76 lines
2.5 KiB
XML
76 lines
2.5 KiB
XML
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<?xml version="1.0" encoding="utf-8"?>
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<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
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<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="200710-25">
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<title>MLDonkey: Privilege escalation</title>
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<synopsis>
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The Gentoo MLDonkey ebuild adds a user to the system with a valid login
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shell and no password.
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</synopsis>
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<product type="ebuild">mldonkey</product>
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<announced>October 24, 2007</announced>
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<revised>November 07, 2007: 02</revised>
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<bug>189412</bug>
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<access>remote</access>
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<affected>
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<package name="net-p2p/mldonkey" auto="yes" arch="*">
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<unaffected range="ge">2.9.0-r3</unaffected>
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<vulnerable range="lt">2.9.0-r3</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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MLDonkey is a peer-to-peer filesharing client that connects to several
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different peer-to-peer networks, including Overnet and BitTorrent.
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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 Gentoo MLDonkey ebuild adds a user to the system named "p2p" so
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that the MLDonkey service can run under a user with low privileges.
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With older Portage versions this user is created with a valid login
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shell and no password.
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</p>
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</description>
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<impact type="high">
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<p>
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A remote attacker could log into a vulnerable system as the p2p user.
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This would require an installed login service that permitted empty
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passwords, such as SSH configured with the "PermitEmptyPasswords yes"
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option, a local login console, or a telnet server.
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</p>
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</impact>
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<workaround>
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<p>
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See Resolution.
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</p>
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</workaround>
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<resolution>
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<p>
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Change the p2p user's shell to disallow login. For example, as root run
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the following command:
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</p>
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<code>
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# usermod -s /bin/false p2p</code>
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<p>
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NOTE: updating to the current MLDonkey ebuild will not remove this
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vulnerability, it must be fixed manually. The updated ebuild is to
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prevent this problem from occurring in the future.
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</p>
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</resolution>
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<references>
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<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5714">CVE-2007-5714</uri>
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</references>
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<metadata tag="requester" timestamp="Mon, 10 Sep 2007 16:21:11 +0000">
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jaervosz
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</metadata>
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<metadata tag="submitter" timestamp="Sun, 07 Oct 2007 16:40:51 +0000">
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aetius
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</metadata>
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<metadata tag="bugReady" timestamp="Sun, 07 Oct 2007 19:26:05 +0000">
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p-y
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</metadata>
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</glsa>
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