Debian Security Advisory DSA 2861-1 (file - denial of service)

2014-02-16T00:00:00
ID OPENVAS:702861
Type openvas
Reporter Copyright (c) 2014 Greenbone Networks GmbH http://greenbone.net
Modified 2017-07-20T00:00:00

Description

It was discovered that file, a file type classification tool, contains a flaw in the handling of indirect magic rules in the libmagic library, which leads to an infinite recursion when trying to determine the file type of certain files. The Common Vulnerabilities and Exposures project ID CVE-2014-1943 has been assigned to identify this flaw. Additionally, other well-crafted files might result in long computation times (while using 100% CPU) and overlong results.

                                        
                                            # OpenVAS Vulnerability Test
# $Id: deb_2861.nasl 6769 2017-07-20 09:56:33Z teissa $
# Auto-generated from advisory DSA 2861-1 using nvtgen 1.0
# Script version: 1.0
#
# Author:
# Greenbone Networks
#
# Copyright:
# Copyright (c) 2014 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.
#

tag_affected  = "file on Debian Linux";
tag_insight   = "File tests each argument in an attempt to classify it. There are three sets of
tests, performed in this order: filesystem tests, magic number tests, and
language tests. The first test that succeeds causes the file type to be
printed.";
tag_solution  = "For the oldstable distribution (squeeze), this problem has been fixed in
version 5.04-5+squeeze3.

For the stable distribution (wheezy), this problem has been fixed in
version 5.11-2+deb7u1.

For the unstable distribution (sid), this problem will be fixed soon.

We recommend that you upgrade your file packages.";
tag_summary   = "It was discovered that file, a file type classification tool, contains a
flaw in the handling of indirect magic rules in the libmagic library,
which leads to an infinite recursion when trying to determine the file
type of certain files. The Common Vulnerabilities and Exposures project
ID CVE-2014-1943 
has been assigned to identify this flaw. Additionally,
other well-crafted files might result in long computation times (while
using 100% CPU) and overlong results.";
tag_vuldetect = "This check tests the installed software version using the apt package manager.";

if(description)
{
    script_id(702861);
    script_version("$Revision: 6769 $");
    script_cve_id("CVE-2014-1943");
    script_name("Debian Security Advisory DSA 2861-1 (file - denial of service)");
    script_tag(name: "last_modification", value:"$Date: 2017-07-20 11:56:33 +0200 (Thu, 20 Jul 2017) $");
    script_tag(name: "creation_date", value:"2014-02-16 00:00:00 +0100 (Sun, 16 Feb 2014)");
    script_tag(name:"cvss_base", value:"5.0");
    script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");

    script_xref(name: "URL", value: "http://www.debian.org/security/2014/dsa-2861.html");


    script_category(ACT_GATHER_INFO);

    script_copyright("Copyright (c) 2014 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("revisions-lib.inc");
include("pkg-lib-deb.inc");

res = "";
report = "";
if ((res = isdpkgvuln(pkg:"file", ver:"5.04-5+squeeze3", rls:"DEB6.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libmagic-dev", ver:"5.04-5+squeeze3", rls:"DEB6.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libmagic1", ver:"5.04-5+squeeze3", rls:"DEB6.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"python-magic", ver:"5.04-5+squeeze3", rls:"DEB6.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"python-magic-dbg", ver:"5.04-5+squeeze3", rls:"DEB6.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"file", ver:"5.11-2+deb7u1", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libmagic-dev", ver:"5.11-2+deb7u1", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libmagic1", ver:"5.11-2+deb7u1", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"python-magic", ver:"5.11-2+deb7u1", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"python-magic-dbg", ver:"5.11-2+deb7u1", rls:"DEB7.0")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"file", ver:"5.11-2+deb7u1", rls:"DEB7.1")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libmagic-dev", ver:"5.11-2+deb7u1", rls:"DEB7.1")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libmagic1", ver:"5.11-2+deb7u1", rls:"DEB7.1")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"python-magic", ver:"5.11-2+deb7u1", rls:"DEB7.1")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"python-magic-dbg", ver:"5.11-2+deb7u1", rls:"DEB7.1")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"file", ver:"5.11-2+deb7u1", rls:"DEB7.2")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libmagic-dev", ver:"5.11-2+deb7u1", rls:"DEB7.2")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libmagic1", ver:"5.11-2+deb7u1", rls:"DEB7.2")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"python-magic", ver:"5.11-2+deb7u1", rls:"DEB7.2")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"python-magic-dbg", ver:"5.11-2+deb7u1", rls:"DEB7.2")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"file", ver:"5.11-2+deb7u1", rls:"DEB7.3")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libmagic-dev", ver:"5.11-2+deb7u1", rls:"DEB7.3")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"libmagic1", ver:"5.11-2+deb7u1", rls:"DEB7.3")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"python-magic", ver:"5.11-2+deb7u1", rls:"DEB7.3")) != NULL) {
    report += res;
}
if ((res = isdpkgvuln(pkg:"python-magic-dbg", ver:"5.11-2+deb7u1", rls:"DEB7.3")) != NULL) {
    report += res;
}

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