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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-20375] Crash when calling objects with manipulated __proto__</title>
                <link>https://jira.mongodb.org/browse/SERVER-20375</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;It is possible to get and set arbitrary C++ pointers in private fields on JS objects. It is possible to create an object which appears to be a type which had a field set, but wasn&apos;t created as such. Using functions on it which access these fields can result in a crash.&lt;/p&gt;</description>
                <environment></environment>
        <key id="229350">SERVER-20375</key>
            <summary>Crash when calling objects with manipulated __proto__</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="9">Done</resolution>
                                        <assignee username="mira.carey@mongodb.com">Mira Carey</assignee>
                                    <reporter username="spencer.jackson@mongodb.com">Spencer Jackson</reporter>
                        <labels>
                            <label>spidermonkey</label>
                    </labels>
                <created>Fri, 11 Sep 2015 15:38:22 +0000</created>
                <updated>Wed, 7 Oct 2015 21:35:56 +0000</updated>
                            <resolved>Fri, 18 Sep 2015 14:55:07 +0000</resolved>
                                    <version>3.1.7</version>
                                    <fixVersion>3.1.9</fixVersion>
                                    <component>JavaScript</component>
                                        <votes>0</votes>
                                    <watches>6</watches>
                                                                                                                <comments>
                            <comment id="1033858" author="xgen-internal-githook" created="Fri, 18 Sep 2015 00:48:01 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;hanumantmk&apos;, u&apos;name&apos;: u&apos;Jason Carey&apos;, u&apos;email&apos;: u&apos;jcarey@argv.me&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20375&quot; title=&quot;Crash when calling objects with manipulated __proto__&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20375&quot;&gt;&lt;del&gt;SERVER-20375&lt;/del&gt;&lt;/a&gt; Constrain JS method thisv&lt;/p&gt;

&lt;p&gt;This constrains universal access to wraptype methods by providing a&lt;br/&gt;
JS_ATTACH_JS_CONSTRAINED_METHOD() macro which allows for a list of types&lt;br/&gt;
that are allowed to call said method.&lt;/p&gt;

&lt;p&gt;In this way we can lock down all methods without having to add uasserts&lt;br/&gt;
to each individual method body.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/041e4fe737342bf40a6aedb7a04d8d99ba20e213&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/041e4fe737342bf40a6aedb7a04d8d99ba20e213&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1027942" author="spencer.jackson@10gen.com" created="Fri, 11 Sep 2015 21:17:24 +0000"  >&lt;p&gt;I&apos;ve identified some more cases, which I&apos;ve added to the attached js file.&lt;/p&gt;</comment>
                    </comments>
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                            <attachment id="90061" name="SERVER-20375.js" size="1319" author="spencer.jackson@mongodb.com" created="Tue, 15 Sep 2015 22:08:20 +0000"/>
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