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<td align="right"><!-- update date -->2012-08-30</td>
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<h1>Fetchmail Security and Errata Information</h1>
<p>These security issues (listed immediately below) and critical
issues have become
known to the fetchmail maintainer to the date mentioned above.</p>
<p>Note that fetchmail 6.2.X and older are no longer supported and contain
some of the problems mentioned below, even if they aren't mentioned
in the security announcements:</p>
<ul>
<li><a name="cve-2012-3482"
href="http://web.nvd.nist.gov/view/vuln/Detail?vulnId=CVE-2012-3482">CVE-2012-3482:</a>
Fetchmail could <a href="fetchmail-SA-2012-02.txt">crash and
possibly reveal fragments of confidential data</a> during
NTLM authentication.</li>
<li><a name="cve-2011-3389"
href="http://web.nvd.nist.gov/view/vuln/Detail?vulnId=CVE-2011-3389">CVE-2011-3389:</a>
<a href="fetchmail-SA-2012-01.txt">Fetchmail was vulnerable
to chosen-plaintext attacks against cipher block
chaining initialization vectors because it disabled an
OpenSSL countermeasure against this attack.</a>
</li>
<li><a name="cve-2011-1947"
href="http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2011-1947">CVE-2011-1947:</a>
Fetchmail <a href="fetchmail-SA-2011-01.txt"> could hang for
indefinite amounts of time during STARTTLS negotiations</a>,
causing mail fetches to stall. This was a long-standing bug
fixed in release 6.3.20.</li>
<li><a name="fetchmail-EN-2010-03">EN-2010-03</a>: Fetchmail <a href="fetchmail-EN-2010-03.txt">fails
POP3/IMAP authentication by not performing SASL AUTH
properly.</a> This was a long-standing bug fixed in release
6.3.18.</li>
<li><a name="cve-2010-1167"
href="http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2010-1167">CVE-2010-1167:</a>
Fetchmail <a href="fetchmail-SA-2010-02.txt">could exhaust all
available memory and abort on certain computers (for
instance Linux) in multibyte locales (for instance UTF-8)
when dumping malformed headers in debug (-v -v) mode.</a>
This bug was introduced long before 6.0.0 and has been fixed in
release 6.3.17.</li>
<li><a name="cve-2010-0562"
href="http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2010-0562">CVE-2010-0562:</a> Fetchmail <a href="fetchmail-SA-2010-01.txt">would overrun the heap when displaying X.509 TLS/SSL certificates with characters with high bit set in verbose mode on platforms where char is a signed type.</a> This bug was introduced in release 6.3.11 and has been fixed in release 6.3.14.</li>
<li><a name="cve-2009-2666" href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2666">CVE-2009-2666:</a> Fetchmail <a href="fetchmail-SA-2009-01.txt">was found to validate SSL/TLS X.509 certificates improperly and allow man-in-the-middle-attacks to go undetected.</a> This bug has been fixed in release 6.3.11. For previous versions, use the <a href="fetchmail-SA-2009-01.txt">patch contained in the security announcement.</a></li>
<li><a name="cve-2008-2711" href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2711">CVE-2008-2711:</a> Fetchmail can <a href="fetchmail-SA-2008-01.txt">crash in verbose mode when logging long message headers.</a> This bug has been fixed in release 6.3.9. For 6.3.8, use the <a href="fetchmail-SA-2008-01.txt">patch contained in the security announcement.</a></li>
<li><a name="cve-2007-4565" href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4565">CVE-2007-4565:</a> Fetchmail can <a href="fetchmail-SA-2007-02.txt">crash when the SMTP server refuses a warning message generated by fetchmail.</a> This bug was introduced in fetchmail 4.6.8 and has been fixed in release 6.3.9. For 6.3.8, use the <a href="fetchmail-SA-2007-02.txt">patch contained in this security announcement.</a></li>
<li><a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1558">CVE-2007-1558:</a> Fetchmail's APOP client was found to <a href="fetchmail-SA-2007-01.txt">validate APOP challenges insufficiently, making man-in-the-middle attacks on APOP secrets unnecessarily easier than need be.</a> This bug was long-standing, fetchmail 6.3.8 and newer validate the APOP challenge more strictly.</li>
<li><a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5974">CVE-2006-5974:</a> Fetchmail was found to <a href="fetchmail-SA-2006-03.txt">crash when refusing a message that was bound to be delivered by an MDA.</a> This bug was introduced into fetchmail 6.3.5 and fixed in 6.3.6.</li>
<li><a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5867">CVE-2006-5867:</a> Fetchmail was found to <a href="fetchmail-SA-2006-02.txt">omit TLS or send the password in clear text despite the configuration stating otherwise.</a> This was a long-standing bug reported by Isaac Wilcox, fixed in fetchmail 6.3.6. There will be no 6.2.X releases to fix this bug in 6.2.X.</li>
<li><a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0321">CVE-2006-0321:</a> Fetchmail was found to <a href="fetchmail-SA-2006-01.txt">crash after bouncing a message with bad addresses. This bug was introduced with fetchmail 6.3.0 and fixed in fetchmail 6.3.2.</a></li>
<li><a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4348">CVE-2005-4348:</a> Fetchmail was found to contain <a href="fetchmail-SA-2005-03.txt">a bug (null pointer dereference) that can be exploited to a denial of service attack</a> when fetchmail runs in multidrop mode. 6.2.5.5 and 6.3.1 have this bug fixed.</li>
<li><a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3088">CVE-2005-3088:</a> Fetchmailconf was found to <a href="fetchmail-SA-2005-02.txt">open the configuration files world-readable, writing data to them, and only then tightening up permissions</a>, which may cause password information to be visible to other users. This bug affected fetchmail 6.2.0, 6.2.5 and 6.2.5.2. The bug is fixed in fetchmail 6.2.5.4 and 6.3.0.</li>
<li><a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2335">CVE-2005-2335:</a> Fetchmail was found to contain a <a href="fetchmail-SA-2005-01.txt">remotely exploitable code injection vulnerability (potentially privileged code)</a> in the POP3 code, affecting both the 6.2.0 and 6.2.5 releases. 6.2.5.2, 6.2.5.4 and 6.3.0 have got this bug fixed. (Other versions have not been checked if they contain this bug.)</li>
</ul>
<p style="font-size:100%"><strong>Please <a
href="http://developer.berlios.de/project/showfiles.php?group_id=1824">update
to the newest fetchmail version</a>.</strong></p>
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