#alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT PDF Name Representation Obfuscation of URL"; flow:established,to_client; content:"obj"; content:"<<"; within:4; content:"/"; within:50; content:!"URL"; within:3; content:"#"; within:7; pcre:"/\x3C\x3C[^>]*\x2F[^URL](U|#55)(R|#52)(L|#4C)/smi"; reference:url,blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/; classtype:bad-unknown; sid:2011533; rev:4; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, deployment Perimeter, tag Web_Client_Attacks, signature_severity Major, created_at 2010_09_27, updated_at 2016_07_01;)

Added 2017-08-07 21:04:40 UTC


#alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT PDF Name Representation Obfuscation of URL"; flow:established,to_client; content:"obj"; content:"<<"; within:4; content:"/"; within:50; content:!"URL"; within:3; content:"#"; within:7; pcre:"/\x3C\x3C[^>]*\x2F[^URL](U|#55)(R|#52)(L|#4C)/smi"; reference:url,blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/; classtype:bad-unknown; sid:2011533; rev:3;)

Added 2011-12-09 18:10:15 UTC


alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT PDF Name Representation Obfuscation of URL"; flow:established,to_client; content:"obj"; content:"<<"; within:4; content:"/"; within:50; content:!"URL"; within:3; content:"#"; within:7; pcre:"/\x3C\x3C[^>]*\x2F[^URL](U|#55)(R|#52)(L|#4C)/smi"; reference:url,blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/; classtype:bad-unknown; sid:2011533; rev:3;)

Added 2011-10-12 19:32:12 UTC


alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT PDF Name Representation Obfuscation of URL"; flow:established,to_client; content:"obj"; content:"<<"; within:4; content:"/"; within:50; content:!"URL"; within:3; content:"#"; within:7; pcre:"/\x3C\x3C[^>]*\x2F[^URL](U|#55)(R|#52)(L|#4C)/smi"; classtype:bad-unknown; reference:url,blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/; sid:2011533; rev:3;)

Added 2011-06-30 23:31:12 UTC


alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT PDF Name Representation Obfuscation of URL"; flow:established,to_client; content:"PDF-"; depth:300; content:"/"; distance:0; content:!"URL"; within:3; content:"#"; within:7; pcre:"/\x2F[^URL](U|#55)(R|#52)(L|#4C)/i"; classtype:bad-unknown; reference:url,blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/; sid:2011533; rev:2;)

Added 2011-02-04 17:31:21 UTC


alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET WEB_CLIENT PDF Name Representation Obfuscation of URL"; flow:established,to_client; content:"PDF-"; depth:300; content:"/"; distance:0; content:!"URL"; within:3; content:"#"; within:7; pcre:"/\x2F(U|#55)(R|#52)(L|#4C)/i"; classtype:bad-unknown; reference:url,blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/; reference:url,doc.emergingthreats.net/2011533; reference:url,www.emergingthreats.net/cgi-bin/cvsweb.cgi/sigs/WEB_CLIENT/WEB_Adobe; sid:2011533; rev:2;)

Added 2010-09-22 11:26:16 UTC


Topic revision: r1 - 2017-08-08 - TWikiGuest
 
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