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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200410-13">
  <title>BNC: Input validation flaw</title>
  <synopsis>
    BNC contains an input validation flaw which might allow a remote attacker
    to issue arbitrary IRC related commands.
  </synopsis>
  <product type="ebuild">bnc</product>
  <announced>2004-10-15</announced>
  <revised>2006-05-22: 02</revised>
  <bug>66912</bug>
  <access>remote</access>
  <affected>
    <package name="net-irc/bnc" auto="yes" arch="*">
      <unaffected range="ge">2.8.9</unaffected>
      <vulnerable range="lt">2.8.9</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    BNC is an IRC proxying server
    </p>
  </background>
  <description>
    <p>
    A flaw exists in the input parsing of BNC where part of the
    sbuf_getmsg() function handles the backspace character incorrectly.
    </p>
  </description>
  <impact type="normal">
    <p>
    A remote user could issue commands using fake authentication
    credentials and possibly gain access to scripts running on the client
    side.
    </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 -pv "&gt;=net-irc/bnc-2.8.9"
    # emerge "&gt;=net-irc/bnc-2.8.9"</code>
  </resolution>
  <references>
    <uri link="http://www.gotbnc.com/changes.html#2.8.9">BNC Changes</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1482">CVE-2004-1482</uri>
  </references>
  <metadata tag="requester" timestamp="2004-10-12T11:44:17Z">
    koon
  </metadata>
  <metadata tag="bugReady" timestamp="2004-10-12T11:44:35Z">
    koon
  </metadata>
  <metadata tag="submitter" timestamp="2004-10-13T08:51:33Z">
    vorlon078
  </metadata>
</glsa>