{"id":3393,"date":"2023-02-04T15:48:12","date_gmt":"2023-02-04T10:18:12","guid":{"rendered":"https:\/\/trysiteprice.com\/blog\/?p=3393"},"modified":"2023-02-04T15:48:12","modified_gmt":"2023-02-04T10:18:12","slug":"glibc-ghost-vulnerability-test-to-see-if-a-linux-sever-is-secure","status":"publish","type":"post","link":"https:\/\/trysiteprice.com\/blog\/glibc-ghost-vulnerability-test-to-see-if-a-linux-sever-is-secure\/","title":{"rendered":"Glibc: GHOST Vulnerability Test To See If a Linux Sever Is Secure"},"content":{"rendered":"<p>The GHOST vulnerability is a critical vulnerability that affects the GNU C Library (glibc) versions prior to 2.18. To test if a Linux server is secure and not vulnerable to GHOST, you can use the following command:<\/p>\n<div class=\"bg-black mb-4 rounded-md\">\n<div class=\"flex items-center relative text-gray-200 bg-gray-800 px-4 py-2 text-xs font-sans\"><\/div>\n<div class=\"p-4 overflow-y-auto\"><code class=\"!whitespace-pre hljs language-bash\"><span class=\"hljs-built_in\">env<\/span> <span class=\"hljs-string\">'x=() { :;}; echo vulnerable'<\/span> <span class=\"hljs-string\">'BASH_FUNC_x()=() { :;}; echo vulnerable'<\/span> bash -c <span class=\"hljs-string\">'echo hello'<\/span><br \/>\n<\/code><\/div>\n<\/div>\n<p>If the output of the command contains the string &#8220;vulnerable&#8221;, the system is vulnerable to GHOST. If the output is just &#8220;hello&#8221;, the system is not vulnerable.<\/p>\n<p>It is recommended to upgrade the glibc package to a version later than 2.18 to fix the GHOST vulnerability. The exact steps for upgrading glibc may vary depending on your Linux distribution and the package management system used. Consult the documentation for your specific distribution for more information.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The GHOST vulnerability is a critical vulnerability that affects the GNU C Library (glibc) versions prior to 2.18. To test if a Linux server is secure and not vulnerable to GHOST, you can use the following command: env &#8216;x=() { :;}; echo vulnerable&#8217; &#8216;BASH_FUNC_x()=() { :;}; echo vulnerable&#8217; bash -c &#8216;echo hello&#8217; If the output &#8230; <a title=\"Glibc: GHOST Vulnerability Test To See If a Linux Sever Is Secure\" class=\"read-more\" href=\"https:\/\/trysiteprice.com\/blog\/glibc-ghost-vulnerability-test-to-see-if-a-linux-sever-is-secure\/\" aria-label=\"Read more about Glibc: GHOST Vulnerability Test To See If a Linux Sever Is Secure\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3393","post","type-post","status-publish","format-standard","hentry","category-best-tutorial"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Glibc: GHOST Vulnerability Test To See If a Linux Sever Is Secure - TrySitePrice<\/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:\/\/trysiteprice.com\/blog\/glibc-ghost-vulnerability-test-to-see-if-a-linux-sever-is-secure\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Glibc: GHOST Vulnerability Test To See If a Linux Sever Is Secure - TrySitePrice\" \/>\n<meta property=\"og:description\" content=\"The GHOST vulnerability is a critical vulnerability that affects the GNU C Library (glibc) versions prior to 2.18. To test if a Linux server is secure and not vulnerable to GHOST, you can use the following command: env &#039;x=() { :;}; echo vulnerable&#039; &#039;BASH_FUNC_x()=() { :;}; echo vulnerable&#039; bash -c &#039;echo hello&#039; If the output ... 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