Created attachment 1618 [details]
Change made to line 1123 of serverloop.c

In 5.2p1 only root can login using remote forwarding with port 0 and get a port dynamically assigned. Non root users get an error like this:

debug1: Remote: Server has disabled port forwarding.
debug1: remote forward failure for: listen 0, connect localhost:8080
Warning: remote port forwarding failed for listen port 0
debug1: All remote forwarding requests processed

when running:
ssh -v -R 0:localhost:8080 -N gavin@xxxxx.com

whereas the port is dynamically assigned as expected when the user is root
ssh -v -R 0:localhost:8080 -N root@xxxxx.com

debug1: remote forward success for: listen 0, connect localhost:80
Allocated port 49189 for remote forward to localhost:80
debug1: All remote forwarding requests processed


I fixed this in line 1123 serverloop.c. Hopefully this doesn't break something important.

Gavin