{"id":4032,"date":"2021-06-12T20:09:32","date_gmt":"2021-06-12T12:09:32","guid":{"rendered":"http:\/\/blog.ywdevops.cn\/?p=4032"},"modified":"2021-06-12T20:09:33","modified_gmt":"2021-06-12T12:09:33","slug":"linux-6","status":"publish","type":"post","link":"https:\/\/blog.ywdevops.cn\/index.php\/2021\/06\/12\/linux-6\/","title":{"rendered":"linux\u4e2dsuid\u548csgid\u8be6\u89e3"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>SUID\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SUID\u662fSet UID\u7684\u7b80\u79f0\uff0c\u7ffb\u8bd1\u8fc7\u6765\u662f\u8bbe\u7f6e\u7528\u6237ID\uff0c\u5b83\u4f1a\u51fa\u73b0\u5728\u6587\u4ef6\u62e5\u6709\u8005\u6743\u9650\u7684\u6267\u884c\u4f4d\u4e0a\uff0c\u5177\u6709\u8fd9\u79cd\u6743\u9650\u7684\u6587\u4ef6\u4f1a\u5728\u5176\u6267\u884c\u65f6\uff0c\u4f7f\u8c03\u7528\u8005\u6682\u65f6\u83b7\u5f97\u8be5\u6587\u4ef6\u62e5\u6709\u8005\u7684\u6743\u9650 <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a\u67e5\u770b\/usr\/bin\/passwd\u4e8c\u8fdb\u5236\u6587\u4ef6\u7684\u6743\u9650\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"555\" height=\"142\" src=\"http:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/1-4.png\" alt=\"\" class=\"wp-image-4034\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/1-4.png 555w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/1-4-300x77.png 300w\" sizes=\"auto, (max-width: 555px) 100vw, 555px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0a\u56fe\u4e2d\u7684\u7528\u6237\u6743\u9650\u7ec4\u4e2d\u7684\u53ef\u6267\u884c\u6743\u9650(x)\u88abs\u66ff\u6362\uff0c\u6b64\u65f6passwd\u8fd9\u4e2a\u7a0b\u5e8f\u5177\u5907suid\u6743\u9650\uff0c\u65e0\u8bba\u54ea\u4e2a\u7528\u6237\u90fd\u6709\u6743\u9650\u6267\u884cpasswd\uff0c\u5728\u6267\u884cpasswd\u7684\u65f6\u5019\uff0c\u4f1a\u4e34\u65f6\u83b7\u5f97\u6587\u4ef6\u6240\u6709\u8005\u7684\u6743\u9650\uff0c<strong>\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u6bcf\u4e2a\u7528\u6237\u90fd\u53ef\u4ee5\u8c03\u7528passwd\u547d\u4ee4\u6765\u4fee\u6539\u81ea\u5df1\u7684\u5bc6\u7801<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528SUID\u9700\u8981\u6ee1\u8db3\u4ee5\u4e0b\u51e0\u4e2a\u6761\u4ef6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>SUID\u53ea\u5bf9<strong>\u4e8c\u8fdb\u5236\u6587\u4ef6<\/strong>\u6709\u6548<\/li><li>\u8c03\u7528\u8005\u5bf9\u8be5\u6587\u4ef6\u6709\u6267\u884c\u6743<\/li><li>\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u8c03\u7528\u8005\u4f1a\u6682\u65f6\u83b7\u5f97\u8be5\u6587\u4ef6\u7684\u6240\u6709\u8005\u6743\u9650<\/li><li>\u8be5\u6743\u9650\u53ea\u5728\u7a0b\u5e8f\u6267\u884c\u7684\u8fc7\u7a0b\u4e2d\u6709\u6548 <\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u7531\u4e8e<strong>SUID\u53ea\u5bf9\u4e8c\u8fdb\u5236\u6587\u4ef6\u6709\u6548<\/strong>\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u9700\u8981\u5c06\u8981\u8bbe\u7f6e\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\u8d4b\u4e88SUID\u6743\u9650\uff0c\u6b64\u65f6\u5176\u4ed6\u7528\u6237\u5373\u5177\u5907\u4e86\u6267\u884c\u6b64\u6587\u4ef6\u7684\u6743\u9650<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8d4b\u4e88SUID\u6743\u9650\u7684\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>chmod u+s  \/usr\/bin\/passwd<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a\u666e\u901a\u7528\u6237\u65e0\u6cd5\u6267\u884c\u6253\u5f00\u548c\u5173\u95ed\u9632\u706b\u5899\u7684\u547d\u4ee4\uff0c\u6b64\u65f6\u6211\u4eec\u7ed9\u4e88systemctl\u6587\u4ef6\u8d4b\u4e88SUID\u6743\u9650\uff0c\u7136\u540e\u5728\u666e\u901a\u7528\u6237\u4e0b\u6267\u884c\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"552\" height=\"133\" src=\"http:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/1-5.png\" alt=\"\" class=\"wp-image-4043\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/1-5.png 552w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/1-5-300x72.png 300w\" sizes=\"auto, (max-width: 552px) 100vw, 552px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u666e\u901a\u7528\u6237\u4e0b\u6267\u884c\u5f00\u542f\u9632\u706b\u5899\u547d\u4ee4\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"553\" height=\"188\" src=\"http:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/2-2.png\" alt=\"\" class=\"wp-image-4044\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/2-2.png 553w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/2-2-300x102.png 300w\" sizes=\"auto, (max-width: 