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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[SERVER-7505] RamLog can read past end of buffer</title>
                <link>https://jira.mongodb.org/browse/SERVER-7505</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;When a log line is longer than 255 characters, RamLog::write() does a memcpy() from a string::c_str() without null-terminating the string buffer.  I don&apos;t see any protection in the get functions (unless I&apos;m missing something?), so we may get bad/bogus data (or even segv) when requesting the RamLog&apos;s contents.&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/master/src/mongo/util/ramlog.cpp#L51&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/master/src/mongo/util/ramlog.cpp#L51&lt;/a&gt;&lt;/p&gt;</description>
                <environment></environment>
        <key id="54719">SERVER-7505</key>
            <summary>RamLog can read past end of buffer</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="-1">Unassigned</assignee>
                                    <reporter username="benjamin.becker">Ben Becker</reporter>
                        <labels>
                    </labels>
                <created>Tue, 30 Oct 2012 01:33:47 +0000</created>
                <updated>Fri, 15 Feb 2013 15:06:20 +0000</updated>
                            <resolved>Tue, 30 Oct 2012 01:45:48 +0000</resolved>
                                    <version>2.0.7</version>
                    <version>2.2.0</version>
                                                    <component>Logging</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="180400" author="benjamin.becker" created="Tue, 30 Oct 2012 02:48:30 +0000"  >&lt;p&gt;Got it; didn&apos;t realize the last byte was always protected.  Thanks.&lt;/p&gt;</comment>
                            <comment id="180389" author="eliot" created="Tue, 30 Oct 2012 01:45:33 +0000"  >&lt;p&gt;We zero the buffer out and only copy C-1 elements.&lt;br/&gt;
So the last entry will always be 0&lt;/p&gt;</comment>
                            <comment id="180387" author="benjamin.becker" created="Tue, 30 Oct 2012 01:42:13 +0000"  >&lt;p&gt;Next conditional; if sz !&amp;lt; C.&lt;/p&gt;</comment>
                            <comment id="180385" author="eliot" created="Tue, 30 Oct 2012 01:36:12 +0000"  >&lt;p&gt;Look 1 line further down.&lt;br/&gt;
p&lt;span class=&quot;error&quot;&gt;&amp;#91;sz-1&amp;#93;&lt;/span&gt; = 0;&lt;/p&gt;</comment>
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