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<?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="200611-05">
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<title>Netkit FTP Server: Privilege escalation</title>
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<synopsis>
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An incorrect seteuid() call could allow an FTP user to access some files or
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directories that would normally be inaccessible.
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</synopsis>
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<product type="ebuild">ftpd</product>
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<announced>2006-11-10</announced>
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<revised count="02">2007-12-30</revised>
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<bug>150292</bug>
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<access>remote</access>
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<affected>
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<package name="net-ftp/netkit-ftpd" auto="yes" arch="*">
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<unaffected range="ge">0.17-r4</unaffected>
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<vulnerable range="lt">0.17-r4</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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net-ftp/netkit-ftpd is the Linux Netkit FTP server with optional SSL support.
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</p>
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</background>
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<description>
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<p>
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Paul Szabo reported that an incorrect seteuid() call after the chdir()
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function can allow an attacker to access a normally forbidden
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directory, in some very particular circumstances, for example when the
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NFS-hosted targetted directory is not reachable by the client-side root
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user. Additionally, some potentially exploitable unchecked setuid()
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calls were also fixed.
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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 local attacker might craft his home directory to gain access through
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ftpd to normally forbidden directories like /root, possibly with
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writing permissions if seteuid() fails and if the ftpd configuration
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allows that. The unchecked setuid() calls could also lead to a root FTP
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login, depending on the FTP server configuration.
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</p>
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</impact>
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<workaround>
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<p>
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There is no known workaround at this time.
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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 Netkit FTP Server users should upgrade to the latest version:
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</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=net-ftp/netkit-ftpd-0.17-r4"</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=CVE-2006-5778">CVE-2006-5778</uri>
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</references>
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<metadata tag="submitter" timestamp="2006-10-24T15:02:54Z">
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falco
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</metadata>
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<metadata tag="bugReady" timestamp="2006-10-24T15:03:34Z">
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falco
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</metadata>
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</glsa>
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