The heartbleed openssl fix is already commited to openwrt packages, but, as far as I know, nobody has released a binary version, so all routers using openwrt and openssl are probably affected and it is very hard to fix them. To patch it, right now, it does not exist any other way but to compile openssl packages by yourself.
I have compiled openssl packages for openwrt attitude adjustment using original svn source. To save you some time, here you have the ipk files:
With this binary files, you can do a manual install, just copy the files to your router (using scp for example) and then run:
- opkg install <pkg_name>
from router shell.