glsa-201206-05.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201206-05">
  <title>Asterisk: Multiple vulnerabilities</title>
  <synopsis>Multiple vulnerabilities in Asterisk might allow remote attackers
    to execute arbitrary code.
  </synopsis>
  <product type="ebuild">Asterisk</product>
  <announced>2012-06-21</announced>
  <revised>2012-06-21: 1</revised>
  <bug>413353</bug>
  <bug>418189</bug>
  <bug>418191</bug>
  <access>remote</access>
  <affected>
    <package name="net-misc/asterisk" auto="yes" arch="*">
      <unaffected range="ge">1.8.12.1</unaffected>
      <vulnerable range="lt">1.8.12.1</vulnerable>
    </package>
  </affected>
  <background>
    <p>Asterisk is an open source telephony engine and toolkit.</p>
  </background>
  <description>
    <p>Multiple vulnerabilities have been found in Asterisk:</p>
    
    <ul>
      <li>An error in manager.c allows shell access through the MixMonitor
        application, GetVar, or Status (CVE-2012-2414).
      </li>
      <li>An error in chan_skinny.c could cause a heap-based buffer overflow
        (CVE-2012-2415).
      </li>
      <li>An error in chan_sip.c prevents Asterisk from checking if a channel
        exists before connected line updates (CVE-2012-2416).
      </li>
      <li>An error in chan_iax2.c may cause an invalid pointer to be called
        (CVE-2012-2947).
      </li>
      <li>chan_skinny.c contains a NULL pointer dereference (CVE-2012-2948).</li>
    </ul>
  </description>
  <impact type="normal">
    <p>A remote attacker could execute arbitrary code with the privileges of
      the process or cause a Denial of Service condition. 
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Asterisk users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-misc/asterisk-1.8.12.1"
    </code>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2414">CVE-2012-2414</uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2415">CVE-2012-2415</uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2416">CVE-2012-2416</uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2947">CVE-2012-2947</uri>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2948">CVE-2012-2948</uri>
  </references>
  <metadata timestamp="2012-04-24T21:44:51Z" tag="requester">ackle</metadata>
  <metadata timestamp="2012-06-21T00:28:33Z" tag="submitter">ackle</metadata>
</glsa>