<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> <glsa id="200411-24"> <title>BNC: Buffer overflow vulnerability</title> <synopsis> BNC contains a buffer overflow vulnerability that may lead to Denial of Service and execution of arbitrary code. </synopsis> <product type="ebuild">BNC</product> <announced>2004-11-16</announced> <revised count="01">2004-11-16</revised> <bug>70674</bug> <access>remote</access> <affected> <package name="net-irc/bnc" auto="yes" arch="*"> <unaffected range="ge">2.9.1</unaffected> <vulnerable range="lt">2.9.1</vulnerable> </package> </affected> <background> <p> BNC (BouNCe) is an IRC proxy server. </p> </background> <description> <p> Leon Juranic discovered that BNC fails to do proper bounds checking when checking server response. </p> </description> <impact type="high"> <p> An attacker could exploit this to cause a Denial of Service and potentially execute arbitary code with the permissions of the user running BNC. </p> </impact> <workaround> <p> There is no known workaround at this time. </p> </workaround> <resolution> <p> All BNC users should upgrade to the latest version: </p> <code> # emerge --sync # emerge --ask --oneshot --verbose ">=net-irc/bnc-2.9.1"</code> </resolution> <references> <uri link="http://gotbnc.com/changes.html">BNC ChangeLog</uri> <uri link="http://security.lss.hr/en/index.php?page=details&ID=LSS-2004-11-03">LSS-2004-11-03</uri> </references> <metadata tag="requester" timestamp="2004-11-11T20:17:39Z"> lewk </metadata> <metadata tag="submitter" timestamp="2004-11-11T21:49:41Z"> jaervosz </metadata> <metadata tag="bugReady" timestamp="2004-11-12T23:44:26Z"> jaervosz </metadata> </glsa>