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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-4692] Read-only users should be denied access to system.users collection</title>
                <link>https://jira.mongodb.org/browse/SERVER-4692</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Original Title: system.users collection placement allows offline dictionary attack for read-only users&lt;/p&gt;

&lt;p&gt;When using authentication with mongodb, users with read-write permissions have their password hashes stored in system.users. Read-only users can read these hashes. This permits read-only users to read the password hashes of read/write users and perform an offline dictionary attack in order to escalate their privileges.&lt;/p&gt;</description>
                <environment></environment>
        <key id="28410">SERVER-4692</key>
            <summary>Read-only users should be denied access to system.users collection</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="2" iconUrl="https://jira.mongodb.org/images/icons/priorities/critical.svg">Critical - P2</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="mathias@mongodb.com">Mathias Stearn</assignee>
                                    <reporter username="npmccallum">Nathaniel McCallum</reporter>
                        <labels>
                            <label>security</label>
                    </labels>
                <created>Mon, 16 Jan 2012 19:25:43 +0000</created>
                <updated>Fri, 30 Oct 2015 14:45:17 +0000</updated>
                            <resolved>Fri, 9 Mar 2012 00:51:44 +0000</resolved>
                                    <version>2.0.2</version>
                                    <fixVersion>2.1.1</fixVersion>
                                    <component>Security</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="97037" author="auto" created="Fri, 9 Mar 2012 00:50:15 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;redbeard0531@gmail.com&apos;}
&lt;p&gt;Message: Don&apos;t allow read-only users to read from system.users collection &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4692&quot; title=&quot;Read-only users should be denied access to system.users collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4692&quot;&gt;&lt;del&gt;SERVER-4692&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/1afdf32715eeaac5c287b25db7ea016ceaa44380&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/1afdf32715eeaac5c287b25db7ea016ceaa44380&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="97035" author="auto" created="Fri, 9 Mar 2012 00:50:12 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;redbeard0531@gmail.com&apos;}
&lt;p&gt;Message: fix broken bits in reenabled test&lt;/p&gt;

&lt;p&gt;Prep for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4692&quot; title=&quot;Read-only users should be denied access to system.users collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4692&quot;&gt;&lt;del&gt;SERVER-4692&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Uncovered &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-5228&quot; title=&quot;writing as a read-only user inside of group() reduce function doesn&amp;#39;t throw&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-5228&quot;&gt;&lt;del&gt;SERVER-5228&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d06ef3bd8e857fbe20d671a366f1696d8c3b2a27&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d06ef3bd8e857fbe20d671a366f1696d8c3b2a27&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="97034" author="auto" created="Fri, 9 Mar 2012 00:50:10 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;login&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;redbeard0531@gmail.com&apos;}
&lt;p&gt;Message: Features cmd no longer has readlock field&lt;/p&gt;

&lt;p&gt;Prep for &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-4692&quot; title=&quot;Read-only users should be denied access to system.users collection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-4692&quot;&gt;&lt;del&gt;SERVER-4692&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
readlock field removed in commit 35031d43d717dda19b0b62ab6f97af275717ad30&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/5cf72997e3bb116d90f7d9969c6f6b4028a5f8f0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/5cf72997e3bb116d90f7d9969c6f6b4028a5f8f0&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="80517" author="eliot" created="Tue, 17 Jan 2012 20:48:55 +0000"  >&lt;p&gt;The admin database is for people with server level admin access.&lt;/p&gt;</comment>
                            <comment id="80516" author="npmccallum" created="Tue, 17 Jan 2012 20:46:23 +0000"  >&lt;p&gt;If you don&apos;t move it, how do you plan on restricting/granting permission to create new databases?&lt;/p&gt;</comment>
                            <comment id="80513" author="eliot" created="Tue, 17 Jan 2012 20:36:39 +0000"  >&lt;p&gt;system.indexes will certainly not change.&lt;/p&gt;

&lt;p&gt;system.users will probably not move - but we are likely to add an &quot;admin&quot; role which would have access to system.users &lt;/p&gt;</comment>
                            <comment id="80365" author="npmccallum" created="Tue, 17 Jan 2012 14:51:21 +0000"  >&lt;p&gt;While blocking read-only users from reading system.users does solve this security problem, it doesn&apos;t solve the case where read/write users can keep backups of passwords for offline dictionary attacks when their privileged are revoked. This is, I think, just as important.&lt;/p&gt;

&lt;p&gt;It would be best to move system.users (and system.indexes while we&apos;re at it) to a separate database. This entirely separates the admin concern for the data storage and retrieval concern.&lt;/p&gt;</comment>
                            <comment id="80218" author="eliot" created="Tue, 17 Jan 2012 02:27:09 +0000"  >&lt;p&gt;read only users shouldn&apos;t be able to access system.users&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="40662">SERVER-6031</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="55768">SERVER-7604</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="68813">SERVER-9009</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="68817">TOOLS-134</issuekey>
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