Shoot, no patch for the 1.2.x series? That's disappointing. It's not that old, is it? I feel like I upgraded to 1.2.x, which was then the newest stable branch, just over a year ago.
As I know, 1.2.x actually is obsoleted since May 2013, and there is no more support or bugfixes after this date.
You can either use the Phusion Passenger one: https://www.phusionpassenger.com/install_debian
Or the Nginx.org one: http://nginx.org/en/linux_packages.html
Both support Debian 6 and 7, and both supply the latest Nginx stable version.