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<meta name="description" content=" Singularity 2.2.1 Security Release Feb 14, 2017 / For the full release announcement and downloads, please see the release on Github.This release includes a fix for a Moderate Severity security issue, and other improvements to version 2.2.Security information:In versions of Singularity previous to 2.2.1, it was possible for a malicious user to create and manipulate specifically crafted raw devices within containers they own. Utilizing MS_NODEV as a container image mount option mitigates this potential vector of attack. As a result, this update should be implemented with high urgency. A big thanks to Mattias Wadenstein (@UMU in Sweden) for identifying and reporting this issue!Other improvements: Fixed some leaky file descriptors Cleaned up *printf() usage Catch if user’s group is not properly definedPlease report any additional bugs as issues.Thank you! Please enable JavaScript to view the comments powered by Disqus. Site last generated: Jul 26, 2017 ">
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<h1 class="post-title" itemprop="name headline">Singularity 2.2.1 Security Release</h1>
<p class="post-meta"><time datetime="2017-02-14T00:00:00-05:00" itemprop="datePublished">Feb 14, 2017</time> /
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<p>For the full release announcement and downloads, please see <a target="_blank" href="https://github.com/singularityware/singularity/releases/tag/2.2.1">the release on Github</a>.</p>
<p>This release includes a fix for a Moderate Severity security issue, and other improvements to version 2.2.</p>
<h2 id="security-information">Security information:</h2>
<p>In versions of Singularity previous to 2.2.1, it was possible for a malicious user to create and manipulate specifically crafted raw devices within containers they own. Utilizing <code class="highlighter-rouge">MS_NODEV</code> as a container image mount option mitigates this potential vector of attack. As a result, this update should be implemented with high urgency. A big thanks to Mattias Wadenstein (@UMU in Sweden) for identifying and reporting this issue!</p>
<h3 id="other-improvements">Other improvements:</h3>
<ul>
<li>Fixed some leaky file descriptors</li>
<li>Cleaned up <code class="highlighter-rouge">*printf()</code> usage</li>
<li>Catch if user’s group is not properly defined</li>
</ul>
<p>Please report any additional bugs <a href="https://github.com/singularityware/singularity/issues/new" target="_blank">as issues</a>.</p>
<p>Thank you!</p>
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