glsa-200504-12.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200504-12">
  <title>rsnapshot: Local privilege escalation</title>
  <synopsis>
    rsnapshot allows a local user to take ownership of local files, resulting
    in privilege escalation.
  </synopsis>
  <product type="ebuild">rsnapshot</product>
  <announced>2005-04-13</announced>
  <revised count="05">2007-12-30</revised>
  <bug>88681</bug>
  <access>local</access>
  <affected>
    <package name="app-backup/rsnapshot" auto="yes" arch="*">
      <unaffected range="ge">1.2.1</unaffected>
      <unaffected range="rge">1.1.7</unaffected>
      <vulnerable range="lt">1.2.1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    rsnapshot is a filesystem snapshot utility based on rsync, allowing
    local and remote systems backups.
    </p>
  </background>
  <description>
    <p>
    The copy_symlink() subroutine in rsnapshot follows symlinks when
    changing file ownership, instead of changing the ownership of the
    symlink itself.
    </p>
  </description>
  <impact type="high">
    <p>
    Under certain circumstances, local attackers can exploit this
    vulnerability to take ownership of arbitrary files, resulting in local
    privilege escalation.
    </p>
  </impact>
  <workaround>
    <p>
    The copy_symlink() subroutine is not called if the cmd_cp parameter has
    been enabled.
    </p>
  </workaround>
  <resolution>
    <p>
    All rsnapshot users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose app-backup/rsnapshot</code>
  </resolution>
  <references>
    <uri link="http://www.rsnapshot.org/security/2005/001.html">rsnapshot Security Advisory 001</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1064">CVE-2005-1064</uri>
  </references>
  <metadata tag="requester" timestamp="2005-04-11T07:57:07Z">
    koon
  </metadata>
  <metadata tag="bugReady" timestamp="2005-04-11T21:22:40Z">
    lewk
  </metadata>
  <metadata tag="submitter" timestamp="2005-04-13T08:59:16Z">
    koon
  </metadata>
</glsa>