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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-36157] PRNG not cryptographically strong on GCC before 5.5</title>
                <link>https://jira.mongodb.org/browse/SERVER-36157</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Upgrading GCC to version 5.5 fixes a security flaw with PRNG.&lt;/p&gt;

&lt;p&gt;CVSS 2.1&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://www.cvedetails.com/cve/CVE-2017-11671/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://www.cvedetails.com/cve/CVE-2017-11671/&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;&quot;Under certain circumstances, the ix86_expand_builtin function in i386.c in GNU Compiler Collection (GCC) version 4.6, 4.7, 4.8, 4.9, 5 before 5.5, and 6 before 6.4 will generate instruction sequences that clobber the status flag of the RDRAND and RDSEED intrinsics before it can be read, potentially causing failures of these instructions to go unreported. This could potentially lead to less randomness in random number generation. &quot;&lt;/p&gt;</description>
                <environment></environment>
        <key id="572192">SERVER-36157</key>
            <summary>PRNG not cryptographically strong on GCC before 5.5</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="2">Won&apos;t Fix</resolution>
                                        <assignee username="backlog-server-devtools">DO NOT USE - Backlog - Dev Tools</assignee>
                                    <reporter username="davi.ottenheimer">Davi Ottenheimer</reporter>
                        <labels>
                    </labels>
                <created>Mon, 16 Jul 2018 22:02:53 +0000</created>
                <updated>Tue, 6 Dec 2022 19:10:28 +0000</updated>
                            <resolved>Mon, 23 Jul 2018 19:09:14 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="1954083" author="greg.mckeon" created="Mon, 23 Jul 2018 19:09:14 +0000"  >&lt;p&gt;We currently don&apos;t try to generate our own strong random numbers, so we will continue to rely on the OS for this and may consider bumping the toolchain to 5.5, as discussed by &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=acm&quot; class=&quot;user-hover&quot; rel=&quot;acm&quot;&gt;acm&lt;/a&gt; above.&lt;/p&gt;</comment>
                            <comment id="1950553" author="schwerin" created="Wed, 18 Jul 2018 19:25:15 +0000"  >&lt;p&gt;MongoDB doesn&apos;t generate its own secure pseudo-random numbers. It depends on OS-provided facilities such as /dev/urandom. I don&apos;t know if any of the vendored third-party libraries do, but I&apos;d be a little surprised if they did.&lt;/p&gt;</comment>
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