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2010.08.09 -- Version 2.1.2* Windows security issue: Fixed potential local privilege escalation vulnerability in Windows service. The Windows service did not properly quote the executable filename passed to CreateService. A local attacker with write access to the root directory C:\ could create an executable that would be run with the same privilege level as the OpenVPN Windows service. However, since non-Administrative users normally lack write permission on C:\, this vulnerability is generally not exploitable except on older versions of Windows (such as Win2K) where the default permissions on C:\ would allow any user to create files there. Credit: Scott Laurie, MWR InfoSecurity* Added Python-based based alternative build system for Windows using Visual Studio 2008 (in win directory).* When aborting in a non-graceful way, try to execute do_close_tun in init.c prior to daemon exit to ensure that the tun/tap interface is closed and any added routes are deleted.* Fixed an issue where AUTH_FAILED was not being properly delivered to the client when a bad password is given for mid-session reauth, causing the connection to fail without an error indication.* Don't advance to the next connection profile on AUTH_FAILED errors.* Fixed an issue in the Management Interface that could cause a process hang with 100% CPU utilization in --management-client mode if the management interface client disconnected at the point where credentials are queried.* Fixed an issue where if reneg-sec was set to 0 on the client, so that the server-side value would take precedence, the auth_deferred_expire_window function would incorrectly return a window period of 0 seconds. In this case, the correct window period should be the handshake window period.* Modified ">PASSWORD:Verification Failed" management interface notification to include a client reason string: >PASSWORD:Verification Failed: 'AUTH_TYPE' ['REASON_STRING']* Enable exponential backoff in reliability layer retransmits.* Set socket buffers (SO_SNDBUF and SO_RCVBUF) immediately after socket is created rather than waiting until after connect/listen.* Management interface performance optimizations: 1. Added env-filter MI command to perform filtering on env vars passed through as a part of --management-client-auth 2. man_write will now try to aggregate output into larger blocks (up to 1024 bytes) for more efficient i/o* Fixed minor issue in Windows TAP driver DEBUG builds where non-null-terminated unicode strings were being printed incorrectly.* Fixed issue on Windows with MSVC compiler, where TCP_NODELAY support was not being compiled in.* Proxy improvements: Improved the ability of http-auth "auto" flag to dynamically detect the auth method required by the proxy. Added http-auth "auto-nct" flag to reject weak proxy auth methods. Added HTTP proxy digest authentication method. Removed extraneous openvpn_sleep calls from proxy.c.* Implemented http-proxy-override and http-proxy-fallback directives to make it easier for OpenVPN client UIs to start a pre-existing client config file with proxy options, or to adaptively fall back to a proxy connection if a direct connection fails.* Implemented a key/value auth channel from client to server.* Fixed issue where bad creds provided by the management interface for HTTP Proxy Basic Authentication would go into an infinite retry-fail loop instead of requerying the management interface for new creds.* Added support for MSVC debugging of openvpn.exe in settings.in: # Build debugging version of openvpn.exe !define PRODUCT_OPENVPN_DEBUG* Implemented multi-address DNS expansion on the network field of route commands. When only a single IP address is desired from a multi-address DNS expansion, use the first address rather than a random selection.* Added --register-dns option for Windows. Fixed some issues on Windows with --log, subprocess creation for command execution, and stdout/stderr redirection.* Fixed an issue where application payload transmissions on the TLS control channel (such as AUTH_FAILED) that occur during or immediately after a TLS renegotiation might be dropped. * Added warning about tls-remote option in man page.
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Thema: SSH/SSL/VPN Tools... (Gelesen 104606 mal)
