IT40613: XMLNSC PARSER CAN CRASH WHEN AN ELEMENT FAILS TO MATCH A PATTERNCONSTRAINT NESTED IN A COMPLEX TYPE

APAR status

• Closed as program error.

Error description

• When the XMLNSC parser validates an element which satisfies a
  pattern constraint and that element forms part of a complex type
  then the parser may trigger an abend if the pattern is not
  satisfied.
  
  The stack trace for the abend is
  
  
  IDCContext_copyFValue from server/xlxpc/lib/libBIPNVBRT.so.11
  IDCContext_endIDCStateHistoryContext from
  server/xlxpc/lib/libBIPNVBRT.so.11
  ?? from server/xlxpc/lib/libBIPNVBRT.so.11
  Instructions_dispatch from server/xlxpc/lib/libBIPNVBRT.so.11
  VMContext_handleEndElementEvent from
  server/xlxpc/lib/libBIPNVBRT.so.11
  VMScannerEventQueue_produceEndElementEvent from
  server/xlxpc/lib/libBIPNVBRT.so.11
  ?? from server/xlxpc/lib/libBIPNVBRT.so.11
  ?? from server/xlxpc/lib/libBIPNVBRT.so.11
  xlxpc::XLXPCParser::parseAll() from
  server/xlxpc/lib/libBIPNVBRT.so.11
  ImbXMLNSCDocHandler::parseAll() from
  server/lib/libGenXmlParser4.so
  

Local fix

• Disable validation when using the XMLNSC parser.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of the XMLNSC parser with validation enabled in IBM
  App Connect Enterprise.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  When the XMLNSC parser validates an element which satisfies a
  pattern constraint and that element forms part of a complex type
  then the parser may trigger an abend if the pattern is not
  satisfied.
  
  The stack trace for the abend is
  
  IDCContext_copyFValue from server/xlxpc/lib/libBIPNVBRT.so.11
  IDCContext_endIDCStateHistoryContext from
  server/xlxpc/lib/libBIPNVBRT.so.11
  ?? from server/xlxpc/lib/libBIPNVBRT.so.11
  Instructions_dispatch from server/xlxpc/lib/libBIPNVBRT.so.11
  VMContext_handleEndElementEvent from
  server/xlxpc/lib/libBIPNVBRT.so.11
  VMScannerEventQueue_produceEndElementEvent from
  server/xlxpc/lib/libBIPNVBRT.so.11
  ?? from server/xlxpc/lib/libBIPNVBRT.so.11
  ?? from server/xlxpc/lib/libBIPNVBRT.so.11
  xlxpc::XLXPCParser::parseAll() from
  server/xlxpc/lib/libBIPNVBRT.so.11
  ImbXMLNSCDocHandler::parseAll() from
  server/lib/libGenXmlParser4.so
  

Problem conclusion

• The abend no longer occurs.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v11.0      11.0.0.20
  v12.0      12.0.7.0
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  APP CONNECT ENT

• Fixed component ID

  5724J0550

Applicable component levels