Debian Security Advisory DSA 2659-1 (libapache-mod-security - XML external entity processing vulnerability)

# OpenVAS Vulnerability Test
# $Id: deb_2659.nasl 6611 2017-07-07 12:07:20Z cfischer $
# Auto-generated from advisory DSA 2659-1 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  = "libapache-mod-security on Debian Linux";
tag_insight   = "Mod_security is an Apache module whose purpose is to tighten the Web
application security. Effectively, it is an intrusion detection and prevention
system for the web server.";
tag_solution  = "For the stable distribution (squeeze), this problem has been fixed in
version 2.5.12-1+squeeze2.

For the testing distribution (wheezy), this problem has been fixed in
version 2.6.6-6 of the modsecurity-apache package.

For the unstable distribution (sid), this problem has been fixed in
version 2.6.6-6 of the modsecurity-apache package.

We recommend that you upgrade your libapache-mod-security packages.";
tag_summary   = "Timur Yunusov and Alexey Osipov from Positive Technologies discovered
that the XML files parser of ModSecurity, an Apache module whose purpose
is to tighten the Web application security, is vulnerable to XML
external entities attacks. A specially-crafted XML file provided by a
remote attacker, could lead to local file disclosure or excessive
resources (CPU, memory) consumption when processed.

This update introduces a SecXmlExternalEntity option which is Off 

by default. This will disable the ability of libxml2 to load external
entities.";
tag_vuldetect = "This check tests the installed software version using the apt package manager.";

if(description)
{
    script_id(892659);
    script_version("$Revision: 6611 $");
    script_cve_id("CVE-2013-1915");
    script_name("Debian Security Advisory DSA 2659-1 (libapache-mod-security - XML external entity processing vulnerability)");
    script_tag(name: "last_modification", value:"$Date: 2017-07-07 14:07:20 +0200 (Fri, 07 Jul 2017) $");
    script_tag(name: "creation_date", value:"2013-04-09 00:00:00 +0200 (Tue, 09 Apr 2013)");
    script_tag(name: "cvss_base", value:"7.5");
    script_tag(name: "cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");

    script_xref(name: "URL", value: "http://www.debian.org/security/2013/dsa-2659.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:"libapache-mod-security", ver:"2.5.12-1+squeeze2", rls:"DEB6.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"mod-security-common", ver:"2.5.12-1+squeeze2", rls:"DEB6.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libapache-mod-security", ver:"2.6.6-6", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libapache2-modsecurity", ver:"2.6.6-6", rls:"DEB7.0")) != NULL) {
    report += res;
}

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