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Test ID:1.3.6.1.4.1.25623.1.0.851572
Category:SuSE Local Security Checks
Title:openSUSE: Security Advisory for openvpn (openSUSE-SU-2017:1680-1)
Summary:The remote host is missing an update for the 'openvpn'; package(s) announced via the referenced advisory.
Description:Summary:
The remote host is missing an update for the 'openvpn'
package(s) announced via the referenced advisory.

Vulnerability Insight:
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.

Affected Software/OS:
openvpn on openSUSE Leap 42.2

Solution:
Please install the updated package(s).

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2017-7508
BugTraq ID: 99230
http://www.securityfocus.com/bid/99230
Debian Security Information: DSA-3900 (Google Search)
http://www.debian.org/security/2017/dsa-3900
http://www.securitytracker.com/id/1038768
Common Vulnerability Exposure (CVE) ID: CVE-2017-7520
Common Vulnerability Exposure (CVE) ID: CVE-2017-7521
CopyrightCopyright (C) 2017 Greenbone Networks GmbH

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