76 lines
2.7 KiB
XML
76 lines
2.7 KiB
XML
<?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="200410-03">
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<title>NetKit-telnetd: buffer overflows in telnet and telnetd</title>
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<synopsis>
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Buffer overflows exist in the telnet client and daemon provided by
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netkit-telnetd, which could possibly allow a remote attacker to gain root
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privileges and compromise the system.
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</synopsis>
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<product type="ebuild">netkit-telnetd</product>
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<announced>October 05, 2004</announced>
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<revised>October 05, 2004: 01</revised>
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<bug>64632</bug>
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<access>remote</access>
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<affected>
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<package name="net-misc/netkit-telnetd" auto="yes" arch="*">
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<unaffected range="ge">0.17-r4</unaffected>
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<vulnerable range="le">0.17-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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NetKit-telnetd is a standard Linux telnet client and server from the NetKit
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utilities.
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</p>
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</background>
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<description>
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<p>
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A possible buffer overflow exists in the parsing of option strings by the
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telnet daemon, where proper bounds checking is not applied when writing to
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a buffer. Additionaly, another possible buffer overflow has been found by
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Josh Martin in the handling of the environment variable HOME.
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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 sending a specially-crafted options string to the telnet
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daemon could be able to run arbitrary code with the privileges of the user
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running the telnet daemon, usually root. Furthermore, an attacker could
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make use of an overlong HOME variable to cause a buffer overflow in the
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telnet client, potentially leading to the local execution of arbitrary
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code.
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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-telnetd 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 -pv ">=net-misc/netkit-telnetd-0.17-r4"
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# emerge ">=net-misc/netkit-telnetd-0.17-r4"</code>
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</resolution>
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<references>
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<uri link="http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2001-0554">CVE-2001-0554</uri>
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<uri link="http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=264846">Debian Bug #264846</uri>
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</references>
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<metadata tag="requester" timestamp="Mon, 4 Oct 2004 14:59:18 +0000">
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koon
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</metadata>
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<metadata tag="bugReady" timestamp="Mon, 4 Oct 2004 16:13:52 +0000">
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vorlon078
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</metadata>
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<metadata tag="submitter" timestamp="Tue, 5 Oct 2004 14:10:00 +0000">
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vorlon078
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</metadata>
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</glsa>
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