Abysssec posted a very interesting paper analyzing the pushstring memory corruption vulnerability (CVE-2010-2201).

Read the paper at http://www.exploit-db.com/download_pdf/14983. Original Adobe advisory at http://www.adobe.com/support/security/bulletins/apsb10-15.html 

-- Manuel Humberto Santander Peláez | http://twitter.com/manuelsantander | http://manuel.santander.name | msantand at isc dot sans dot org