Debian Security Advisory DSA 3282-1 (strongswan - security update)

# OpenVAS Vulnerability Test
# $Id: deb_3282.nasl 6609 2017-07-07 12:05:59Z cfischer $
# Auto-generated from advisory DSA 3282-1 using nvtgen 1.0
# Script version: 1.0
#
# Author:
# Greenbone Networks
#
# Copyright:
# Copyright (c) 2015 Greenbone Networks GmbH http://greenbone.net
# Text descriptions are largely excerpted from the referenced
# advisory, and are Copyright (c) the respective author(s)
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
#


if(description)
{
    script_id(703282);
    script_version("$Revision: 6609 $");
    script_cve_id("CVE-2015-4171");
    script_name("Debian Security Advisory DSA 3282-1 (strongswan - security update)");
    script_tag(name: "last_modification", value: "$Date: 2017-07-07 14:05:59 +0200 (Fri, 07 Jul 2017) $");
    script_tag(name: "creation_date", value: "2015-06-08 00:00:00 +0200 (Mon, 08 Jun 2015)");
    script_tag(name:"cvss_base", value:"2.6");
    script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/Au:N/C:P/I:N/A:N");
    script_tag(name: "solution_type", value: "VendorFix");
    script_tag(name: "qod_type", value: "package");

    script_xref(name: "URL", value: "http://www.debian.org/security/2015/dsa-3282.html");


    script_category(ACT_GATHER_INFO);

    script_copyright("Copyright (c) 2015 Greenbone Networks GmbH http://greenbone.net");
    script_family("Debian Local Security Checks");
    script_dependencies("gather-package-list.nasl");
    script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages");
    script_tag(name: "affected",  value: "strongswan on Debian Linux");
    script_tag(name: "insight",   value: "The strongSwan VPN suite is based on
the IPsec stack in standard Linux 2.6 kernels. It supports both the IKEv1 and
IKEv2 protocols.");
    script_tag(name: "solution",  value: "For the oldstable distribution (wheezy),
this problem has been fixed in version 4.5.2-1.5+deb7u7.

For the stable distribution (jessie), this problem has been fixed in
version 5.2.1-6+deb8u1.

For the testing distribution (stretch), this problem has been fixed
in version 5.3.1-1.

For the unstable distribution (sid), this problem has been fixed in
version 5.3.1-1.

We recommend that you upgrade your strongswan packages.");
    script_tag(name: "summary",   value: "Alexander E. Patrakov discovered an
issue in strongSwan, an IKE/IPsec suite used to establish IPsec protected links.

When an IKEv2 client authenticates the server with certificates and the
client authenticates itself to the server using pre-shared key or EAP,
the constraints on the server certificate are only enforced by the
client after all authentication steps are completed successfully. A
rogue server which can authenticate using a valid certificate issued by
any CA trusted by the client could trick the user into continuing the
authentication, revealing the username and password digest (for EAP) or
even the cleartext password (if EAP-GTC is accepted).");
    script_tag(name: "vuldetect", value: "This check tests the installed software
version using the apt package manager.");
    exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-deb.inc");

res = "";
report = "";
if ((res = isdpkgvuln(pkg:"libstrongswan", ver:"4.5.2-1.5+deb7u7", rls_regex:"DEB7.[0-9]")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"strongswan", ver:"4.5.2-1.5+deb7u7", rls_regex:"DEB7.[0-9]")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"strongswan-dbg", ver:"4.5.2-1.5+deb7u7", rls_regex:"DEB7.[0-9]")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"strongswan-ikev1", ver:"4.5.2-1.5+deb7u7", rls_regex:"DEB7.[0-9]")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"strongswan-ikev2", ver:"4.5.2-1.5+deb7u7", rls_regex:"DEB7.[0-9]")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"strongswan-nm", ver:"4.5.2-1.5+deb7u7", rls_regex:"DEB7.[0-9]")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"strongswan-starter", ver:"4.5.2-1.5+deb7u7", rls_regex:"DEB7.[0-9]")) != NULL) {
    report += res;
}

if (report != "") {
    security_message(data:report);
} else if (__pkg_match) {
    exit(99); # Not vulnerable.
}