Debian Security Advisory DSA 2663-1 (tinc - stack based buffer overflow)

# OpenVAS Vulnerability Test
# $Id: deb_2663.nasl 6611 2017-07-07 12:07:20Z cfischer $
# Auto-generated from advisory DSA 2663-1 using nvtgen 1.0
# Script version: 1.0
#
# Author:
# Greenbone Networks
#
# Copyright:
# Copyright (c) 2013 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.
#

include("revisions-lib.inc");

tag_affected  = "tinc on Debian Linux";
tag_insight   = "tinc is a daemon with which you can create a virtual private network
(VPN). One daemon can handle multiple connections, so you can
create an entire (moderately sized) VPN with only one daemon per
participating computer.";
tag_solution  = "For the stable distribution (squeeze), this problem has been fixed in
version 1.0.13-1+squeeze1.

For the testing distribution (wheezy), this problem has been fixed in
version 1.0.19-3.

For the unstable distribution (sid), this problem has been fixed in
version 1.0.19-3.

We recommend that you upgrade your tinc packages.";
tag_summary   = "Martin Schobert discovered a stack-based vulnerability in tinc, a
Virtual Private Network (VPN) daemon.

When packets are forwarded via TCP, packet length is not checked against
the stack buffer length. Authenticated peers could use this to crash the
tinc daemon and maybe execute arbitrary code.

Note that on Wheezy and Sid, tinc is built using hardening flags and
especially stack smashing protection, which should help protect against
arbitrary code execution.";
tag_vuldetect = "This check tests the installed software version using the apt package manager.";

if(description)
{
    script_id(892663);
    script_version("$Revision: 6611 $");
    script_cve_id("CVE-2013-1428");
    script_name("Debian Security Advisory DSA 2663-1 (tinc - stack based buffer overflow)");
    script_tag(name: "last_modification", value:"$Date: 2017-07-07 14:07:20 +0200 (Fri, 07 Jul 2017) $");
    script_tag(name: "creation_date", value:"2013-04-22 00:00:00 +0200 (Mon, 22 Apr 2013)");
    script_tag(name: "cvss_base", value:"6.5");
    script_tag(name: "cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");

    script_xref(name: "URL", value: "http://www.debian.org/security/2013/dsa-2663.html");


    script_category(ACT_GATHER_INFO);

    script_copyright("Copyright (c) 2013 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: tag_affected);
    script_tag(name: "insight",   value: tag_insight);
#    script_tag(name: "impact",    value: tag_impact);
    script_tag(name: "solution",  value: tag_solution);
    script_tag(name: "summary",   value: tag_summary);
    script_tag(name: "vuldetect", value: tag_vuldetect);
    script_tag(name:"qod_type", value:"package");
    script_tag(name:"solution_type", value:"VendorFix");

    exit(0);
}

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

res = "";
report = "";
if ((res = isdpkgvuln(pkg:"tinc", ver:"1.0.13-1+squeeze1", rls:"DEB6.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"tinc", ver:"1.0.19-3", rls:"DEB7.0")) != NULL) {
    report += res;
}

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