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/309"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=239558"}],"version-history":[{"count":3,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/239558\/revisions"}],"predecessor-version":[{"id":239568,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/239558\/revisions\/239568"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/239564"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=239558"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=239558"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=239558"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}