simon-svn: putty: simon

[Commits to Tartarus CVS repository.]

SVN root:       svn://svn.tartarus.org/sgt
Changes by:     simon
Revision:       10123
Date:           2014-01-25 15:59:04 +0000 (Sat, 25 Jan 2014)

Log message (10 lines):
Fix a potential crash in ssh_setup_portfwd.

If we search for a colon by computing ptr + host_strcspn(ptr,":"),
then the resulting pointer is always non-NULL, and the 'not found'
condition is not !p but !*p.

This typo could have caused PuTTY to overrun a string, but not in a
security-bug sense because any such string would have to have been
loaded from the configuration rather than received from a hostile
source.

Modified files:
U   putty/ssh.c

Links:
http://svn.tartarus.org/sgt/?rev=10123&view=rev
http://svn.tartarus.org/sgt/putty/ssh.c?rev=10123&r1=10122&r2=10123