Satellite updateinfo.xml not properly formatted - unescaped '&', '<', '>' causes "mismatched tag" error

Issue

• characters such as <,>,&,etc are not being reformatted properly in updateinfo.xml
• yum list-security and yum-updatesd fails with errors

• example of yum error:

  [root@01 ~]# yum list-security
  Loaded plugins: rhnplugin, security
  Traceback (most recent call last):
  File "/usr/bin/yum", line 29, in ?
  yummain.user_main(sys.argv[1:], exit_code=True)
  File "/usr/share/yum-cli/yummain.py", line 309, in user_main
  errcode = main(args)
  File "/usr/share/yum-cli/yummain.py", line 178, in main
  result, resultmsgs = base.doCommands()
  File "/usr/share/yum-cli/cli.py", line 349, in doCommands
  return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd, self.extcmds)
  File "/usr/lib/yum-plugins/security.py", line 203, in doCommand
  md_info = ysp_gen_metadata(self.repos.listEnabled())
  File "/usr/lib/yum-plugins/security.py", line 76, in ysp_gen_metadata
  md_info.add(repo)
  File "/usr/lib/python2.4/site-packages/yum/update_md.py", line 376, in add
  for event, elem in iterparse(infile):
  File "<string>", line 64, in __iter__
  SyntaxError: mismatched tag: line 240, column 1388