###################################################### Application: Foxit Reader PDF Parsing Memory Corruption Platforms: Windows Versions: The vulnerabilities are reported in Foxit Reader and Foxit Enterprise Reader versions 7.1.0.306 and 7.1.3.320 and Foxit Phantom PDF versions 7.1.0.306, 7.1.2.311, and 7.1.3.320. Secunia: SA63346 {PRL}: 2015-05 Author: Francis Provencher (Protek Research Lab’s) Website: http://www.protekresearchlab.com/ Twitter: @ProtekResearch ###################################################### 1) Introduction 2) Report Timeline 3) Technical details 4) POC ###################################################### =============== 1) Introduction =============== Foxit Reader is a multilingual freemium PDF tool that can create, view, edit, digitally sign, and print PDF files.[3] Early versions of Foxit Reader were notable for startup performance and small file size.[citation needed] Foxit has been compared favorably toAdobe Reader.[4][5][6] The Windows version allows annotating and saving unfinished PDF forms, FDF import/export, converting to text, highlighting and drawing. (http://en.wikipedia.org/wiki/Foxit_Reader) ###################################################### ============================ 2) Report Timeline ============================ 2015-04-09: Francis Provencher from Protek Research Lab’s found the issue; 2015-04-13: Foxit Security Response Team confirmed the issue; 2015-04-28: Foxit fixed the issue; ###################################################### ============================ 3) Technical details ============================ A memory corruption occured within the LZW algorithm that is used to decode GIF. A specifically crafted GIF could lead to a controled memory corruption. ###################################################### =========== 4) POC =========== http://protekresearchlab.com/exploits/PRL-2015-05.pdf https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/36859.pdf ######################################################