<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="200801-17"> <title>Netkit FTP Server: Denial of Service</title> <synopsis> Netkit FTP Server contains a Denial of Service vulnerability. </synopsis> <product type="ebuild">netkit-ftpd</product> <announced>2008-01-29</announced> <revised count="01">2008-01-29</revised> <bug>199206</bug> <access>remote</access> <affected> <package name="net-ftp/netkit-ftpd" auto="yes" arch="*"> <unaffected range="ge">0.17-r7</unaffected> <vulnerable range="lt">0.17-r7</vulnerable> </package> </affected> <background> <p> net-ftp/netkit-ftpd is the Linux Netkit FTP server with optional SSL support. </p> </background> <description> <p> Venustech AD-LAB discovered that an FTP client connected to a vulnerable server with passive mode and SSL support can trigger an fclose() function call on an uninitialized stream in ftpd.c. </p> </description> <impact type="normal"> <p> A remote attacker can send specially crafted FTP data to a server with passive mode and SSL support, causing the ftpd daemon to crash. </p> </impact> <workaround> <p> Disable passive mode or SSL. </p> </workaround> <resolution> <p> All Netkit FTP Server users should upgrade to the latest version: </p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=net-ftp/netkit-ftpd-0.17-r7"</code> </resolution> <references> <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6263">CVE-2007-6263</uri> </references> <metadata tag="requester" timestamp="2008-01-27T19:17:40Z"> rbu </metadata> <metadata tag="submitter" timestamp="2008-01-28T18:03:07Z"> falco </metadata> <metadata tag="bugReady" timestamp="2008-01-28T18:03:42Z"> falco </metadata> </glsa>