malicious or compromised server could potentially receive
"setenv" configuration directives from the server which could
cause arbitrary code execution on the client via a LD_PRELOAD
attack. A successful attack appears to require that (a) the
client has agreed to allow the server to push configuration
directives to it by including "pull" or the macro "client" in
its configuration file, (b) the client configuration file uses
a scripting directive such as "up" or "down", (c) the client
succesfully authenticates the server, (d) the server is
malicious or has been compromised and is under the control of
the attacker, and (e) the attacker has at least some level of
pre-existing control over files on the client (this might be
accomplished by having the server respond to a client web request
with a specially crafted file).
The fix is to disallow "setenv" to be pushed to clients from
the server, and to add a new directive "setenv-safe" which is
pushable from the server, but which appends "OPENVPN_" to the
name of each remotely set environmental variable.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@983 e7ae566f-a301-0410-adde-c780ea21d3b5
Allow plugin and push directives to have multiple
parameters specified instead of only 1 quoted
parameter.
Allow plugin and push directives to have multi-line
parameter lists, such as:
<plugin>
my-plugin.so
parm1
parm2
</plugin>
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@785 e7ae566f-a301-0410-adde-c780ea21d3b5
* Added code to make sure that the local PATH environmental
variable points to the Windows system32 directory.
* Added new --ip-win32 adaptive mode which tries 'dynamic'
and then fails over to 'netsh' if the DHCP negotiation fails.
* Made --ip-win32 adaptive the default.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@739 e7ae566f-a301-0410-adde-c780ea21d3b5
get_user_pass.
(1) Allow an additional longer prompt string
to be passed to the management interface
client, in addition to the request type
string.
(2) Allow the management interface client to
return a string, usually "ok" or "cancel"
as the third argument to "needok" command.
(3) Renamed "ok" command in management interface
to "needok".
(4) Edited management-notes.txt to reflect new
needok feature.
(5) See init.c:125 for new code example.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@694 e7ae566f-a301-0410-adde-c780ea21d3b5
