Debian Security Advisory DSA 2802-1 (nginx - restriction bypass)

2013-11-21T00:00:00
ID OPENVAS:892802
Type openvas
Reporter Copyright (c) 2013 Greenbone Networks GmbH http://greenbone.net
Modified 2017-07-07T00:00:00

Description

Ivan Fratric of the Google Security Team discovered a bug in nginx, a web server, which might allow an attacker to bypass security restrictions by using a specially crafted request.

The oldstable distribution (squeeze) is not affected by this problem.

                                        
                                            # OpenVAS Vulnerability Test
# $Id: deb_2802.nasl 6611 2017-07-07 12:07:20Z cfischer $
# Auto-generated from advisory DSA 2802-1 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  = "nginx on Debian Linux";
tag_insight   = "Nginx ('engine X') is a high-performance web and reverse proxy server
created by Igor Sysoev. It can be used both as a standalone web server
and as a proxy to reduce the load on back-end HTTP or mail servers.";
tag_solution  = "For the stable distribution (wheezy), this problem has been fixed in
version 1.2.1-2.2+wheezy2.

For the unstable distribution (sid), this problem has been fixed in
version 1.4.4-1.

We recommend that you upgrade your nginx packages.";
tag_summary   = "Ivan Fratric of the Google Security Team discovered a bug in nginx,
a web server, which might allow an attacker to bypass security
restrictions by using a specially crafted request.

The oldstable distribution (squeeze) is not affected by this problem.";
tag_vuldetect = "This check tests the installed software version using the apt package manager.";

if(description)
{
    script_id(892802);
    script_version("$Revision: 6611 $");
    script_cve_id("CVE-2013-4547");
    script_name("Debian Security Advisory DSA 2802-1 (nginx - restriction bypass)");
    script_tag(name: "last_modification", value:"$Date: 2017-07-07 14:07:20 +0200 (Fri, 07 Jul 2017) $");
    script_tag(name: "creation_date", value:"2013-11-21 00:00:00 +0100 (Thu, 21 Nov 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-2802.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:"nginx", ver:"1.2.1-2.2+wheezy2", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"nginx-common", ver:"1.2.1-2.2+wheezy2", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"nginx-doc", ver:"1.2.1-2.2+wheezy2", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"nginx-extras", ver:"1.2.1-2.2+wheezy2", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"nginx-extras-dbg", ver:"1.2.1-2.2+wheezy2", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"nginx-full", ver:"1.2.1-2.2+wheezy2", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"nginx-full-dbg", ver:"1.2.1-2.2+wheezy2", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"nginx-light", ver:"1.2.1-2.2+wheezy2", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"nginx-light-dbg", ver:"1.2.1-2.2+wheezy2", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"nginx-naxsi", ver:"1.2.1-2.2+wheezy2", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"nginx-naxsi-dbg", ver:"1.2.1-2.2+wheezy2", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"nginx-naxsi-ui", ver:"1.2.1-2.2+wheezy2", rls:"DEB7.0")) != NULL) {
    report += res;
}

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