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class="sidebarItem"><a class="sidebarItemLink" href="/blog/tags/community">Meet the Community</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><meta itemprop="description" content="UPDATE: mitigation instructions have been improved (don't update openswan) and we forgot to mention rebooting."><header><h1 class="title_f1Hy" itemprop="headline">CloudStack and the "Ghost" glibc vulnerability</h1><div class="container_mt6G margin-vert--md"><time datetime="2015-01-28T00:00:00.000Z" itemprop="datePublished">January 28, 2015</time></div></header><div id="__blog-post-container" class="markdown" itemprop="articleBody"><b>UPDATE: mitigation instructions have been improved (don't update openswan) and we forgot to mention rebooting.</b><br><b>UPDATE: Links to updated System VM templates are now below</b><br><br><p>Yesterday, a buffer overflow vulnerability was announced in glibc that affects most current Linux distributions. In CloudStack, the system VMs contain a vulnerable version of glibc. </p><p>CloudStack community members have built an updated system VM template, which ShapeBlue is hosting at <a href="http://packages.shapeblue.com/systemvmtemplate/" target="_blank" rel="noopener noreferrer">http://packages.shapeblue.com/systemvmtemplate/</a> (More information on the packages at <a href="http://shapeblue.com/packages" target="_blank" rel="noopener noreferrer">http://shapeblue.com/packages</a>). </p><p>For instructions on how to update the SystemVM template in CloudStack, see <a href="http://support.citrix.com/article/CTX200024" target="_blank" rel="noopener noreferrer">here</a>.</p><p>For those who wish to patch their running system VMs, ssh into each one and run:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">apt-mark hold openswan apt-get clean apt-get update && apt-get upgrade</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>After updating glibc, the system will need to be rebooted.</p><p>Information about how to connect to your System VMs is available <a href="https://cloudstack.apache.org/docs/en-US/Apache_CloudStack/4.2.0/html/Admin_Guide/accessing-system-vms.html" target="_blank" rel="noopener noreferrer">here</a>.</p><h2>Other CloudStack-related systems may be affected!</h2><p>Please review security updates from Linux distributions you use on your management server, storage systems, hypervisors, as well as other Linux VMs and bare-metal systems running in your environments. <a href="http://www.cyberciti.biz/faq/cve-2015-0235-patch-ghost-on-debian-ubuntu-fedora-centos-rhel-linux/" target="_blank" rel="noopener noreferrer">This post</a> provides instructions for determining if a system is vulnerable, as well as patching directions for common Linux distributions.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/blog/tags/announcement">announcement</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/apache/cloudstack-www/tree/main/blog/2015-01-28-cloudstack_and_the_ghost_glibc.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/blog/cloudstack_and_openssl_cve_2015"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">CloudStack and OpenSSL CVE-2015-1793</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/blog/announce_announcing_apache_cloudstack_4"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">[ANNOUNCE] Announcing Apache CloudStack 4.3.2</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="footer__bottom text--center"><div class="margin-bottom--sm"><a href="https://cloudstack.apache.org/" rel="noopener noreferrer" class="footerLogoLink_BH7S"><img src="/img/ACS_logo_slogan.svg" alt="Apache CloudStack logo" class="themedImage_ToTc themedImage--light_HNdA footer__logo"><img src="/img/ACS_logo_slogan.svg" alt="Apache CloudStack logo" class="themedImage_ToTc themedImage--dark_i4oU footer__logo"></a></div><div class="footer__copyright"> |
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