This release contains fixes for two security issues that just came to my attention over the past 24 hours, which affect OpenVPN 2.0, 2.0.1, 2.0.2, and the 2.1 beta series. OpenVPN 1.x is not affected.
Individual patches are available here: http://openvpn.net/patch/2.0.4-security-patches Change Log: * 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 (Credit: Vade79). CVE-2005-3393 * 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. CVE-2005-3409 * Fix attempt of assertion at multi.c:1586 (note that this precise line number will vary across different versions of OpenVPN). * Added ".PHONY: plugin" to Makefile.am to work around "make dist" issue. * Fixed double fork issue that occurs when --management-hold is used. * Moved TUN/TAP read/write log messages from --verb 8 to 6. * Warn when multiple clients having the same common name or username usurp each other when --duplicate-cn is not used. * Modified Windows and Linux versions of get_default_gateway to return the route with the smallest metric if multiple 0.0.0.0/0.0.0.0 entries are present. James