{"id":7119,"date":"2014-09-25T08:18:16","date_gmt":"2014-09-25T14:18:16","guid":{"rendered":"https:\/\/www.siteground.com\/blog\/?p=7119"},"modified":"2025-09-18T14:49:21","modified_gmt":"2025-09-18T14:49:21","slug":"major-bash-vulnerability-fixed-on-all-servers","status":"publish","type":"post","link":"https:\/\/www.siteground.com\/blog\/major-bash-vulnerability-fixed-on-all-servers\/","title":{"rendered":"Major Bash Vulnerability Fixed on All Servers"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-7123\" src=\"https:\/\/newblog.siteground.com\/en\/wp-content\/uploads\/sites\/2\/2015\/09\/bash.jpg\" alt=\"bash\" width=\"540\" height=\"181\"><\/p>\n<p>A major security flaw was discovered in the most popular shell (Bash) which is used by default in many Linux and Unix distributions. A shell is a program that takes your commands (accessing folders, listing files, etc.) that you type and sends&nbsp;them to the operating system to be executed. The Bash vulnerability, also known as Shellshock, allows attackers to issue arbitrary commands via crafted environment variables.<br>\n<!--more--><\/p>\n<p>The bad thing about this specific vulnerability is that it is fairly easy to craft such a request and attack a server. In addition, the vulnerability affects all types of devices and not only web servers &#8211; routers, some mobile devices, Linux computers and even Mac OS X devices are also affected. There is a simple test that will show you if you\u2019re vulnerable. Just run the following command within your shell:<\/p>\n<p><code style=\"padding: 2px;background: #eaeaea\">env X=\"() { :;} ; echo BUSTED\" \/bin\/sh -c \"echo test\"<\/code><\/p>\n<p>If you see the word \u201cBUSTED\u201d echoed back then your Bash version is vulnerable and you have to update.<\/p>\n<p>Now that you\u2019re scared it\u2019s time for the good news. All SiteGround servers were patched in less than 24 hours the vulnerability was announced. In addition, our unique server setup including the special chroot isolation has made it highly unlikely for any attacker to have been able to utilize this vulnerability and gain access to sensitive information even before the patch.<\/p>\n<p>If you have an account on our servers you don\u2019t need to do anything because we\u2019ve got you covered. However, please remember that this vulnerability also affects other devices and not only web servers. If you\u2019re using Linux as your operating system you need to update Bash to the latest available stable version just to make sure that you\u2019re not at risk.<\/p>\n\n\n<p>[subscribe_cta]<\/p>\n","protected":false},"excerpt":{"rendered":"A major security flaw was discovered in the most popular shell (Bash) which is used by default in many Linux and Unix distributions. A shell is a program that takes your commands (accessing folders, listing files, etc.) that you type and sends&nbsp;them to the operating system to be executed. The Bash vulnerability, also known as&hellip;","protected":false},"author":57,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2098,2018,12],"tags":[],"class_list":["post-7119","post","type-post","status-publish","format-standard","hentry","category-hosting-insights","category-product-updates","category-security"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Major Bash Vulnerability Fixed on All Servers : SiteGround Blog<\/title>\n<meta name=\"description\" content=\"A major security flaw was discovered in the most popular shell (Bash) which is used by default in many Linux and Unix distributions. A shell is a program\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/newblog.siteground.com\/en\/major-bash-vulnerability-fixed-on-all-servers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Major Bash Vulnerability Fixed on All Servers\" \/>\n<meta property=\"og:description\" content=\"A major security flaw was discovered in the most popular shell (Bash) which is used by default in many Linux and Unix distributions. A shell is a program\" \/>\n<meta property=\"og:url\" content=\"https:\/\/newblog.siteground.com\/en\/major-bash-vulnerability-fixed-on-all-servers\/\" \/>\n<meta property=\"og:site_name\" content=\"SiteGround\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/siteground\" \/>\n<meta property=\"article:published_time\" content=\"2014-09-25T14:18:16+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-18T14:49:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/newblog.siteground.com\/en\/wp-content\/uploads\/sites\/2\/2015\/09\/bash.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"540\" \/>\n\t<meta property=\"og:image:height\" content=\"181\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Daniel Kanchev\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@siteground\" \/>\n<meta name=\"twitter:site\" content=\"@siteground\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Daniel Kanchev\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/newblog.siteground.com\/en\/major-bash-vulnerability-fixed-on-all-servers\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/newblog.siteground.com\/en\/major-bash-vulnerability-fixed-on-all-servers\/\"},\"author\":{\"name\":\"Daniel Kanchev\",\"@id\":\"https:\/\/newblog.siteground.com\/en\/#\/schema\/person\/380162a677d6c37329e9a12baa334572\"},\"headline\":\"Major Bash Vulnerability Fixed on All Servers\",\"datePublished\":\"2014-09-25T14:18:16+00:00\",\"dateModified\":\"2025-09-18T14:49:21+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/newblog.siteground.com\/en\/major-bash-vulnerability-fixed-on-all-servers\/\"},\"wordCount\":297,\"commentCount\":6,\"publisher\":{\"@id\":\"https:\/\/newblog.siteground.com\/en\/#organization\"},\"image\":{\"@id\":\"https:\/\/newblog.siteground.com\/en\/major-bash-vulnerability-fixed-on-all-servers\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/newblog.siteground.com\/en\/wp-content\/uploads\/sites\/2\/2015\/09\/bash.jpg\",\"articleSection\":[\"Hosting Insights\",\"Product Updates\",\"Security\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/newblog.siteground.com\/en\/major-bash-vulnerability-fixed-on-all-servers\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/newblog.siteground.com\/en\/major-bash-vulnerability-fixed-on-all-servers\/\",\"url\":\"https:\/\/newblog.siteground.com\/en\/major-bash-vulnerability-fixed-on-all-servers\/\",\"name\":\"Major Bash Vulnerability Fixed on All Servers : SiteGround Blog\",\"isPartOf\":{\"@id\":\"https:\/\/newblog.siteground.com\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/newblog.siteground.com\/en\/major-bash-vulnerability-fixed-on-all-servers\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/newblog.siteground.com\/en\/major-bash-vulnerability-fixed-on-all-servers\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/newblog.siteground.com\/en\/wp-content\/uploads\/sites\/2\/2015\/09\/bash.jpg\",\"datePublished\":\"2014-09-25T14:18:16+00:00\",\"dateModified\":\"2025-09-18T14:49:21+00:00\",\"description\":\"A major security flaw was discovered in the most popular shell (Bash) which is used by default in many Linux and Unix distributions. 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