| <?xml version="1.0" encoding="utf-8"?> |
| <!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd"> |
| |
| <glsa id="200511-07"> |
| <title>OpenVPN: Multiple vulnerabilities</title> |
| <synopsis> |
| The OpenVPN client is potentially vulnerable to the execution of arbitrary |
| code and the OpenVPN server is vulnerable to a Denial of Service issue. |
| </synopsis> |
| <product type="ebuild">OpenVPN</product> |
| <announced>November 06, 2005</announced> |
| <revised>November 06, 2005: 01</revised> |
| <bug>111116</bug> |
| <access>remote</access> |
| <affected> |
| <package name="net-misc/openvpn" auto="yes" arch="*"> |
| <unaffected range="ge">2.0.4</unaffected> |
| <vulnerable range="lt">2.0.4</vulnerable> |
| </package> |
| </affected> |
| <background> |
| <p> |
| OpenVPN is a multi-platform, full-featured SSL VPN solution. |
| </p> |
| </background> |
| <description> |
| <p> |
| The OpenVPN client contains a format string bug in the handling of |
| the foreign_option in options.c. Furthermore, when the OpenVPN server |
| runs in TCP mode, it may dereference a NULL pointer under specific |
| error conditions. |
| </p> |
| </description> |
| <impact type="normal"> |
| <p> |
| A remote attacker could setup a malicious OpenVPN server and trick |
| the user into connecting to it, potentially executing arbitrary code on |
| the client's computer. A remote attacker could also exploit the NULL |
| dereference issue by sending specific packets to an OpenVPN server |
| running in TCP mode, resulting in a Denial of Service condition. |
| </p> |
| </impact> |
| <workaround> |
| <p> |
| Do not use "pull" or "client" options in the OpenVPN client |
| configuration file, and use UDP mode for the OpenVPN server. |
| </p> |
| </workaround> |
| <resolution> |
| <p> |
| All OpenVPN users should upgrade to the latest version: |
| </p> |
| <code> |
| # emerge --sync |
| # emerge --ask --oneshot --verbose ">=net-misc/openvpn-2.0.4"</code> |
| </resolution> |
| <references> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3393">CVE-2005-3393</uri> |
| <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3409">CVE-2005-3409</uri> |
| <uri link="http://openvpn.net/changelog.html">OpenVPN changelog</uri> |
| </references> |
| <metadata tag="requester" timestamp="Wed, 02 Nov 2005 12:34:18 +0000"> |
| koon |
| </metadata> |
| <metadata tag="submitter" timestamp="Fri, 04 Nov 2005 13:01:51 +0000"> |
| koon |
| </metadata> |
| <metadata tag="bugReady" timestamp="Sun, 06 Nov 2005 14:23:34 +0000"> |
| koon |
| </metadata> |
| </glsa> |