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68 lines
2.3 KiB
68 lines
2.3 KiB
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200405-20">
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<title>Insecure Temporary File Creation In MySQL</title>
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<synopsis>
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Two MySQL utilities create temporary files with hardcoded paths, allowing
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an attacker to use a symlink to trick MySQL into overwriting important
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data.
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</synopsis>
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<product type="ebuild">MySQL</product>
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<announced>2004-05-25</announced>
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<revised count="01">2004-05-25</revised>
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<bug>46242</bug>
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<access>local </access>
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<affected>
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<package name="dev-db/mysql" auto="yes" arch="*">
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<unaffected range="ge">4.0.18-r2</unaffected>
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<vulnerable range="lt">4.0.18-r2</vulnerable>
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</package>
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</affected>
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<background>
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<p>
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MySQL is a popular open-source multi-threaded, multi-user SQL database
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server.
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</p>
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</background>
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<description>
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<p>
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The MySQL bug reporting utility (mysqlbug) creates a temporary file to log
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bug reports to. A malicious local user with write access to the /tmp
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directory could create a symbolic link of the name mysqlbug-<i>N</i>
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pointing to a protected file, such as /etc/passwd, such that when mysqlbug
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creates the <i>N</i>th log file, it would end up overwriting the target
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file. A similar vulnerability exists with the mysql_multi utility, which
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creates a temporary file called mysql_multi.log.
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</p>
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</description>
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<impact type="normal">
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<p>
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Since mysql_multi runs as root, a local attacker could use this to destroy
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any other users' data or corrupt and destroy system files.
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</p>
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</impact>
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<workaround>
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<p>
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One could modify both scripts to log to a directory that users do not have
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write permission to, such as /var/log/mysql/.
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</p>
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</workaround>
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<resolution>
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<p>
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All users should upgrade to the latest stable version of MySQL.
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</p>
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<code>
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# emerge sync
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# emerge -pv ">=dev-db/mysql-4.0.18-r2"
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# emerge ">=dev-db/mysql-4.0.18-r2"</code>
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</resolution>
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<references>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0381">CAN-2004-0381</uri>
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<uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0388">CAN-2004-0388</uri>
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</references>
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<metadata tag="submitter">
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dmargoli
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</metadata>
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</glsa>
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