Red Hat Bugzilla – Bug 457667
CVE-2008-3459 openvpn: client command execution through remotely received configuration directives
Last modified: 2010-03-29 05:42:03 EDT
OpenVPN upstream released new version 2.1_rc9 fixing security issue in non-Windows builds of OpenVPN client:
* Security Fix -- affects non-Windows OpenVPN clients running
OpenVPN 2.1-beta14 through 2.1-rc8 (OpenVPN 2.0.x clients are NOT
vulnerable nor are any versions of the OpenVPN server vulnerable).
An OpenVPN client connecting to a malicious or compromised
server could potentially receive an "lladdr" or "iproute" configuration
directive from the server which could cause arbitrary code execution on
the client. A successful attack requires 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
succesfully authenticates the server, (c) the server is malicious or has
been compromised and is under the control of the attacker, and (d) the
client is running a non-Windows OS. Credit: David Wagner.
I've revoked the request to push this to stable. This version is somewhat broken.
CVE id CVE-2008-3459 was assigned to this issue:
Unspecified vulnerability in OpenVPN 2.1-beta14 through 2.1-rc8, when
running on non-Windows systems, allows remote servers to execute
arbitrary commands via crafted (1) "lladdr" and (2) "iproute"
configuration directives, probably related to shell metacharacters.
openvpn-2.1-0.29.rc15.fc9 has been submitted as an update for Fedora 9.
openvpn-2.1-0.29.rc15.fc8 has been submitted as an update for Fedora 8.
openvpn-2.1-0.29.rc15.fc8 has been pushed to the Fedora 8 stable repository. If problems still persist, please make note of it in this bug report.
openvpn-2.1-0.29.rc15.fc9 has been pushed to the Fedora 9 stable repository. If problems still persist, please make note of it in this bug report.