553px) 100vw, 553px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>SGID\uff1a<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SGID\u5373Set GID\u7684\u7f29\u5199\uff0c\u5b83\u51fa\u73b0\u5728\u6587\u4ef6<strong>\u6240\u5c5e\u7ec4\u6743\u9650\u7684\u6267\u884c\u4f4d<\/strong>\u4e0a\u9762\uff0c\u5b83\u5bf9<strong>\u666e\u901a\u4e8c\u8fdb\u5236\u6587\u4ef6\u548c\u76ee\u5f55\u90fd\u6709\u6548<\/strong>\uff0c \u5f53\u5b83\u4f5c\u7528\u4e8e\u666e\u901a\u6587\u4ef6\u65f6\uff0c\u548cSUID\u7c7b\u4f3c\uff0c\u5728\u6267\u884c\u8be5\u6587\u4ef6\u65f6\uff0c\u7528\u6237\u5c06\u83b7\u5f97\u8be5\u6587\u4ef6\u6240\u5c5e\u7ec4\u7684\u6743\u9650\u3002\u5f53SGID\u4f5c\u7528\u4e8e\u76ee\u5f55\u65f6\uff0c\u610f\u4e49\u5c31\u975e\u5e38\u91cd\u5927\u4e86\u3002\u5f53\u7528\u6237\u5bf9\u67d0\u4e00\u76ee\u5f55\u6709\u5199\u548c\u6267\u884c\u6743\u9650\u65f6\uff0c\u8be5\u7528\u6237\u5c31\u53ef\u4ee5\u5728\u8be5\u76ee\u5f55\u4e0b\u5efa\u7acb\u6587\u4ef6\uff0c<strong>\u5982\u679c\u8be5\u76ee\u5f55\u7528SGID\u4fee\u9970\uff0c\u5219\u8be5\u7528\u6237\u5728\u8fd9\u4e2a\u76ee\u5f55\u4e0b\u5efa\u7acb\u7684\u6587\u4ef6\u90fd\u662f\u5c5e\u4e8e\u8fd9\u4e2a\u76ee\u5f55\u6240\u5c5e\u7684\u7ec4<\/strong>\u3002 <\/p>\n\n\n\n<p class=\"has-background has-luminous-vivid-amber-background-color wp-block-paragraph\">\u6ce8\u610f\uff1a\u901a\u5e38\u60c5\u51b5\u4e0bSGID\u53ea\u7528\u6765\u8bbe\u7f6e\u76ee\u5f55\u6743\u9650<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a\u4fee\u6539\/tmp\u76ee\u5f55\u7684\u6587\u4ef6\u5939\u6743\u9650\u4e3aSGID\uff0c\u7136\u540e\u901a\u8fc7\u666e\u901a\u7528\u6237\u5728\u8be5\u76ee\u5f55\u4e0b\u521b\u5efa\u6587\u4ef6\uff0c\u5982\u56fe\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"559\" height=\"401\" src=\"http:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/3-1.png\" alt=\"\" class=\"wp-image-4047\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/3-1.png 559w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/3-1-300x215.png 300w\" sizes=\"auto, (max-width: 559px) 100vw, 559px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"568\" height=\"202\" src=\"http:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/4.png\" alt=\"\" class=\"wp-image-4048\" srcset=\"https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/4.png 568w, https:\/\/blog.ywdevops.cn\/wp-content\/uploads\/2021\/06\/4-300x107.png 300w\" sizes=\"auto, (max-width: 568px) 100vw, 568px\" \/><\/figure>\n\n\n\n<p class=\"has-background has-luminous-vivid-amber-background-color wp-block-paragraph\">\u4ece\u4e0a\u9762\u53ef\u4ee5\u770b\u51fa\uff0c\u5728\u666e\u901a\u7528\u6237\u4e0b\u521b\u5efa\u6587\u4ef6abcd\uff0c\u53ef\u4ee5\u770b\u51fa\u6587\u4ef6\u7684\u5c5e\u7ec4\u7ee7\u627f\u7684\u5f53\u524d\/tmp\u7684\u5c5e\u7ec4\uff0c\u4e3aroot\uff0c\u5982\u679c\u4e0d\u8bbe\u7f6eSGID\uff0c\u90a3\u4e48abcd\u6587\u4ef6\u7684\u5c5e\u4e3b\u548c\u5c5e\u7ec4\u90fd\u4e3aadmin_app<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\uff1aSUID\u548cSGID\u90fd\u662f\u9ad8\u5371\u64cd\u4f5c\uff0c\u4f7f\u7528\u8981\u614e\u91cd<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SUID\uff1a SUID\u662fSet UID\u7684\u7b80\u79f0\uff0c\u7ffb\u8bd1\u8fc7\u6765\u662f\u8bbe\u7f6e\u7528\u6237ID\uff0c\u5b83\u4f1a\u51fa\u73b0\u5728\u6587\u4ef6\u62e5\u6709\u8005\u6743\u9650\u7684\u6267\u884c\u4f4d\u4e0a\uff0c\u5177\u6709\u8fd9 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":4050,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34,22],"tags":[],"class_list":["post-4032","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux","category-server"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"_links":{"self":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/4032","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/comments?post=4032"}],"version-history":[{"count":5,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/4032\/revisions"}],"predecessor-version":[{"id":4049,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/posts\/4032\/revisions\/4049"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/media\/4050"}],"wp:attachment":[{"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/media?parent=4032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/categories?post=4032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.ywdevops.cn\/index.php\/wp-json\/wp\/v2\/tags?post=4032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}