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+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+<glsa id="200710-25">
+ <title>MLDonkey: Privilege escalation</title>
+ <synopsis>
+ The Gentoo MLDonkey ebuild adds a user to the system with a valid login
+ shell and no password.
+ </synopsis>
+ <product type="ebuild">mldonkey</product>
+ <announced>2007-10-24</announced>
+ <revised count="02">2007-11-07</revised>
+ <bug>189412</bug>
+ <access>remote</access>
+ <affected>
+ <package name="net-p2p/mldonkey" auto="yes" arch="*">
+ <unaffected range="ge">2.9.0-r3</unaffected>
+ <vulnerable range="lt">2.9.0-r3</vulnerable>
+ </package>
+ </affected>
+ <background>
+ <p>
+ MLDonkey is a peer-to-peer filesharing client that connects to several
+ different peer-to-peer networks, including Overnet and BitTorrent.
+ </p>
+ </background>
+ <description>
+ <p>
+ The Gentoo MLDonkey ebuild adds a user to the system named "p2p" so
+ that the MLDonkey service can run under a user with low privileges.
+ With older Portage versions this user is created with a valid login
+ shell and no password.
+ </p>
+ </description>
+ <impact type="high">
+ <p>
+ A remote attacker could log into a vulnerable system as the p2p user.
+ This would require an installed login service that permitted empty
+ passwords, such as SSH configured with the "PermitEmptyPasswords yes"
+ option, a local login console, or a telnet server.
+ </p>
+ </impact>
+ <workaround>
+ <p>
+ See Resolution.
+ </p>
+ </workaround>
+ <resolution>
+ <p>
+ Change the p2p user's shell to disallow login. For example, as root run
+ the following command:
+ </p>
+ <code>
+ # usermod -s /bin/false p2p</code>
+ <p>
+ NOTE: updating to the current MLDonkey ebuild will not remove this
+ vulnerability, it must be fixed manually. The updated ebuild is to
+ prevent this problem from occurring in the future.
+ </p>
+ </resolution>
+ <references>
+ <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5714">CVE-2007-5714</uri>
+ </references>
+ <metadata tag="requester" timestamp="2007-09-10T16:21:11Z">
+ jaervosz
+ </metadata>
+ <metadata tag="submitter" timestamp="2007-10-07T16:40:51Z">
+ aetius
+ </metadata>
+ <metadata tag="bugReady" timestamp="2007-10-07T19:26:05Z">
+ p-y
+ </metadata>
+</glsa>