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@@ -5,6 +5,25 @@ $Id$
2005.10.xx -- Version 2.1-beta5
+* Security fix -- Affects non-Windows OpenVPN clients of
+ version 2.0 or higher which connect to a malicious or
+ compromised server. A format string vulnerability
+ in the foreign_option function in options.c could
+ potentially allow a malicious or compromised server
+ to execute arbitrary code on the client. Only
+ non-Windows clients are affected. The vulnerability
+ only exists if (a) the client's TLS negotiation with
+ the server succeeds, (b) the server is malicious or
+ has been compromised such that it is configured to
+ push a maliciously crafted options string to the client,
+ and (c) the client indicates its willingness to accept
+ pushed options from the server by having "pull" or
+ "client" in its configuration file.
+* Security fix -- Potential DoS vulnerability on the
+ server in TCP mode. If the TCP server accept() call
+ returns an error status, the resulting exception handler
+ may attempt to indirect through a NULL pointer, causing
+ a segfault. Affects all OpenVPN 2.0 versions.
* Fix attempt of assertion at multi.c:1586 (note that
this precise line number will vary across different
versions of OpenVPN).