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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>[DOCS-16020] [TOOLS] correct behavior for multi-certs inside client certificate file</title>
                <link>https://jira.mongodb.org/browse/DOCS-16020</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;If multiple certificates are specified in a PEM file, the DB Tools now use the first certificate instead of the last one when comparing it against a provided private key. The DB Tools now also derive a username for X.509 authentication from all certificates rather than the last one.&lt;/p&gt;

&lt;p&gt;This aligns the DB Tools&apos; behavior with that of OpenSSL.&lt;/p&gt;

&lt;p&gt;Engineering Description&lt;br/&gt;
Mongotools&apos;s&#160;&lt;em&gt;&#8211;sslPEMKeyFile&lt;/em&gt; parameter takes in a&#160;&lt;em&gt;&lt;tt&gt;.pem&lt;/tt&gt;&#160;file that contains both the TLS/SSL certificate and key.&lt;/em&gt;&#160;&lt;/p&gt;

&lt;p&gt;Since tool&apos;s SSL/TLS code is copied from Go driver, the current implementation only parses the last certificate inside the pem file.&lt;/p&gt;

&lt;p&gt;So if a pem file is structed such as&#160;&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;-----BEGIN RSA PRIVATE KEY-----&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;(Your Private Key: your_domain_name.key)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;-----END RSA PRIVATE KEY-----&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;-----BEGIN CERTIFICATE-----&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;(Your Primary SSL certificate: clientCert.crt)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;-----END CERTIFICATE-----&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;-----BEGIN CERTIFICATE-----&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;(Your Root certificate: TrustedRoot.crt)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;-----END CERTIFICATE----- &lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;
&lt;p&gt;The tool will fail to start up due to failed private key, certificate pair match since it only loads the last cert (root cert).&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;This is a discrepancy with Mongoshell behavior, which only loads the first certificate inside the pem file. It is also the default behavior for many libraries including&#160;Go-language TLS lib.&#160; (I took a look at Mongo agent code and think it only loads the first certificate as well).&#160;&lt;/p&gt;

&lt;p&gt;So here are the questions we need to answer in this ticket:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;How likely the user will have multiple certificates inside a client pem file. This decides if we need to make the change or educate users to only put one certificate inside the pem file.&lt;/li&gt;
	&lt;li&gt;Should we follow the Mongo Shell behavior to load only the first certificate? This might break the existing Tools client workflow.&lt;/li&gt;
	&lt;li&gt;There is another option which is how I planned to solve it at the first place. We can load all the certificates inside the pem file and use the private key inside to find the matching one regardless of the sequence.&#160;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Keep in mind, we are asked to keep the Tool&apos;s TLS logic in sync with Go driver, so whichever change we make in tools will be copied to Go driver as well. We need to justify our decision to the driver team as well.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="2310001">DOCS-16020</key>
            <summary>[TOOLS] correct behavior for multi-certs inside client certificate file</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="10045" iconUrl="https://jira.mongodb.org/images/icons/statuses/generic.png" description="">Ready for Work</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="evgeni.dobranov@mongodb.com">Evgeni Dobranov</reporter>
                        <labels>
                    </labels>
                <created>Fri, 7 Apr 2023 21:42:27 +0000</created>
                <updated>Fri, 28 Apr 2023 16:50:02 +0000</updated>
                                                            <fixVersion>100.7.1</fixVersion>
                                    <component>tools</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>1</watches>
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                            <issuelinktype id="10320">
                    <name>Documented</name>
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                                        <issuelink>
            <issuekey id="1364027">TOOLS-2598</issuekey>
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