<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="200503-36"> <title>netkit-telnetd: Buffer overflow</title> <synopsis> The netkit-telnetd telnet client is vulnerable to a buffer overflow, which could allow a malicious telnet server operator to execute arbitrary code. </synopsis> <product type="ebuild">netkit-telnetd</product> <announced>2005-03-31</announced> <revised count="01">2005-03-31</revised> <bug>87211</bug> <access>remote</access> <affected> <package name="net-misc/netkit-telnetd" auto="yes" arch="*"> <unaffected range="ge">0.17-r6</unaffected> <vulnerable range="lt">0.17-r6</vulnerable> </package> </affected> <background> <p> netkit-telnetd provides standard Linux telnet client and server. </p> </background> <description> <p> A buffer overflow has been identified in the slc_add_reply() function of netkit-telnetd client, where a large number of SLC commands can overflow a fixed size buffer. </p> </description> <impact type="normal"> <p> Successful explotation would require a vulnerable user to connect to an attacker-controlled host using telnet, potentially executing arbitrary code with the permissions of the telnet user. </p> </impact> <workaround> <p> There is no known workaround at this time. </p> </workaround> <resolution> <p> All netkit-telnetd users should upgrade to the latest version: </p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/netkit-telnetd-0.17-r6"</code> </resolution> <references> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0469">CAN-2005-0469</uri> <uri link="http://www.idefense.com/application/poi/display?id=220&type=vulnerabilities">iDEFENSE Advisory 03-28-05</uri> </references> <metadata tag="requester" timestamp="2005-03-30T08:13:45Z"> koon </metadata> <metadata tag="submitter" timestamp="2005-03-30T13:44:36Z"> formula7 </metadata> <metadata tag="bugReady" timestamp="2005-03-30T19:43:01Z"> koon </metadata> </glsa>