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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200404-18">
<title>Multiple Vulnerabilities in ssmtp</title>
<synopsis>
There are multiple format string vulnerabilities in the SSMTP package,
which may allow an attacker to run arbitrary code with ssmtp's privileges
(potentially root).
</synopsis>
<product type="ebuild">ssmtp</product>
<announced>April 26, 2004</announced>
<revised>April 26, 2004: 01</revised>
<bug>47918</bug>
<bug>48435</bug>
<access>remote root </access>
<affected>
<package name="mail-mta/ssmtp" auto="yes" arch="*">
<unaffected range="ge">2.60.7</unaffected>
<vulnerable range="le">2.60.4-r2</vulnerable>
</package>
</affected>
<background>
<p>
SSMTP is a very simple mail transfer agent (MTA) that relays mail from the
local machine to another SMTP host. It is not designed to function as a
full mail server; its sole purpose is to relay mail.
</p>
</background>
<description>
<p>
There are two format string vulnerabilities inside the log_event() and
die() functions of ssmtp. Strings from outside ssmtp are passed to various
printf()-like functions from within log_event() and die() as format
strings. An attacker could cause a specially-crafted string to be passed to
these functions, and potentially cause ssmtp to execute arbitrary code.
</p>
</description>
<impact type="high">
<p>
If ssmtp connects to a malicious mail relay server, this vulnerability can
be used to execute code with the rights of the mail sender, including root.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time. All users are advised to upgrade
to the latest available version of ssmtp.
</p>
</workaround>
<resolution>
<p>
All users are advised to upgrade to the latest available version of ssmtp.
</p>
<code>
# emerge sync
# emerge -pv ">=mail-mta/ssmtp-2.60.7"
# emerge ">=mail-mta/ssmtp-2.60.7"</code>
</resolution>
<references>
<uri link="http://secunia.com/advisories/11378/">Secunia Advisory</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0156">CVE Reference</uri>
<uri link="http://lists.debian.org/debian-security-announce/debian-security-announce-2004/msg00084.html">Debian Advisory</uri>
</references>
<metadata tag="submitter">
condordes
</metadata>
</glsa>