glsa-200710-01.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200710-01">
  <title>RPCSEC_GSS library: Buffer overflow</title>
  <synopsis>
    A buffer overflow vulnerability has been discovered in librpcsecgss.
  </synopsis>
  <product type="ebuild">librcpsecgss</product>
  <announced>2007-10-04</announced>
  <revised>2007-10-04: 01</revised>
  <bug>191479</bug>
  <access>remote</access>
  <affected>
    <package name="net-libs/librpcsecgss" auto="yes" arch="*">
      <unaffected range="ge">0.16</unaffected>
      <vulnerable range="lt">0.16</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    librpcsecgss is an implementation of RPCSEC_GSS for secure RPC
    communications.
    </p>
  </background>
  <description>
    <p>
    A stack based buffer overflow has been discovered in the
    svcauth_gss_validate() function in file lib/rpc/svc_auth_gss.c when
    processing an overly long string in a RPC message.
    </p>
  </description>
  <impact type="high">
    <p>
    A remote attacker could send a specially crafted RPC request to an
    application relying on this library, e.g NFSv4 or Kerberos
    (GLSA-200709-01), resulting in the execution of arbitrary code with the
    privileges of the user running the application.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All librpcsecgss users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=net-libs/librpcsecgss-0.16"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3999">CVE-2007-3999</uri>
    <uri link="https://www.gentoo.org/security/en/glsa/glsa-200709-01.xml">GLSA-200709-01</uri>
  </references>
  <metadata tag="requester" timestamp="2007-09-09T19:27:24Z">
    jaervosz
  </metadata>
  <metadata tag="bugReady" timestamp="2007-09-09T19:29:01Z">
    jaervosz
  </metadata>
  <metadata tag="submitter" timestamp="2007-09-29T15:36:52Z">
    p-y
  </metadata>
</glsa>