Security update for openvpn SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2017:1680-1 Final 1 1 2017-06-26T08:50:35Z current 2017-06-26T08:50:35Z 2017-06-26T08:50:35Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for openvpn This update for openvpn fixes the following issues: - Some parts of the certificate-parsing code did not always clear all allocated memory. This would have allowed clients to leak a few bytes of memory for each connection attempt, thereby facilitating a (quite inefficient) DoS attack on the server. [bsc#1044947, CVE-2017-7521] - The ASN1 parsing code contained a bug that could have resulted in some buffers being free()d twice, and this issue could have potentially been triggered remotely by a VPN peer. [bsc#1044947, CVE-2017-7521] - If clients used a HTTP proxy with NTLM authentication, a man-in-the-middle attacker between client and proxy could cause the client to crash or disclose at most 96 bytes of stack memory. The disclosed stack memory was likely to contain the proxy password. If the proxy password had not been reused, this was unlikely to compromise the security of the OpenVPN tunnel itself. Clients who did not use the --http-proxy option with ntlm2 authentication were not affected. [bsc#1044947, CVE-2017-7520] - It was possible to trigger an assertion by sending a malformed IPv6 packet. That issue could have been abused to remotely shutdown an openvpn server or client, if IPv6 and --mssfix were enabled and if the IPv6 networks used inside the VPN were known. [bsc#1044947, CVE-2017-7508] This update was imported from the SUSE:SLE-12:Update update project. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://lists.opensuse.org/opensuse-security-announce/2017-06/msg00031.html E-Mail link for openSUSE-SU-2017:1680-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings openSUSE Leap 42.2 openvpn-2.3.8-8.10.1 openvpn-auth-pam-plugin-2.3.8-8.10.1 openvpn-devel-2.3.8-8.10.1 openvpn-down-root-plugin-2.3.8-8.10.1 openvpn-2.3.8-8.10.1 as a component of openSUSE Leap 42.2 openvpn-auth-pam-plugin-2.3.8-8.10.1 as a component of openSUSE Leap 42.2 openvpn-devel-2.3.8-8.10.1 as a component of openSUSE Leap 42.2 openvpn-down-root-plugin-2.3.8-8.10.1 as a component of openSUSE Leap 42.2 OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service when receiving malformed IPv6 packet. CVE-2017-7508 openSUSE Leap 42.2:openvpn-2.3.8-8.10.1 openSUSE Leap 42.2:openvpn-auth-pam-plugin-2.3.8-8.10.1 openSUSE Leap 42.2:openvpn-devel-2.3.8-8.10.1 openSUSE Leap 42.2:openvpn-down-root-plugin-2.3.8-8.10.1 important 5.4 AV:N/AC:H/Au:N/C:N/I:N/A:C Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-06/msg00031.html https://www.suse.com/security/cve/CVE-2017-7508.html CVE-2017-7508 https://bugzilla.suse.com/1044947 SUSE Bug 1044947 OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service and/or possibly sensitive memory leak triggered by man-in-the-middle attacker. CVE-2017-7520 openSUSE Leap 42.2:openvpn-2.3.8-8.10.1 openSUSE Leap 42.2:openvpn-auth-pam-plugin-2.3.8-8.10.1 openSUSE Leap 42.2:openvpn-devel-2.3.8-8.10.1 openSUSE Leap 42.2:openvpn-down-root-plugin-2.3.8-8.10.1 important 7.8 AV:N/AC:M/Au:N/C:P/I:N/A:C Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-06/msg00031.html https://www.suse.com/security/cve/CVE-2017-7520.html CVE-2017-7520 https://bugzilla.suse.com/1044947 SUSE Bug 1044947 OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension(). CVE-2017-7521 openSUSE Leap 42.2:openvpn-2.3.8-8.10.1 openSUSE Leap 42.2:openvpn-auth-pam-plugin-2.3.8-8.10.1 openSUSE Leap 42.2:openvpn-devel-2.3.8-8.10.1 openSUSE Leap 42.2:openvpn-down-root-plugin-2.3.8-8.10.1 important 7.1 AV:N/AC:M/Au:N/C:N/I:N/A:C Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-06/msg00031.html https://www.suse.com/security/cve/CVE-2017-7521.html CVE-2017-7521 https://bugzilla.suse.com/1044947 SUSE Bug 1044947